Looking to enhance your website’s visibility and drive consistent organic traffic? You’re in the right place. Our curated list of Top SEO Firms in the USA features industry-leading agencies backed by verified client reviews, transparent service offerings, and clear pricing insights.
Whether you’re a startup aiming to build your online presence or an established enterprise focused on scaling growth, these SEO experts can help you:
- Improve your search engine rankings across Google, Bing, and AI-powered search engines.
- Develop and optimize high-quality content that attracts and converts your target audience.
- Build strong backlink profiles to increase authority and visibility.
- Implement technical SEO strategies to ensure your site is fast, mobile-friendly, and easy to crawl.
- Measure ROI with data-driven insights and transparent reporting.
Each agency in our list offers a proven track record of success—helping businesses of all sizes boost organic reach, generate qualified leads, and achieve measurable digital marketing results.
List of the Top 10 SEO Companies in USA
1. EL-Digital
EL-Digital is a prominent digital marketing agency based in the USA, specializing in SEO, social media, and paid campaigns. With over 9 years of experience, they have a proven track record of helping businesses enhance their online presence and drive growth
“The best digital marketing agency in the industry, hands down”
Mal Gilli, CTO at Fivestar Tangence in the UK. They offer end-to-end data consulting, AI solutions, and digital transformation services.
2. WebFX (Harrisburg, PA)
Overview & specialities
- WebFX offers full-service SEO with a strong emphasis on content, technology, and measurable ROI. WebFX+1
- They highlight their “AI + human” blend: proprietary tools (RevenueCloudFX), large content team (30+), dedicated account teams, and experience across 200+ industries. WebFX
- They also promote “OmniSEO™” for visibility in AI-driven search (LLMs, ChatGPT style) beyond traditional Google SERPs. WebFX+1
Key service offerings
- SEO audit + custom strategy (on-page, off-page, technical) WebFX+1
- Content creation & optimization (they emphasise that content is written by humans, not AI) WebFX+1
- Technical SEO / website health / speed / indexing etc. WebFX
- Link building / off-page brand authority work. WebFX
- Full funnel: tracking not just traffic/rankings but leads/sales and tying to ROI via their tools. WebFX
Noteworthy details
They emphasise transparency, dedicated teams, and advanced tech investment.
Their published starting price for SEO plans is $3,000/month (for businesses looking to grow) as a baseline. WebFX
3. OuterBox (Copley, OH)
Overview & specialities
- OuterBox positions itself strongly for e-commerce SEO, but also covers general SEO. OuterBox+1
- In-house team (writers, devs, designers) with experience across major CMS/eCommerce platforms (Shopify, Magento, WooCommerce) for content + technical integration. OuterBox+1
Key service offerings
- Keyword research, analytics setup, title/meta tag optimization, technical SEO, speed optimisation, link building, content editing & creation. OuterBox
- Content development & copywriting specifically for e-commerce product/category pages. OuterBox+1
- SEO consulting services including audits + strategy for traditional + AI-driven search. OuterBox
Noteworthy details
They emphasise transparency (reporting, task tracking) and CMS-specific expertise.
Their SEO packages list “Basic SEO” for ~$2,000/month in the sample basic package. OuterBox
4. Victorious (San Francisco, CA)
Overview & specialities
- Victorious emphasises ROI-driven SEO: “convert your organic traffic into ROI” and has served 600+ brands. Victorious
- They focus on strategic SEO execution, emphasising high-impact wins (e.g., moving from position 50 to #1 in a case). Victorious
Key service offerings
- Full SEO campaign service: onboarding, implementation, iteration of SEO tactics. Victorious
- While their website is less detailed publicly (than the others) in listing every sub-service, their positioning suggests strong content + link + technical mix.
Noteworthy details
They emphasise transparency and focused execution.
Review count (211+), awards (183+) show broad external validation. Victorious
5. Ignite Visibility (San Diego, CA)
Overview & specialities
Ignite Visibility markets itself as an award-winning full-service digital marketing and SEO agency: SEO + paid media + social + creative. Ignite Visibility
A notable differentiator: they have introduced “Generative Engine Optimization (GEO)” for AI-powered search visibility (beyond traditional SERPs) — a leading-edge area. PRWeb+1
Key service offerings
SEO: national, local, enterprise, multi-location campaigns. Ignite Visibility+1
Content marketing offerings: thought-leadership ghostwriting, video script + short form content, whitepapers/ebooks etc. Ignite Visibility
Local SEO: Google Business Profile optimisation, location-specific landing pages, review generation & monitoring. Ignite Visibility
Noteworthy details
Strong emphasis on ROI, transparent reporting, being a partner rather than just vendor. Ignite Visibility
They are early adopters of AI/LLM-driven search strategy (GEO) which is somewhat more forward-looking than many firms.vice.
