Best SEO Agencies in the United States (2026) – Ranked by Case Studies
KCS Building Group Client-verified
- New website, messaging and design
- Conversion-driven service page copywriting
- Always-visible phone number and contact form
- SEO baselines
CloudSmart IT Client-verified
- New website showcasing IT services and elevating the brand
- A page for each IT service with calls to action
- Blog for news, insights and tech tips
- SEO campaign
- Six-month SEO campaign to raise rankings, authority and organic sessions
- Keyword research, on-site, technical and off-site SEO
- Core Web Vitals and site speed optimization
- Reach expanded from Nashville to the US for the online coaching program
Atlas HXM Client-verified
- 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
Helpshift Client-verified
- 16x pipeline influence and 5x ROAS over 24 months
- Brand awareness among the ICP +80%
- $700K pipeline influenced via ABM
- Opportunities created +26%
- Organic clicks up 11.5x in 9 months
- Impressions up roughly 401x monthly
- LLM referral sessions up 22x in six months
- Average ranking improved from below page four to the top ten
Elite Smiles of Louisville Client-verified
- 98 verified qualified leads a month after 20 months, up from 44
- SEO alone drives 80 qualified leads a month at $11.25 each
- Overall cost per qualified lead down from $209 to $34
Dental Solutions of Central Park Client-verified
- Page 1 Google keywords up from 6 to 20+
- 49 verified SEO leads a month at $18 each, down from $560 per qualified lead
- Cost per new patient cut 76%, from $177 to $43
- Verified new patients up 77%, from 39 to 69 a month
- Google reviews up from under 100 to 849 at 4.8 stars
- Ranking #1 for "family dentist aurora"
Inspire Kids Montessori Client-verified
- 50+ leads per month and 150 enrollments in under 12 months
- About 300 leads and 93 enrollments within 90 days
- Organic traffic up 240% with 3,300 new organic users
- Page ranking up 260+ spots and click-through rate up 28.9%
First Family Insurance Client-verified
- 1,000+ leads per month after a year, at a 30% landing page conversion rate
- 80% contact rate
- Average cost per lead of $12, down from $26 in the first months
- 192 PPC leads, with a 53% conversion rate and 95% from live phone calls
- Cost per lead cut from $172.50 to $128.64 in three months
- 220% increase in organic traffic
Cutting Edge Countertops Client-verified
- Conversions +24% by February, +40% by March and +25% in April
- 44,185 organic sessions and 18,143 paid search sessions
- 195K overall web sessions
- Average CTR 5.03%
Firenza Stone Client-verified
- Clicks +1,027.4%
- Website conversion rate +651.3%
- Organic traffic +105%
- Average 135 leads a month
- Cost per click -14.4%
- Conversions +100%
- Organic traffic +100%
- User engagement +100%
- Google and YouTube ads within a 30-mile radius
Assisting Hands Home Care (The Villages) Client-verified
- Organic sessions +5,296% since August 2023
- New users +5,301%
- Engagement time +36.72%
- Traffic grew more than 35-fold from the baseline
Mid-West Moving & Storage Client-verified
- Brand-new mobile-friendly website
- Improved keyword rankings, organic traffic and conversions since 2018
- New responsive site with drop-down navigation and embedded videos
- Pages optimized for search
La Diosa Client-verified
- Miami Lakes profile visibility up 63% and high-value keyword results up 69%
- Calle 8 profile visibility up 30% and high-value keyword results up 35%
- #1 in Google Map Pack for "Mexican food" and "tacos" across two locations
- #1 organic ranking for "Mexican restaurant near me" and "taco Tuesday"
- Helped triple revenue through organic SEO, Map Pack marketing and website automations
Spencer Couture Client-verified
- Google Business profile visibility up 290% and keyword search results up 581% year over year
- Top 2 in the Google Map Pack for "Las Vegas Art Gallery"
- Organic traffic up 91% in 9 months
- 3,000+ ranked keywords in 9 months
- #1 for "How to Get Weed in DC"
Decks & Docks Lumber Company Client-verified
- Google Ads impressions up 2,176% to 2.16M, 2021 to 2022
- Ad clicks up 78%, to 15,225
- Ad conversions up 120%, to 2,393
- Cost per acquisition down 39% and cost per click down 25%
- Earlier SEO work drove 658% more website traffic
The Associates Home Loan of Florida Client-verified
- Google Ads impressions up 42% and clicks up 60% year over year
- 1,448 conversions, up 21% year over year
- 127% increase in Google rankings year over year
- 239K users from SEO, up 26% year over year
- Call clicks up 95% and direction requests up 138% year over year
- 299% increase in total sales vs. the previous three months
- 163% increase in organic sessions, to 37K+
- 222% increase in total conversions, to 980
- 46% increase in average order value
- 144K total sessions, up 85%
KT Tape Client-verified
- Social media following growth for a kinesiology tape brand
