Digital advertising companies in Connecticut focus on creating strategic campaigns that connect brands with their target audiences. This sector features agencies of various sizes, from boutique firms to larger agencies, that offer services including social media management, SEO, creative content creation, and data analytics. The industry is adapting swiftly to technological advancements, emphasizing the use of data-driven insights to enhance campaign effectiveness. With growing consumer reliance on digital platforms, Connecticut's advertising landscape is poised for continuous growth. Companies are increasingly prioritizing innovative approaches, fostering engagement, and maximizing return on investment for their clients.


This list highlights 21 prominent digital advertising companies based in Connecticut, showcasing a mix of sizes and specializations. Ranging from small teams with unique insights to larger firms delivering comprehensive services, these companies span various fields including healthcare, finance, and technology. Most agencies were founded in the late 20th century and utilize modern digital strategies to provide tailored solutions for their clients. With strong headquarters in cities like Stamford and Glastonbury, this collection represents the vibrant digital marketing scene in the state.


Read on to learn more about the top digital advertising companies in Connecticut.


Top 21 Digital Advertising Companies in Connecticut


1. Cronin

  • Website: cronin-co.com
  • Ownership type: Corporate
  • Headquarters: Glastonbury, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: March 2020
  • Founded year: 1947
  • Headcount: 51-200
  • LinkedIn: cronin-and-company

Cronin, based in Glastonbury, Connecticut, is an advertising agency that has been active since 1947. The company specializes in integrated marketing strategies, offering a comprehensive suite of services that includes marketing analytics, creative content development, public relations, and media management. With a team of approximately 85 employees, Cronin serves clients from various industries, helping them enhance brand visibility and engagement through innovative solutions. Their work spans local, regional, and national campaigns, demonstrating their capability to handle projects of varying scales. Cronin is also part of AMIN Worldwide, a network of independent agencies, which allows them to leverage global resources for media buying and production. Their commitment to understanding consumer behavior and delivering impactful marketing strategies positions them as a relevant player in the digital advertising space.


2. Mason

  • Website: mason23.com
  • Ownership type: Private
  • Headquarters: Bethany, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1951
  • Headcount: 11-50
  • LinkedIn: mason-inc

Mason, Inc., based in Bethany, Connecticut, is an advertising agency founded in 1951. The company specializes in creative marketing solutions, public relations, and digital strategies, serving a range of clients, particularly in the healthcare and entertainment sectors. Mason focuses on enhancing brand visibility and audience engagement through innovative campaigns and strategic planning. Their service offerings include creative campaign development, media strategy, public relations, and social media management. Mason has received recognition for its work, winning multiple awards in the healthcare digital marketing space, which underscores its effectiveness in delivering impactful advertising solutions. The agency operates with a team of 47 employees, all based in the United States, and emphasizes a culture of bold and fearless ideas that challenge conventional marketing approaches.


3. Zero Gravity Marketing


Zero Gravity Marketing is a digital marketing agency based in Madison, Connecticut, founded in 2013. The company specializes in a broad spectrum of marketing solutions, including search engine optimization (SEO), pay-per-click (PPC) advertising, social media marketing, and website design. With a team of approximately 85 professionals, Zero Gravity Marketing collaborates with clients from various sectors such as technology, finance, and nonprofits to enhance their online visibility and engagement. The agency prides itself on creating customized strategies that yield measurable results, demonstrating a commitment to client success. Their portfolio includes notable case studies and testimonials from satisfied clients, reflecting their effectiveness in driving digital marketing initiatives. Zero Gravity Marketing operates without reported funding, indicating a self-sustained business model that focuses on delivering value to its clients.


4. Sublime Communications


Sublime Communications, founded in 2016 and based in Stamford, Connecticut, is a certified woman-owned marketing agency. With a team of 11-50 employees, the agency offers a range of services that include digital marketing, media buying and planning, experiential marketing, creative content development, research and analytics, and public relations. The firm positions itself as an 'un-agency agency,' emphasizing a proactive approach to client engagement. Their work spans various sectors, and they have successfully executed campaigns for notable clients such as GitLab, McAfee, and Serena Williams Jewelry. Sublime has garnered recognition in the industry, winning multiple awards and being featured in lists that highlight top marketing agencies. Their commitment to data-driven marketing and real-time analytics supports their clients in achieving measurable results.


