Did you know that 68% of all online experiences begin with a search engine? For businesses, this statistic highlights the importance of investing in the best SEO companies to dominate search engine results. With countless SEO companies across the USA, choosing the right one can be challenging. That’s why we’ve curated a list of the top 10 SEO companies in USA in 2025, providing you with a detailed look at what makes these companies stand out. Whether you’re a small business, an e-commerce giant, or a nonprofit organization, these companies offer specialized services tailored to your needs.
1. Code and Design Group – Comprehensive SEO Solutions
Headquarters: Houston, TX
Established: 2015
Specialty: White-hat SEO, technical SEO, on-page optimization, local SEO, and off-page SEO
Code and Design Group is recognized as one of the best SEO companies in USA, offering a full spectrum of SEO services. We specialize in white-hat SEO strategies that not only improve rankings but also enhance user experience and ROI. Our data-driven approach and commitment to transparency have earned them trust across various industries.
Why Choose Code and Design Group?
- Proven track record of increasing ROI by over 200%
- Affordable pricing models for businesses of all sizes
- Comprehensive reports and regular updates
Reviews Highlight: Clients laud our “dedicated approach” and “exceptional results,” with a focus on building long-term partnerships.
2. First Page Sage – Thought Leadership-Based SEO
Headquarters: San Francisco, CA
Established: 2009
Specialty: Thought leadership-based SEO, content writing, lead generation
First Page Sage is a leader among SEO companies, specializing in thought leadership-based SEO. By combining high-quality content marketing with SEO strategies, they transform their clients’ websites into trusted industry resources. Their clientele includes big names like Cadence Design Systems, Logitech, and Nerdwallet.
Why Choose First Page Sage?
- Proven track record in B2B and B2C industries
- Comprehensive campaigns including technical SEO and detailed reporting
- Exceptional customer reviews with an average score of 4.8
Reviews Highlight: Clients praise their “excellent content” that leads to “provable lead generation,” although their onboarding process can take time.
3. Duffy Agency – Multilingual SEO
Headquarters: Dover, NH
Established: 2009
Specialty: International SEO, multilingual SEO content writing and marketing
For businesses with a global presence, Duffy Agency excels in multilingual SEO. Their expertise lies in creating nuanced strategies that resonate with diverse markets. They’ve worked with prestigious clients such as Napapijri and the United Nations World Food Programme.
Why Choose Duffy Agency?
- In-depth knowledge of international markets and search intent
- Proven success across industries like consumer goods and healthcare
Reviews Highlight: Clients describe their services as “ambitious” and “well-rounded,” with results that require time to materialize.
4. Boostability – White Label SEO
Headquarters: Lehi, UT
Established: 2009
Specialty: White label SEO, small business SEO
Boostability specializes in providing white label SEO services, making it an ideal partner for digital marketing agencies that lack in-house SEO capabilities. They also cater directly to small businesses looking to establish their online presence.
Why Choose Boostability?
- Affordable packages tailored for small businesses
- Scalable solutions for growing enterprises
Reviews Highlight: Clients appreciate their “professional and knowledgeable” team, though some mention high account manager turnover.
5. LocaliQ – Local SEO Experts
Headquarters: Woodland Hills, CA
Established: 2003
Specialty: Local SEO, Google Business Profile optimization
Local businesses seeking geotargeted SEO solutions will find LocaliQ’s expertise invaluable. They have extensive experience in industries such as real estate and home services, with past clients including Mr. Rooter and Central Washington University.
Why Choose LocaliQ?
- Specialization in location-specific keywords
- Wide array of services, including PPC and marketing automation
Reviews Highlight: Clients commend their “excellent web design” but note occasional issues with meeting deadlines.
6. Seller Interactive – Amazon SEO Specialists
Headquarters: Markham, Ontario
Established: 2012
Specialty: Amazon SEO, account management
Seller Interactive dominates the niche of Amazon SEO, helping e-commerce businesses optimize their presence on the platform. Their expertise extends to managing Amazon marketplace accounts and creating high-performing listings.
Why Choose Seller Interactive?
- Deep understanding of Amazon’s search algorithms
- Proven success in industries like cosmetics and food & beverage
Reviews Highlight: Clients describe their work as “impressive” and “high quality,” though communication could be improved.
7. Epsilon – Full-Service Enterprise Digital Marketing
Headquarters: Irving, TX
Established: 1969
Specialty: Enterprise digital marketing, traditional marketing
Epsilon offers enterprise-level SEO alongside comprehensive digital marketing solutions. Their data-driven approach ensures seamless integration across marketing campaigns.
Why Choose Epsilon?
- Trusted partner for global brands like Walgreens and Volvo
- Expertise in personalized messaging and customer insights
Reviews Highlight: Clients praise their “attentive project oversight,” though some note the services can be costly.
8. Marketing Eye – Technical SEO & Strategy
Headquarters: Atlanta, GA
Established: 2004
Specialty: Technical SEO, web design
Marketing Eye focuses on technical SEO and conversion-optimized website design, making them a top choice for businesses that produce their own content but need help with strategy and implementation.
Why Choose Marketing Eye?
- Strong emphasis on technical optimization
- Tailored solutions for industries like finance and logistics
Reviews Highlight: Clients describe their team as “competent and professional” with room for growth in employee training.
9. Clay Agency – Conversion Rate Optimization
Headquarters: San Francisco, CA
Established: 2016
Specialty: CRO, UI/UX design
Clay Agency combines UI/UX design with SEO to maximize conversion rates. Their research-driven approach ensures that every design choice is backed by data.
Why Choose Clay Agency?
- Focus on improving user experience and engagement
- Expertise in web design and brand strategy
Reviews Highlight: Clients highlight their “attention to detail” and “high-quality design” as standout features.
10. Aumcore – Voice and Mobile SEO
Headquarters: New York, NY
Established: 2010
Specialty: Voice search optimization, mobile SEO
Aumcore stays ahead of trends by specializing in voice and mobile search optimization. They help businesses adapt to mobile-first indexing and the rise of voice assistants like Alexa and Siri.
Why Choose Aumcore?
- Strong focus on emerging SEO trends
- Extensive experience with B2C and B2B industries
Reviews Highlight: Clients praise their “excellent” work and “well-rounded” team.
Final Words
Choosing the right SEO partner is crucial to achieving your digital marketing goals. Whether you need expertise in local SEO, technical optimization, or Amazon-specific strategies, this list of the best SEO companies in USA will help you make an informed decision. Each company brings unique strengths to the table, ensuring that there’s a perfect fit for every business. By partnering with one of these top SEO companies, you can take your online presence to new heights in 2025.