- Live streaming and brand partnerships
- Video production
Plasticity Brain Centers Client-verified
- Website design and development for a neurorehabilitation center
- Infographics and video production
- SEO, PPC and social media marketing
- More website traffic for a Toyota dealership
- SEO and pay-per-click campaigns
- Newsletter design and distribution
Warren Law Firm Client-verified
- Revenue tripled, from $650K in 2021 to $1.9M in 2023 (21 months)
- Google PPC returned up to 9X ROI on ad spend
- 1,730 PPC conversions from January to August 2023
- 474% increase in SEO keywords
- Monthly organic traffic up from 69 to 4,200 visitors
Din Law Group Client-verified
- Organic traffic up 12.6X, from 74 to 933+ monthly visits
- Ranking keywords up from 60 to 2,200
- Backlinks up from 111 to 1,098
- 2,795 paid search leads from calls and forms
- Active caseload doubled
- Website traffic up 590% and conversions up 245%
- Spanish-language video got 151% more impressions than English at 68% lower cost
- Spanish video relevancy score 5x the English video's
Blind & Sons, Inc. Client-verified
- 54% increase in leads from SEO
- 252% increase in leads from PPC
- 194% total lead increase from digital marketing
Penguin Air, Plumbing & Electrical Client-verified
- Grew from a $13M business to $30M (2020 to 2023)
- $34M+ revenue generated from digital marketing in four years
- Digital marketing accounted for 50%+ of company revenue over four years
Lea Black Beauty Client-verified
- 28% Increase in User Engagement
- 335.5% Increase in Organic Revenue
- 4.9% Increase in Instagram Followers
- 28% Increase in Facebook New Page Likes
- 23.5% Increase in Followers Reached on Instagram
- 23.82% Increase in Organic Sessions
- 127.44% Increase
- $1,638.98
- 32.27% Increase in Revenue
- 99% Increase in Total Site Traffic
- 111% Increase in And New Users Have
Lethal Performance Client-verified
- 1,103% increase in revenue
- 456% increase in website traffic
- 14,213 first-page Google positions (up from 3,800)
- 479% increase in paid revenue with 124% increase in ad spend
- 923% growth in online sales over three years
- 167% Increase in Organic Traffic YoY
- 169% Increase in Organic Goal Conversions YoY
- 99% Increase in Keyword Rankings
- 106% Increase in Organic New Users
- 145% Increase in Revenue
- 332% Increase in Keyword Rankings
- 74% Increase in Organic Search Traffic
The Loken Group Client-verified
- 6.8% More Clicks
- 105% More Views
- 45% More Impressions
- 43% More Users
- 38% More Traffic
- 45% More Returning Users
- 44.07% More Traffic
- 17K new users
- 52.28% More Searches
Lowbrow Customs Client-verified
- Organic traffic +28% YoY within 6 weeks of launch
- Transactions and revenue +156% YoY
- "japanese snacks" from #9 to #2 (9,900 searches)
- "japanese subscription box" from #5 to #1 (1,600 searches)
- Recovered ranking for "Japanese snack box" after a drop
- Keywords in top 3 +63.16%
- Keywords in top 4-10 +71.43%
- Keywords in top 21-100 +118.31%
Low VA Rates Client-verified
- More than doubled organic traffic in a year
- Doubled traffic and leads
- 39% increase in YOY blog traffic
- 1,953% increase YOY in keyword traffic
- 928% increase in YOY website traffic
- 37% YoY increase in provider traffic
- Built thought leadership content
- Grew organic traffic to the content hub
- Improved rankings for competitive keywords
The Oaks Plastic Surgery Client-verified
- 1,066% ROI: $740,400 in online revenue from a $63,500 SEO budget
- Organic visits up from 35 to 1,397 per month for a brand-new practice
- 40 new keywords in the top 3 and 167 in the top 10
- Leads up from 0 to 15 conversions per month
- Online market share up from 0% to 8.81%
- 1,266% ROI: $319,050 in online revenue from a $23,350 SEO budget
- Online orders up from 38 to 344 per month
- Organic visits up from 1,517 to 3,073 per month
- Online market share up from 13.37% to 44.21%
- 24 new keywords in the top 3 and 28 in the top 10
- 2,577% ROI: $862,065 in online revenue from a $32,206 SEO budget
- Organic visits up from 20 to 1,370 per month
- Leads up from 14 to 110 calls and 0 to 7 web forms per month
- Online market share up from 4.80% to 78.80%
- 39 new keywords in the top 3 and 33 in the top 10
Dean McGee Eye Institute Client-verified
- 245% increase in Instagram followers
- 3X higher search ad CTR than industry average
- 46% increase in blog page views
- 112 leads in first month of search ads campaign
- 11% website lead conversion rate
- 801 leads from SEO in one year
- 50 Contacts in 2 Months
- 96% Reduction in Cost Per Lead
- 7K Clicks on Facebook Ads in 2 Months
Fit Club New York Client-verified
- +2,846% organic traffic
- +567% ranked keywords (645 to 4,301)
- +278% page-one rankings (40 to 151, Jan 2021 to June 2025)
- +269% organic traffic
- +48% page-one rankings (23 to 34)
- +164% ranked keywords (335 to 885, Jan 2018 to Dec 2023)
- +657% organic traffic
