Best SEO Agencies in the United States (2026) – Ranked by Case Studies
Buchanan Technologies (replacing cold calling) Client-verified
- $49.6M in attributed revenue
- Marketing leads grew from 5-6 per year to 300-400, closing 20-25%
- 30+ marketing-qualified leads per month
Power Consulting (referral dependency) Client-verified
- $10M in revenue unlocked
- Broke out of 5-7% annual growth
- 15-29 SQLs per month
Buchanan Technologies (freelancer chaos to a 9x engine) Client-verified
- $49.6M in revenue
- $494,000+ in attributed MRR
- 25-30 leads per month on average (up to 40)
- 2,200x increase in visibility
- 10x traffic growth
Lash Crush Client-verified
- Appointments grew from 100 to 500 per month
- 90% of clients now come from Google search
- All 6 rooms filled (previously empty)
Ultra Select Medical Client-verified
- Revenue grew from $2M to nearly $10M per year
- Return grew from 2-3x to 6-7x per quarter
Gorilla Fabrication Client-verified
- Leads grew from 1-2 per week to 1-2 per day
- Website put the company in front of nationwide clients
Powersystems Group Client-verified
- Website sessions: 3,109 (+1,751%)
- Organic search sessions: 852 (+5,580%)
- 34,689 Facebook media views
- Instagram views: 17,363 (+17,986%)
- 7,395 search impressions
Ybarra Law Firm Client-verified
- Booked 1-2 weeks out in consultations
- Facebook impressions: 83,844 (83.6% paid), with 1,000+ new page likes
- CRM engagement +1,200% (April 2025)
- Bilingual, ADA-compliant website
- Google Local Services Ads with Google Guarantee badge
NuvoDesk Coworking Client-verified
- Google Analytics sessions: 70,808 (+616%)
- Paid search traffic +589% (Jan-May 2025)
- Facebook: 89 new page likes, 1,332 total
- Most tours now come from Google and Facebook
Qualis Client-verified
- +174% Organic Traffic (YoY)
- +427% Top 10 Organic Keywords (YoY)
- +224% New Organic Users (YoY)
- +68% Organic Conversions (6 Months)
The Farah Law Firm Client-verified
- +533% Site Visitors
- +664% Search Traffic
- +780% Referral Traffic
- +360% Online Leads
Max Mechanical HVAC Client-verified
- +763% Qualified Leads
- -16% Bounce Rate
- +20% Page Views
- +349 Top 5 Keyword Rankings
Arch Moving Client-verified
- Revenue up 240% to over $2.4M in sales
- Tripled the number of trucks
- Grew from 2 full-time employees to 35
- Revenue doubled each year for two years, with most calls coming from Google
SETT Movers Client-verified
- Sales grew from $400,000 to over $1,000,000 a year in two years, up 250%
- Went from non-existent on Google Maps to dominating a 10-mile radius
PNW Moving & Delivery Client-verified
- Sales grew from $380,000 to almost $1,000,000, closing 2022 just shy of $1M
- Over $365,000 in sales came directly from Google traffic and SEO work
Optalis Healthcare Client-verified
- 169% year-over-year increase in AI-referred traffic
- AI-referred entrances grew from 36 (July 2025) to 97 (July 2026)
Otterbein SeniorLife Client-verified
- 59% year-over-year increase in new contacts
- 41% year-over-year increase in leads to sales
- 63% year-over-year increase in customer growth
Kendal at Oberlin Client-verified
- 9,029% ROI: resident lifetime value of move-ins vs. marketing spend
- 66% increase in paid advertising leads
- 123% increase in AI referral sessions in a year
- Prospect database cleaned, reducing total contacts by 31%
Arcadia Client-verified
- Organic traffic value up 1,361%, from $3,633 to $53,095 a month
- Page 1 target keywords up 975%, from 4 to 43
- Organic traffic up 62% through technical SEO
Capital Campaign Pro Client-verified
- 15.2% year-over-year increase in organic traffic
- Page one rankings for highly competitive capital campaign keywords
DonorSearch Client-verified
- 10x revenue growth in the organic lead generation channel
- Organic search visibility up 676.5% and traffic up 801%
- 82 valuable keywords on page one, 70 of them in positions 1-3
- Warm leads improved 4x after the first phase
Bierschbach Equipment & Supply Client-verified
- Website phone calls +143% during the campaign
- Application clicks +107%
- Careers page traffic +63%
- 650 clicks from Google Demand Gen ads, 13% lead conversion rate
- 3 positions filled
Big Lost Meadery Client-verified