5. Barrington Media Group


Barrington Media Group, based in Shelton, Connecticut, is a marketing agency that specializes in customer acquisition through data-driven media production and advertising services. Founded in 2003, the company has built a reputation for optimizing marketing strategies and enhancing conversion rates across multiple channels. Barrington Media Group operates as a full-funnel customer acquisition platform, focusing on analytics and creative solutions to help clients achieve scalable results. They have generated over 250 million daily impressions and manage more than 350 active campaigns across various media outlets, including radio, TV, and social media. Their approach combines breakthrough creative with strategic media buying, resulting in improved response rates and conversion metrics for their clients. With a dedicated team and a commitment to innovation, Barrington Media Group continues to play a significant role in the digital advertising industry.


6. CashmanKatz

  • Website: cashmankatz.com
  • Ownership type: Private
  • Headquarters: Glastonbury, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1992
  • Headcount: 11-50
  • LinkedIn: cashmankatz

CashmanKatz, based in Glastonbury, Connecticut, is a marketing agency founded in 1992. The agency specializes in integrated marketing and advertising services, offering a range of solutions that include branding, digital marketing, public relations, and media buying. Over the years, CashmanKatz has built a reputation for delivering innovative and unexpected solutions that help clients engage effectively with their audiences. They work with a variety of clients, from global brands to local businesses, showcasing their versatility in the industry. The agency's unique approach, known as 'Octagration', combines eight key marketing practices, allowing them to tackle challenges from multiple angles. This integrated strategy is particularly relevant in today's digital advertising landscape, where cohesive messaging across platforms is crucial. CashmanKatz has not reported any funding, indicating they operate as a privately held entity without external investment.


7. Quantum Digital Media Inc

  • Website: theqdm.com
  • Ownership type: Private
  • Headquarters: Stamford, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2016
  • Headcount: 11-50
  • LinkedIn: quantum-digital-media-inc

Quantum Digital Media Inc, founded in 2016 and based in Stamford, Connecticut, is a private digital marketing agency that specializes in technology-enabled performance advertising. With a team of 19 employees, the company focuses on helping businesses in the insurance, home services, and financial services sectors optimize their marketing strategies through data-driven approaches. They provide services such as direct consumer traffic acquisition and advertising spend management, utilizing advanced analytics and artificial intelligence to enhance customer acquisition efforts. Their commitment to performance is reflected in their pay-for-performance model, which ensures that clients receive high-quality leads and measurable results. Quantum Digital Media is also a member of the Forbes Agency Council, indicating a level of recognition within the industry. Their focus on compliance with data privacy laws and their innovative use of technology further solidify their position in the digital advertising sector.


8. Noble House Media Group

  • Website: noblehousemedia.com
  • Ownership type: Family Owned
  • Headquarters: Darien, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 80%, Romania 20%
  • Founded year: 2010
  • Headcount: 11-50
  • LinkedIn: noble-house-media-group

Noble House Media Group, based in Darien, Connecticut, is a family-owned digital marketing agency founded in 2010. With a team of 20 employees, the company specializes in a comprehensive suite of marketing solutions designed to elevate the online presence of its clients. Their services range from web design and development to search engine optimization, social media marketing, and email campaigns. Noble House caters to a variety of sectors, including finance, healthcare, education, and non-profits, demonstrating their ability to create customized strategies that meet the unique needs of each client. The agency has built a reputation for being responsive and results-oriented, as evidenced by numerous client testimonials highlighting their effective communication and commitment to achieving measurable outcomes. While they have not reported any funding, their consistent growth and client success stories suggest a strong foothold in the digital marketing industry.


9. Adams & Knight

  • Website: adamsknight.com
  • Ownership type: Private
  • Headquarters: Avon, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1988
  • Headcount: 51-200
  • LinkedIn: adams-%26-knight

Adams & Knight, based in Avon, Connecticut, is a marketing agency founded in 1988. With a team of 51-200 employees, the agency specializes in integrated marketing solutions that include advertising, branding, digital marketing, public relations, and video marketing. They cater to various sectors, notably healthcare, financial services, and travel/lifestyle, helping businesses enhance their brand presence and engage effectively with their target audiences. The agency has received recognition for its work, winning multiple awards, including 13 Telly Awards in 2024 for their video marketing efforts. Their approach combines deep audience insights with creative execution, ensuring that their marketing strategies are not only innovative but also impactful. Adams & Knight's commitment to integrating digital tactics into their marketing strategies further solidifies their role in the digital advertising industry.