- +300% page-one rankings
- +432% ranked keywords
ArcStone Client-verified
- 51% increase in organic keywords
- 1,936.99% increase in organic traffic
- Domain Rating from 51 to 54
- 562% increase in organic keywords
- 577% increase in organic traffic
- Domain Rating from 37 to 42
- All-time high revenue
- 89% increase in organic traffic
- Domain Rating from 46 to 57
Search Solution Group Client-verified
- +40% inbound leads by Q1 2023
- +50% organic search traffic over six months
- +35% click-through rate after moving to responsive search ads
- +250% organic traffic
- +40% lead quality
- 5x return on investment
- 28 separate brand sites consolidated into a 2,201-page platform
- Where-to-buy tool linked to 200,000+ distributors
- Grew to 18+ locations and 2 additional markets (Raleigh, NC and Savannah, GA)
- Platinum Award winner for SEO
- Website built in 2015 and improved continuously since
CentralStar Cooperative Client-verified
- Online sales up 83.2% (Jan-Jun 2024 vs. the previous period)
- Online orders up 100.9%
- Organic search up 54.9%
- Session events up 66.6%
- Total users up 53.7%
- Engaged sessions up 45.6%
- Session events up 41.9%
- Organic search up 44.1%
- New users up 505% in one month
- Organic search traffic up 809.6%
- Engaged sessions up 681.2%
- Event count up 713.5%
Amacoil Client-verified
- Search visibility up 42.9% in the first 90 days
- Visitors up 7.2% and user sessions up 5.6%
- Session duration up 8.58%
- 7 of 20 tracked keywords improved
- Google Business Profile views up 75% in the first year
- Search engine visibility up 21%
- 1,400 keywords driving organic traffic
- Domain authority score up 6 points
- Custom Stud Master landing page became the #2 entry point, over 10% of traffic
Island Inn Client-verified
- Direct website bookings up 13% year over year
- 36% rise in contact form submissions
- 20% reduction in cost per acquisition
- 5% increase in organic traffic
- Bounce rate down 88%
- Average time on site up 49% and pages per session up 57%
- 400+ "Not Found" errors cut 90%
- 500 server errors cut 99%
- Organic traffic up 83% year over year within four months
- Organic revenue up 122% with no product or pricing changes
- Organic outpaced other channels by 25%+ in sessions, revenue and AOV
Squaremouth Client-verified
- 270% more revenue from ChatGPT in 6 months
- Search traffic up 78% while competitors lost 34.5% to AI Overviews
- $17M in incremental revenue recovered
- $9M from localization tests and $8M from technical SEO fixes
- Hreflang and metadata rules rebuilt across 25+ markets
Taco Bar Catering Client-verified
- Conversions and year-over-year revenue +250%
- Online orders and phone calls +85%
- 7,225+ items sold and 315+ online orders
- $105,700+ revenue generated by SEO
- Listed in the local 3-pack
- Conversions up 6x
- Ranked #1 in Orange County, within the top 3 results
- 33,000+ visits
- 458+ passes sold
- $747K+ revenue generated by SEO
- Conversions up 7x
- Year-over-year revenue +350%
- 35,150+ visits
- 458+ memberships
- $1.37M+ revenue generated by SEO
John H. Fisher, P.C. Client-verified
- Domain Rating grew from ~22 to ~36 (Ahrefs, Nov 2017 to mid-2022)
- Referring domains grew from ~110 to ~520
- Monthly leads grew from ~25 (2020) to ~110 (2022)
- Domain Rating grew from ~0 to ~37 (Ahrefs, 2016 to 2022)
- Referring domains grew from ~0 to ~580
- Organic new users grew from ~3,400 to ~10,000 per month at peak (2020 to 2022)
- Domain Rating grew from ~23 to ~31 (Ahrefs, 2020 to 2022)
- Referring domains grew from ~150 to ~400
- Organic leads grew from ~90 to ~590 per month (2020 to 2022)
Le Bledo Eatery Client-verified
- Google Business Profile views +28.5% YoY
- Engaged sessions +24.8%
- Website views +41.4% vs. the prior quarter
- Redesigned menu with sticky sidebar, allergy key and catering order forms
- Bing Ads clicks +124% (2022 vs. 2021)
- Bing Ads revenue +96.5% and transactions +80.5%
- Bing Ads viewable impressions +222%
- Users +236% since SEO began
- Page views +150%
- Bounce rate -13% YTD
- Page 1 for a top keyword within 2 months
Sunshine Supply Client-verified
- 46% traffic increase
- Average search positions reduced by 30%
- 47:1 ROI on the SEO program
- 31% increase in organic traffic
- 27% increase in search results clicks
- 40% improvement in website traffic
- 25% of website traffic coming from the blog
- 10% boost in conversion rates
Joe & Bella Client-verified
- 507% increase in page one keywords
- 328% increase in top-3 keyword rankings
- 14,731 keyword position improvements
- 511% increase in referring domains (602 to 3,675 in six months)
- 38% increase in top-10 keyword rankings
- 26% increase in top-3 keyword rankings
- 6% increase in organic clicks
- 281% increase in top-10 keyword rankings (12 months)
- 25% year-over-year increase in organic clicks
- 9,500% growth in AI Overview visibility
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