10 Best Marketing Agencies in St. Louis [2026 Updated]

1. Atomicdust

• Focus: Brand strategy, web design, and digital marketing
• URL: https://www.atomicdust.com
• Overview: Atomicdust is a St. Louis-based agency that builds brands and websites for mid-size and enterprise organizations. The team combines strategy, creative, and technology to deliver integrated digital campaigns.

2. Moosylvania

• Focus: Experiential and brand marketing
• URL: https://www.moosylvania.com
• Overview: Moosylvania is a St. Louis marketing agency that creates brand activations, experiential campaigns, and digital engagement strategies. It works with consumer brands that want to connect with audiences in memorable ways.

3. Mighty Rockets

• Focus: Digital marketing and web design
• URL: https://www.mightyrockets.com
• Overview: Mighty Rockets is a St. Louis digital agency that provides web design, SEO, paid media, and content marketing. It primarily serves small and mid-sized businesses looking for practical, growth-focused online marketing.

4. Perficient Digital (formerly Hanon McKendry)

• Focus: Digital experience and SEO
• URL: https://www.perficient.com
• Overview: Perficient is a global digital consultancy headquartered in St. Louis, offering digital strategy, SEO, and analytics services. It serves large enterprise clients that need scalable technology-driven marketing.

5. Fleishman Hillard

• Focus: Public relations and communications
• URL: https://fleishmanhillard.com
• Overview: FleishmanHillard is a global communications firm that was founded in St. Louis and maintains a presence there. It offers PR, reputation management, and integrated communications for large brands.

6. Kuhlmann Leavitt

• Focus: Public relations and integrated communications
• URL: https://www.kuhlmannleavitt.com
• Overview: Kuhlmann Leavitt is a St. Louis agency that provides PR, advertising, and digital marketing services. It serves regional and national clients that need strategic communications and brand storytelling.

7. Falk Harrison

• Focus: Brand strategy and creative advertising
• URL: https://www.falkharrison.com
• Overview: Falk Harrison is an independent St. Louis creative agency with deep experience in brand positioning and advertising. It develops campaigns for consumer and B2B clients across multiple channels.

8. Brighton Agency

• Focus: Integrated marketing and digital advertising
• URL: https://www.brightonagency.com
• Overview: Brighton Agency is a St. Louis-area marketing agency offering brand strategy, creative, digital marketing, and media services. It works with regional and national clients on integrated, results-driven campaigns.

9. Little Green Dot

• Focus: Digital marketing and SEO
• URL: https://www.littlegreendot.com
• Overview: Little Green Dot is a St. Louis digital marketing agency offering SEO, paid search, and web design. It helps small and midsize businesses improve online visibility and lead generation.

10. Kiku Obata & Company

• Focus: Brand identity and design
• URL: https://www.kikuobata.com
• Overview: Kiku Obata & Company is a St. Louis design and branding firm that develops brand identities, environmental graphics, and marketing communications. It works with corporate, institutional, and nonprofit clients.