- Direction requests +42% from the Google Business Profile
- Top 3 in the Map Pack for "breweries in Sioux Falls"
- #1 result for meadery-related terms in Sioux Falls
- Website clicks +12% and phone calls +14%
- 24 more citations in local listings
Landscape Garden Center Client-verified
- Google Map visibility +100% (average rank from #5 to #2)
- 116 locally ranked keywords, 35 in the #1 position
- Website sessions from Google Ads +57% year over year
- Project request form submissions +23%
- Brand searches +13% and overall search visibility +34%
Smartling Client-verified
- $3.7M in qualified pipeline from organic search
- 31,250% increase in blog conversions
- 130x sitewide conversions
- 12.8x ROI on organic search program
- 118% boost in organic blog traffic
Jasper Client-verified
- 810% growth in organic blog sessions
- 400x blog-attributed product signups
- $4M blog-attributed ARR
AppSumo Client-verified
- 843% growth in organic traffic
- 340% growth in revenue from organic traffic
- 10x blog traffic
Steam And Sauna Experts Client-verified
- Monthly sales from $720 to $132,602.40
- Organic traffic +677.83%; monthly impressions from 67.5k to 1.83M
- 197+ keywords in Google's top 3 and 1.3k+ in the top 10
- #1 in the Google 3-pack for sauna and steam room installation in Fort Lauderdale
- 60+ local leads every month
Arrowfish Consulting Client-verified
- Organic traffic 17.6x and 385 qualified leads in 6 months
- Impressions +654.4%
- #1 in Google for 'business valuation Utah' and 'business valuation Salt Lake City'
- Featured #2 in Google AI Mode for 'business valuation services in Utah'
Souffront Construction & Engineering Client-verified
- Organic traffic +1,112.12% and impressions +1,477.7% in 8 months
- 278 organic leads generated
- Top 10 in Google for 500+ high-volume keywords
- Top 3 for 30+ keywords tied to 40-year recertification
- 200+ citation links built for local SEO
Aldaris CPA Group Client-verified
- 496% increase in gross receipts using SEO alone
Innovative Men's Clinic Client-verified
- New women's clinic brand grew from near zero to 6-10 new appointments per week through SEO
Reputation Igniter Client-verified
- Referral partnership: hundreds of first-page keywords for a coworking pilot
Proxy Networks Client-verified
- First-page SERP rankings competing with enterprise players such as Cisco
- Multi-layered SEO and link-building program
Rockland Trust Client-verified
- First-page rankings for relevant local keywords
- Conversion-focused microsites supporting seasonal campaigns
IC Credit Union Client-verified
- 32% increase in organic traffic
- 26% increase in ranking keywords
Thompson Tractor Client-verified
- 586% Increase in Traffic From Generative AI Sources
- 500% Increase in leads driven from AI platforms
- 136% Increase in Visibility in Google AI Overviews
- 116% Higher Visibility in LLMs than Closest Competitor
- 38% Avg Increase in SEO Leads YoY
10X Engineered Materials Client-verified
- 37% increase in total AI answers appearances
- 48% higher visibility than closest competitor
- 125% increase in overall AI overview visibility
- 229 content syndications for seed content article
All Pro Trailer Superstore Client-verified
- 113% Increase in SEO Conversions
- 50% Increase in SEO Conversion Rate
- 600% Increase in Leads from Email Marketing
- 46% Increase in SEO Users
- 948% Increase in Web Visits from Email
Threadbird Client-verified
- 1,042% increase in paid goal completions
- 190% increase in paid social goal completions
- 53% increase in first page rankings in the first year
Arcadia Data Client-verified
- 510% increase in first page rankings in the 1st six months
- 23x return on internal goals
- 2122% increase in first page rankings to date
Collette Client-verified
- +2,400% First-Page Rankings
- -45% Paid Search Cost Per Acquisition
O'Neill's Transmission and Auto Client-verified
- 976+ Leads generated through targeted Google Ads
- 87 Conversions qualified service conversions at $35 each
- Local Reach expanded across Michigan and Northern Indiana
- Reputation amplified through a consistent digital presence
Taps Pest Services Client-verified
- 72 Leads new customer inquiries from search and paid campaigns
- +72% Search Console clicks, first half vs. second half