6. Straight North (Chicago, IL)
Overview & specialities
- Straight North is a USA-based SEO agency with 25+ years of experience. They focus on local, national, e-commerce and enterprise SEO. Straight North+1
- They emphasise transparency, collaboration, customised strategy and full-time in-house team. Straight North
Key service offerings
- Keyword strategy, content creation/optimization, link acquisition/backlink strategy, technical SEO audits. Straight North
- Local SEO: for multi-location franchises/clients — Google Business Profile, citations, local landing pages. Straight North
Noteworthy details
Emphasis on ROI-driven campaign and end-to-end SEO services (rather than just content).
They emphasise “your last agency” type messaging: identifying clients dissatisfied with prior agency. Straight North
7. Searchbloom (Draper, UT)
Overview & Specialities
Searchbloom specializes in ROI-focused SEO and PPC services with a strong emphasis on “Partner Value.” They focus on building long-term relationships and measurable growth.
Searchbloom
Their “Partner-Based Performance” model ensures full transparency and continuous optimization for sustained organic results.
Key Service Offerings
- Local & eCommerce SEO
- Technical site audits and SEO roadmaps
- Conversion tracking and analytics setup
- Content optimization and link outreach campaigns
Noteworthy Details
Detailed monthly performance reporting and dedicated project managers.
97% client retention rate, according to verified Clutch reviews.
8. Sure Oak (Brooklyn, NY)
Overview & Specialities
Sure Oak is an SEO agency focusing on long-term organic growth through strategic link-building and content-driven campaigns.
Sure Oak
They emphasize sustainable SEO with white-hat tactics and measurable KPIs.
Key Service Offerings
- Keyword strategy & competitor analysis
- Link-building outreach campaigns
- Content creation for blogs and landing pages
- Technical SEO audits
Noteworthy Details
Ideal for mid-sized businesses seeking sustainable, high-quality growth.
Featured in Moz and Search Engine Land for ethical link-building practices.
9. KlientBoost (Costa Mesa, CA)
Overview & Specialities
KlientBoost combines creative content strategy with performance-driven SEO and PPC. They’re known for blending CRO (Conversion Rate Optimization) with SEO to maximize ROI.
KlientBoost
Their creative tone and data transparency make them stand out among modern agencies.
Key Service Offerings
- SEO & content optimization
- Landing page design and A/B testing
- Paid media management (Google Ads, Meta Ads)
- Performance tracking and analytics
KlientBoost (Costa Mesa, CA)
Transparent pricing and month-to-month engagement models.
Strong design and CRO focus makes them ideal for startups and SaaS.
10. Titan Growth (San Diego, CA)
Overview & Specialities
Titan Growth is a full-service agency and certified Google Premier Partner specializing in SEO and paid media. Their proprietary TitanBOT® technology simulates search engine crawling for better optimization.
Titan Growth
They focus on enterprise-level technical SEO and measurable ROI.
Key Service Offerings
- Enterprise SEO campaigns
- Paid search & display advertising
- Technical audits & Core Web Vitals optimization
- Content optimization and schema implementation
Noteworthy Details
- Their TitanBOT® is a proprietary advantage for large-scale clients.
- Clients include Fortune 500 and leading eCommerce brands.
Summary & Comparison – Focus on Content
When comparing these firms from a content perspective (since you’re especially interested in content/offerings), here are a few take-aways:
- El-Digital: Strongest content capabilities (large in-house team, deep content + ROI tracking + AI insights)
- Ignite Visibility: Very strong in content + thought leadership + multi-format content (whitepapers, video scripts)
- OuterBox: Good content focus especially for e-commerce (product/category copy, CMS-specific adaptation)
- SEO Brand: (Not in this list of five but if included) emphasises “sales oriented content marketing” and link-earning content.
- Straight North & Victorious: Solid content + SEO mix, but less explicitly emphasised as content-only; more holistic SEO.
FAQs
1. How do I choose the best SEO agency for my business?
Look for an agency with verified client reviews, transparent reporting, and proven case studies. Check if they specialize in your industry and can clearly.
2. How much do SEO services cost in the USA?
SEO pricing varies depending on your goals and website size. On average:
Enterprise SEO: $10,000+/month
The best agencies provide flexible plans and measurable ROI.
Small business SEO: $1,000–$3,000/month
Mid-size or national campaigns: $3,000–$7,000/month
3. How long does it take to see SEO results?
Typically, noticeable improvements appear within 3–6 months, but sustainable SEO success often takes 6–12 months. It depends on your website’s current state, competition, and content quality. SEO is a long-term investment that compounds over time.
4. Do SEO companies create content too?
Yes! Many top SEO firms offer content strategy, blog writing, and optimization as part of their packages. Quality content helps attract backlinks, improve keyword relevance, and engage your target audience — all key ranking factors.forms optimally, and stays up-to-date with the latest technologies and operating system updates.
5 Can SEO really increase my sales?
Absolutely. SEO doesn’t just boost traffic — it attracts the right audience. With optimized content, strong keyword targeting, and improved site experience, your visitors are more likely to convert into customers.