10. Ryan Marketing

  • Website: ryanmarketing.com
  • Ownership type: Family Owned
  • Headquarters: West Hartford, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1996
  • Headcount: 1-10
  • LinkedIn: ryan-marketing

Ryan Marketing is a family-owned marketing agency based in West Hartford, Connecticut, founded in 1996. The agency specializes in providing comprehensive marketing solutions that include strategic planning, design, public relations, and social media management. With a small team of dedicated professionals, Ryan Marketing partners with businesses and organizations to develop customized marketing strategies aimed at enhancing brand visibility and effectively connecting with target audiences. Their service offerings extend to digital marketing, where they manage Google Ads, SEO, and content development, alongside traditional marketing methods. The agency has worked with a variety of clients, as evidenced by their case studies, which highlight successful collaborations that have led to increased brand awareness and revenue growth. Ryan Marketing's commitment to being a true marketing partner rather than just a vendor reflects their approach to fostering long-term relationships with clients.


11. Win Local, Inc

  • Website: winlocal.com
  • Ownership type: Private
  • Headquarters: Stamford, Connecticut, United States (USA)
  • Employee distribution: Poland 60%, United States (USA) 40%
  • Founded year: 2019
  • Headcount: 11-50
  • LinkedIn: win-local

Win Local, Inc., founded in 2019 and based in Stamford, Connecticut, is a marketing agency dedicated to enhancing the digital marketing efforts of local businesses. With a team of 11-50 employees, the company specializes in solutions that bridge the gap between businesses and their local prospects. Their flagship offerings include the Local Engagement Program, which utilizes targeted social media advertising to reach potential customers, and ShareCard®, a digital business card that facilitates lead generation and contact management. Win Local primarily serves small to medium-sized enterprises, helping them minimize marketing expenses while maximizing their outreach and customer engagement. The company operates with a significant portion of its workforce based in Poland, indicating a global approach to service delivery. Win Local has not reported any funding, suggesting a self-sustained growth model as they continue to expand their services in the digital marketing sector.


12. Mediate.ly

  • Website: mediate.ly
  • Ownership type: Private
  • Headquarters: Farmington, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2017
  • Headcount: 11-50
  • LinkedIn: mediate-ly

Mediate.ly, founded in 2017 and based in Farmington, Connecticut, is a private media agency that specializes in demand generation and paid media services. With a team of 28 employees, the agency focuses on creating comprehensive media strategies, planning, and buying solutions tailored to industries such as healthcare and education. Mediate.ly leverages advanced technology and data-driven insights to enhance lead generation and optimize advertising campaigns. Their partnerships with platforms like Google, where they hold a Premier Partner status, and Roku, allow them to utilize cutting-edge advertising technologies. The agency prides itself on a consultative approach, ensuring that they understand their clients' unique needs and deliver tailored solutions. Their work has resulted in significant outcomes for clients, including impressive digital impressions and increased engagement metrics, showcasing their effectiveness in the digital advertising space.


13. GO Agency

  • Website: go-agency.com
  • Ownership type: Private
  • Headquarters: Hartford, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2004
  • Headcount: 11-50
  • LinkedIn: goagencyus

GO Agency is a marketing agency based in Hartford, Connecticut, with an additional office in Atlanta, Georgia. Founded in 2004, the agency specializes in a wide range of marketing and advertising services, including digital marketing, branding, web design, and video production. With a team of creative strategists, GO Agency focuses on helping brands enhance their visibility and connect with their audiences through tailored strategies. They have worked with various clients, from local businesses to well-known organizations, demonstrating their capability to handle projects of different scales. Their commitment to quality work has earned them recognition, including being named one of the Best Places to Work in Connecticut. GO Agency's approach combines creativity with data-driven practices, ensuring that their marketing solutions are both innovative and effective.