- Top 10 average position for high-intent service + location queries
- 53,000+ Google Ads clicks
- 37+ Pages launched for service coverage
Miami Sailing School Client-verified
- $100K+ revenue growth within the first 12 months of the integrated campaign
- 70+ Qualified Leads from Google Ads, sustained at 25-40 per month
- 39 Keywords new buyer-intent keywords added in one year
- 144+ / mo. organic visitors, grown from zero
- Top Local Search for "Miami Sailing" across Google Business Profile and SERP
Inspirus Client-verified
- Organic sessions up 18x in 12 months (about 1,200 to 22,866 per month)
- First-page keywords from 86 to nearly 2,000, with 773 in the top three
- SERP features from 24 to 1,542 (+6,325%)
- 183 new organic contacts and 16 organic-only opportunities
- 17% of all new logo opportunities
iCONN Systems Client-verified
- Top-10 keywords +482% in 24 months (27 to 157)
- Organic traffic +327% (802 to 3,428)
- New organic contacts +61% (75 to 121)
- Featured snippets from 1 to 8; People Also Ask from 0 to 73 keywords
- Visibility index +302% (3.7% to 14.9%)
AAON Client-verified
- 19.16% click-through rate and $1.04 CPC on Delta Class PMAX ads
- 28,999 "Prison Break" video plays
- 6,929 clicks from the video's social share button via Google Ads
- 91 AI Overview placements
- Organic traffic +6.6% year over year
Sterling Lawyers (Local Search 2026) Client-verified
- +46 points map visibility for "milwaukee family lawyers"
- +100 points map visibility for "st charles divorce lawyers"
- +51 points map visibility for "family lawyers" in Plainfield
- Top 3 in St. Charles held for 12 straight weeks
Sterling Lawyers (AI Visibility) Client-verified
- 8.19M monthly AI audience
- 496 pages cited by AI models
- 34.9K monthly organic sessions
- 28.1K ranking keywords
- 52.8K backlinks earned
Sterling Lawyers (Paid Search & SEO) Client-verified
- 1,233% return on marketing spend since 2014
Duffy & Young (SEO) Client-verified
- 56% increase in Google Business Profile calls
- 42% increase in Google Business Profile impressions
- 51% increase in Google Search impressions
- 18% growth in organic traffic
- 14% increase in Google Search clicks
Miller Law Firm Client-verified
- Referrals were 80-90% of new cases before the engagement
- Six-month SEO plan on priority personal injury keywords
- Live chat, intake center and GA4 conversion tracking added
Brewer Law Firm Client-verified
- Google Business Profile optimized and local citations built
- Regular blog content strategy launched
Premiere Auto Glass Client-verified
- 425% increase in web conversions
- 367% increase in phone calls
- Cost per click cut 50%, from $18 to $9
Cedar Creek Dental Care Client-verified
- Goal conversions up 300% in the first 3 months
- Organic clicks up 83%
- Organic impressions up 110%
- Started ranking for 906 keywords
Contemporary Family Dentistry Client-verified
- Total organic users up 400%
- Organic clicks up 35.6% and impressions up 50.8% in the first 6 months
- Goal conversions up 136%, 41.91% of them from organic sources
- Ranking for 938 keywords, 150% more than the year before
MediKeeper Client-verified
- 16% increase in users
- 20% increase in % of new users
- 9% increase in # of sessions
- 26% increase in organic search traffic
Perr&Knight Client-verified
- 168% increase in contact form submissions
- 193% increase in consultation requests on the website
- 84% Growth in organic search traffic
- 125% increase in sessions
- 150% increase in rise in direct traffic
- 216.70% increase in users
- 197.97% increase in sessions
- 120.28% increase in pageviews
- 48.58% increase in organic search
- 128.47% increase in referral traffic
Hanover Company Client-verified
- Net lease rate up from 64% to 73%, beating the luxury lease-up benchmark
- Tracked conversions up 79% year over year, from 119 to 311
- Google Business Profile clicks to the website up 45% to 1,417
- Completed applications rose from zero to 13
Paul Davis Client-verified
- 731% ROI from digital marketing
- Franchise locations see a 3x to 7x return on investment
- Milwaukee location: 1 to 61 AI Overview appearances and 59% more calls
- 17x increase in organic traffic
- 282% increase in organic rankings
