Best SEO Agencies in Chicago, IL (2026) – Ranked by Case Studies
DFIN Client-verified
PPC, SEO
Finance
1K-5K Employees
N/A
Chicago, IL
N/A- 50 Million Impressions
- 300% Increase in conversions
Atlas HXM Client-verified
PPC, SEO, Lead GenerationProfessional Services1K-5K EmployeesN/AChicago, ILN/A- 4x deal volume and 3x deal quality in 7 months
- Conversion rate +34%
- Cost per opportunity down 27%
- MQL-to-opportunity rate from 41% to 55%
- Google Ads pipeline delivered ~5.5x ROI on spend
Killerspin Client-verified
Web Development, SEO, PPCSporting Goods11-50 EmployeesN/AChicago, ILN/A- Replatformed the store to Magento linked to warehouse operations
- Sales tracking live from day 1
- Distribution in 14 countries across 5 continents
SEOFood & Beverage501-1K EmployeesN/AChicago, ILN/A- 283% increase in organic search impressions
- 211% increase in organic search traffic YoY
- 2,826 new page 1 rankings for non-brand keywords
SEOMental Health51-200 EmployeesN/AChicago, ILN/A- 22% increase in organic clicks
- 63% increase in organic impressions
- Keywords in positions 1-3 grew from 30 to 55
Content Marketing, SEOEducation501-1K EmployeesN/AChicago, ILN/A- 20% increase in total organic search traffic YoY
- 52% increase in organic clicks to the blog YoY
- 47% increase in organic search lead volume YoY
PPC, CRO, SEORetail201-500 EmployeesN/AChicago, ILN/A- 49% Decrease in Paid CAC
- 60% Increase in Google Paid Search Net Sales
- 25% Increase in Site-Wide Net Sales Through PMax Campaigns
AEO, CRO, SEO, Email Marketing, SMS MarketingRetail201-500 EmployeesN/AChicago, ILN/A- 20% YoY Net Revenue Growth
- 25% YoY Improvement in Purchase CVR
- 331% QoQ Lift in Engine Activations
SEO, Web DesignMedia & BroadcastingN/AN/AChicago, ILN/A- New responsive site with drop-down navigation and embedded videos
- Pages optimized for search
Web Design, SEOManufacturingN/AN/AChicago, ILN/A- Redesign with order and quote forms on each product page
- Mobile-responsive site for a drive-thru window manufacturer
SEOProfessional Services11-50 EmployeesN/AChicago, ILN/A- 269% more clicks in 9 months
- 170% more impressions in 9 months
- 167% more organic pages in 17 months
SEO, Content MarketingRetail1-10 EmployeesN/AChicago, ILN/A- 169% increase in organic traffic
- Revenue up 40% year over year in November ($100K to $140K)
- #1 and #2 for "electric cigar humidor"
Branding, Web Development, PPC, Web Design, SEONon Profit51-200 EmployeesN/AChicago, ILN/A- +56.7% Boost in Organic Search
- +43.95% Time on Site
- +51.04% Increase in Page Visits
SEO, PPC, Web DesignClinic11-50 EmployeesN/AChicago, ILN/A- +241% Total Traffic
- +500% Organic Traffic
- +272% New Website Users
- +116% Lead Form Submissions
Content Marketing, SEOEcommerceN/AN/AChicago, ILN/A- 54% Increase in Traffic Value Within 1 Year
- 26 Siege-Generated Posts Ranking Page One
- 427+ Links
SEO, Local SEO, Link BuildingLaw Firm11-50 EmployeesN/AChicago, ILN/A- Referring domains grew from ~190 to ~600 (Ahrefs, 2018 to 2022)
- Organic new users grew from ~3,800 to ~12,000 per month (Jul 2019 to 2022)
SEO, Web DesignConstructionN/AN/AChicago, ILN/A- 3X growth in ecommerce sales
- Products previously invisible on Google now found
SEOFurnitureN/AN/AChicago, ILN/A- 12.26% Increase in Traffic for This Adjustable Bed Company
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