14. Rebel Interactive Group


Rebel Interactive Group, rebranded as Rebellion Group, is a consulting firm based in Cheshire, Connecticut, founded in 2013. With a team of approximately 89 employees, the company specializes in strategic consulting, creative services, and digital experiences. They cater to a wide array of industries, including healthcare, education, and consumer goods, providing tailored solutions that enhance brand visibility and market positioning. Their service offerings include business consulting, branding, digital development, and customer engagement strategies. Rebellion Group has worked with prominent clients such as Aetna, Bank of America, and Cornell University, showcasing their ability to deliver impactful marketing solutions. The firm emphasizes a collaborative approach, aiming to provoke and disrupt traditional marketing norms to help clients innovate and grow.


15. RMI Direct Marketing

  • Website: rmidirect.com
  • Ownership type: Private
  • Headquarters: Danbury, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1985
  • Headcount: 11-50
  • LinkedIn: rmi-direct-marketing-inc.

RMI Direct Marketing, based in Danbury, Connecticut, has been a player in the marketing industry since its founding in 1985. The company operates as a private agency with a team of 27 employees, focusing on providing tailored marketing solutions to both businesses and nonprofit organizations. Their services cover a wide spectrum, including list brokerage, management, alternative media, and creative services. RMI Direct Marketing is particularly noted for its expertise in digital marketing, where they assist clients in planning and managing campaigns across various channels such as email, social media, and online advertising. Their commitment to understanding client needs and delivering customized strategies has allowed them to maintain long-term relationships with many clients, some of whom have been with them since the beginning. RMI Direct Marketing has not reported any funding, indicating a self-sustained business model that relies on its operational capabilities and client relationships.


16. LSC Marketing Group

  • Website: lscmarketinggroup.com
  • Ownership type: Private
  • Headquarters: Bethel, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1980
  • Headcount: 51-200
  • LinkedIn: lscdigital

LSC Marketing Group, based in Bethel, Connecticut, is a marketing agency that has been operational since 1980. The company specializes in direct marketing, digital marketing, and data services, providing a wide range of solutions to help businesses connect with their target audiences. Their services include data acquisition, list brokerage, email marketing, search engine optimization, and creative services such as website design and content marketing. Over the years, LSC has built a reputation for its data-driven approach, helping clients enhance their marketing strategies through analytics and targeted campaigns. The firm has worked with various industries, showcasing its ability to adapt and meet the unique needs of its clients. With a dedicated team and a focus on client relationships, LSC Marketing Group continues to evolve in the marketing sector, leveraging over four decades of experience to drive results for its clients.


17. Decker

  • Website: deckerct.com
  • Ownership type: Private
  • Headquarters: Glastonbury, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1977
  • Headcount: 11-50
  • LinkedIn: decker-creative-marketing

Decker is an independent advertising agency based in Glastonbury, Connecticut, with a history spanning over four decades. Founded in 1977, the agency has evolved alongside the advertising industry, adapting to changes in technology and consumer preferences. Decker specializes in creating culturally relevant marketing campaigns that resonate with audiences. Their service offerings include advertising, branding, digital marketing, public relations, content production, and media strategy. The agency has collaborated with a variety of clients, including government organizations and healthcare providers, demonstrating their capability to handle projects across different sectors. Decker's approach emphasizes authenticity and engagement, aiming to produce work that feels more like entertainment than traditional advertising. Their portfolio reflects a commitment to innovation and a deep understanding of the modern consumer's needs.


18. Web Solutions

  • Website: websolutions.com
  • Ownership type: Family Owned
  • Headquarters: Wallingford, Connecticut, United States (USA)
  • Founded year: 1996
  • Headcount: 11-50
  • LinkedIn: web-solutions

Web Solutions, also known as Exposure, is a family-owned web design agency based in Wallingford, Connecticut, founded in 1996. With a team of approximately 32 employees, the company specializes in crafting custom websites and providing a suite of digital marketing services aimed at improving clients' online visibility. Their offerings include branding, graphic design, web development, and various digital marketing strategies such as SEO, digital advertising, social media management, and email marketing. Exposure has worked with a range of clients, from non-profits to educational institutions, showcasing their ability to cater to different sectors. Their approach emphasizes collaboration and tailored solutions, ensuring that each client's unique needs are met effectively.