- 60x increase in SEO-driven conversions
DFIN Client-verified
- 50 Million Impressions
- 300% Increase in conversions
Kelair Dampers Client-verified
- +141% Increase in leads
- 1,221% Increase in Website Traffic
- 70% Increase in Monthly Phone Leads
- 800% Increase in Traffic to Membership Subscription Plans Page
- 2,800% Increase in Traffic to Emergency Treatment Page
- 30+ Increase in Local First Page Rankings
Rivet Client-verified
- 230% Increase in New User Sign-Ups
- 659% Increase in Site Users
- 64% Increase in Engaged Accounts
Invisibly Client-verified
- 65% MoM Decrease in CAC
- 84% Increase in Organic Website Traffic
- 400% Increase in User Retention QoQ
- 103% MoM Increase in App Installs
- 102% Increase in HCP & Patient Leads
- 107% Increase in Conversion Rate
- 43% Decrease in Cost Per Lead
TYKMA Electrox Client-verified
- Overall traffic +402%
- Search engine traffic +540%
- Monthly leads +314%
- 30.3x ROI for SEO and PPC in 2021
Kent State University (College of Business) Client-verified
- Leads from Google Ads +366% (2016 vs. 2015)
- Overall leads +135% and paid leads +148% (2017 vs. 2016)
- 6.4x ROI in 2017
- 10+ enrollments and nearly 3x ROI in 2019
- 190x ROI on SEO over a three-year window
- $10M+ in new sales attributed to organic search
- Qualified monthly leads grew from 15 to 50
- 10+ year partnership
Nationwide Plastics Client-verified
- Organic conversions +192% in the first quarter after launch (38 to 111)
- Overall conversions +162% (199 to 522 leads)
- Organic traffic +46% (3,162 to 4,612 visits)
- Magento e-commerce site
Stainless Drains Client-verified
- Leads +1,114% (72 to 874 form submissions)
- Traffic +398% (4,014 to 19,986 visits)
- 3D model and drawing catalog integration
- Mobile and tablet form submissions +356% (71 to 324)
- Total online form submissions +263.91% year over year (28 to 103 per month)
- Responsive site with before/after photo galleries
- WebAwards: Medical Standard of Excellence
Tisch Scientific Client-verified
- 30% annual growth rate sustained for 5 years
- 250% increase in revenue
- 1,789% increase in SEO traffic
Blade & Blue Client-verified
- +405% ROAS on paid campaigns
- +65% revenue growth
- +71.2% increase in conversion rates
- 6x increase in search visibility
- 2.3x increase in leads
- 2.6x increase in job applications
Proterial Cable America Client-verified
- 147% non-branded organic clicks
- 60% organic engaged sessions
- 75% of keywords ranking on page 1 of Google
- Moved from page 20 to page 5 of Google
Zentz Industrial Services Client-verified
- Google Ads conversions in under 2 months
- Google Ads rebuilt and SEO strategy implemented
- Goal completions up over 50% year over year
- Higher monthly website traffic
Hunter Law Client-verified
- Website rebrand with on-site corporate photography
- PPC and SEO search marketing campaign
- 450+ location-targeted SwarmPages across Tampa Bay
Cables Unlimited Inc. Client-verified
- New website on a custom WordPress theme
- SEO and content creation
- Review management and business listings
- Ongoing SEO retainer with monthly strategy calls
- Hernando County location landing pages
- Technical SEO setup and keyword research
- AI SEO performance reporting
Cardinal Expo Client-verified
- +154.46% organic sessions year on year (909 to 2,313)
- Higher conversion rate and lower cost per conversion on PPC
Goodbee Plumbing and Drains Client-verified
- 54,000+ organic users (+281% vs the previous 6 months)
- 67,500+ organic pageviews (+245%)
- 21 #1 Google rankings
- +57.4% Google Ads conversion rate
- +72% website conversions from Google Ads
- +40% organic search traffic
- +33% time on site per visitor
- +15% pages per visit
KindDesigns Client-verified
- 9.8K+ sessions and 7K+ page views
- 200K+ organic impressions and 10K+ clicks
- 52.52% engagement rate, with 48.13% of traffic from organic search
Breezy Permits Client-verified
- 70% of tracked keywords in the top 5
- 5K+ monthly impressions and 200+ clicks
- 15 monthly form submits
- 55% new users and 45% returning users
- 200+ organic clicks and 40K+ organic impressions
- 1.5K+ sessions and 1K+ page views
- 52.52% engagement rate, with 48.13% of traffic from organic search
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