Adcetera
Houston, Texas, USADigital marketing agency
Houston-founded marketing and advertising agency with a media practice that includes SEO, local SEO, technical SEO, ecommerce SEO, enterprise SEO and GEO.
SEO Agencies in Illinois
Compare 9 SEO agencies with a published business address in Illinois, plus 60 serving the area remotely.
9published address
60serving remotely
3cities
1publish pricing
Most documented here: AI Search Visibility (7) · Local SEO (4) · Technical SEO (4) · Shopify (1) · SaaS (2). Counts cover the agencies listed on this site, not the whole market.
Listed A–Z. Order is not a ranking or quality score.
Be Found Online (BFO)
Chicago, Illinois, USADigital marketing agency
Chicago digital marketing agency with a dedicated SEO practice covering technical and on-page work, local SEO, off-page link building, content for SEO, website migrations and AI search…
Deep Footprint
Chicago, Illinois, USADigital marketing agency
Chicago digital marketing company focused on search engine optimization, search engine marketing and social media marketing, publishing an SEO primer on its site.
Digital Authority Partners
Chicago, Illinois, USADigital marketing agency
Chicago integrated digital marketing agency with dedicated technical, ecommerce, local and enterprise SEO pages.
Direct Online Marketing
Pittsburgh, Pennsylvania, USADigital marketing agency
Pittsburgh-headquartered digital marketing agency offering SEO, generative engine optimization, PPC, analytics and web design, with additional offices in Wheeling and Chicago and…
dNOVO Group
Toronto, Ontario, CanadaDigital marketing agency
Toronto-headquartered SEO and digital marketing agency with a strong vertical focus on law firms and medical practices.
RivalMind
St. Charles, Illinois, USADigital marketing agency
Digital marketing agency in St. Charles, west of Chicago, founded by a former in-house senior digital marketer; offers SEO, AI search optimization, web design and social media.
Siege Media
San Diego, California, USADigital marketing agency
Content-led SEO and GEO agency headquartered in San Diego with additional offices in San Francisco, Austin, Chicago and New York.
250,000 ChatGPT visits for Mentimeter · agency-reported
Straight North
Downers Grove, Illinois, USADigital marketing agency
Full-service digital marketing agency in the Chicago suburbs that sells SEO, GEO/AI search, paid media, web design and creative.
Agencies serving this area remotely
They state they serve United States but have no published address in Illinois.
Augurian
Minneapolis, Minnesota, USA · Technical SEO · SEO Content Strategy · Website Migration SEO
Badass Web Goddess
Albuquerque, New Mexico, USA · SEO Audits · Local SEO