19. Diray Media

  • Website: diraymedia.com
  • Ownership type: Private
  • Headquarters: Norwalk, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1987
  • Headcount: 11-50
  • LinkedIn: diray

Diray Media, based in Norwalk, Connecticut, is a private media buying agency founded in 1987. With a team of 35 employees, the company specializes in performance marketing, focusing on enhancing brand visibility and driving sales through strategic advertising across multiple channels. Their services span traditional TV, connected TV, digital platforms, paid social, and more. Diray Media prides itself on its long-standing industry relationships and a proven track record of delivering significant ROI for clients, which include well-known brands in consumer goods and health and wellness sectors. The agency emphasizes a collaborative approach, ensuring senior leadership is involved throughout client engagements. Their commitment to transparency and optimization in media buying further solidifies their role in the advertising industry.


20. List Services Corporation


List Services Corporation, operating as LSC Marketing Group, is a marketing agency based in Bethel, Connecticut. Founded in 1980, the company has built a reputation for providing data-driven marketing solutions. Their services range from data acquisition and management to digital marketing strategies, including email marketing, search engine optimization, and social media engagement. LSC Marketing Group prides itself on its ability to enhance customer engagement through tailored marketing strategies, serving clients across various industries. With over 40 years of experience, they have developed a robust understanding of the direct marketing landscape, allowing them to adapt and expand their services to meet evolving client needs. Their commitment to data analytics and campaign management positions them as a significant player in the digital advertising field.


21. Bmg360

  • Website: bmg360.com
  • Ownership type: Private Equity
  • Headquarters: Shelton, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: March 2020
  • Founded year: 2003
  • Headcount: 51-200
  • LinkedIn: barrington-media-group

Bmg360, based in Shelton, Connecticut, is a marketing agency founded in 2003 that specializes in performance marketing. With a workforce of approximately 165 employees, the company provides a comprehensive suite of services aimed at enhancing marketing strategies and improving customer acquisition for businesses across various sectors. Their offerings include digital audio, television, radio advertising, programmatic buying, paid search, paid social, direct mail, and search engine optimization. Bmg360 operates with a focus on data-driven decision-making, utilizing their proprietary platform, OneSource™, to optimize campaigns and ensure effective targeting. The agency has successfully managed substantial media budgets, indicating their capability to drive significant revenue growth for their clients. Their case studies highlight successful campaigns that have led to impressive increases in market presence and conversion rates, further solidifying their role in the digital advertising space.



Digital Advertising Insights: Key Companies in Connecticut


CompanyHeadquarterSizeFoundedOwnership
CroninGlastonbury, Connecticut, United States (USA)51-2001947Corporate
MasonBethany, Connecticut, United States (USA)11-501951Private
Zero Gravity MarketingMadison, Connecticut, United States (USA)51-2002013Private
Sublime CommunicationsStamford, Connecticut, United States (USA)11-502016Private
Barrington Media GroupShelton, Connecticut, United States (USA)201-5002003Private
CashmanKatzGlastonbury, Connecticut, United States (USA)11-501992Private
Quantum Digital Media IncStamford, Connecticut, United States (USA)11-502016Private
Noble House Media GroupDarien, Connecticut, United States (USA)11-502010Family Owned
Adams & KnightAvon, Connecticut, United States (USA)51-2001988Private
Ryan MarketingWest Hartford, Connecticut, United States (USA)1-101996Family Owned
Win Local, IncStamford, Connecticut, United States (USA)11-502019Private
Mediate.lyFarmington, Connecticut, United States (USA)11-502017Private
GO AgencyHartford, Connecticut, United States (USA)11-502004Private
Rebel Interactive GroupCheshire, Connecticut, United States (USA)51-2002013Private
RMI Direct MarketingDanbury, Connecticut, United States (USA)11-501985Private
LSC Marketing GroupBethel, Connecticut, United States (USA)51-2001980Private
DeckerGlastonbury, Connecticut, United States (USA)11-501977Private
Web SolutionsWallingford, Connecticut, United States (USA)11-501996Family Owned
Diray MediaNorwalk, Connecticut, United States (USA)11-501987Private
List Services CorporationBethel, Connecticut, United States (USA)51-2001980Private
Bmg360Shelton, Connecticut, United States (USA)51-2002003Private Equity


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