// seo agency · St. Louis

St. Louis SEO Agency

SEO AUDIT SERVICES BACklink services

rank-monitor.livelive

// tracking

St. Louis

47 keywords · 12 SERPs

seo agency

#22

local seo services

#1—

best seo company

#34

technical seo

#56

200+

Ranking factors audited per page

15 yrs

Of search-algorithm operational history

5K+

Keywords moved into top-10 positions

F500

Clients alongside startups & agencies

~/seo.co/markets/st-louis

$ seo.co --target st-louis --strategy local

St. Louis SEO, run from a national bench.

Local pack rankings, Google Business Profile optimization, citation hygiene, and review-signal engineering for St. Louis-based businesses — operated by the same team that ranks Fortune 500 brands nationally.

// engineering methodology

How we engineer rankings.

A five-phase loop, repeated continuously. No black boxes — every step traceable to a measurable signal.

seo.co — process.ts

$ seo.audit()

Diagnose

200-point technical, content, and backlink audit. Core Web Vitals, crawl budget, schema, EAT signals — every lever measured before we touch a thing.

$ seo.strategy()

Cluster

Keyword universes mapped to topical authority pillars. Intent matched to content. Internal-link graph designed before a single page ships.

$ seo.execute()

Build

On-page implementation, schema rollout, content production, and white-hat link acquisition — coordinated across technical, editorial, and PR teams.

$ seo.measure()

Track

Position tracking, attribution modeling, conversion-funnel diagnostics. Weekly reports tied to revenue, not vanity metrics.

$ seo.optimize()

Iterate

Algorithm-update response within 48 hours. Competitive deltas surfaced in real time. Continuous remediation on the pages losing ground.

St. Louis SEO Company

SEO.Co is a team of professional SEO experts that use proven search engine optimization strategies to drive your business to succeed online. We help you build trust with potential customers, capture leads, and increase traffic and sales, both on and off-site.

Since 2010 we have been the St. Louis SEO company of choice for discerning businesses in Missouri and beyond. With an experienced team of SEO professionals, our digital marketing agency has managed over 2,000 websites, providing turnkey content marketing, digital marketing, web development and web design services for hundreds of businesses big and small.

As the St. Louis digital marketing agency of choice for both national and local SEO needs, we have helped Fortune 500 companies to small, local businesses to achieve improved rankings in the search engines.

robots.txt// crawl directives

 1# Engineered for budget, not just access
 2User-agent: *
 3Allow:      /
 4Disallow:   /admin/
 5Disallow:   /*?session=
 6 
 7User-agent: GPTBot
 8Allow:      /
 9 
10Sitemap: /sitemap_index.xml

SEO Experts in St. Louis

If you're looking for a St. Louis SEO company that can help your business grow, you've come to the right place. Our team of experienced professionals knows how to optimize your website and increase your search engine ranking, driving more traffic your way and helping you achieve success online.

We offer a variety of services that are tailored to meet your specific needs, and we'll work hard to make sure you're satisfied with the results.

SEO.co is the culmination of years of hard work by an impressive team of individuals. The firm has worked together for decades and brings outstanding experience and dedication to every project they start.

SEO.co stands out from competitors by using tried and true SEO workarounds, rather than spending money on overpriced social media advertisements. SEO.co specializes in inbound marketing and helps thousands of clients across the world. They stand out from competitors using their tried and true SEO workarounds.

If you want to enhance your online visibility, then a commitment to St. Louis search engine optimization (SEO) is a must.

More specifically, you need to emphasize:

lighthouse-report.json// page audit

Performance

100

Accessibility

Best Practices

100

SEO

Technical SEO

This is the least sexy part of SEO, but it’s arguably the most important. Technical SEO is all about establishing the foundation and ensuring you have all of the proper support mechanisms in place to be a successful St. Louis business. This includes things like navigation, linking, meta tags, website speed, HTML, etc.

schema-validator// structured-data status

Organization

valid

ProfessionalService

valid

FAQPage

valid

BreadcrumbList

valid

Article

valid

AggregateRating

valid

// ai-search visibility · GEO

Ranking is no longer just Google.

We track citation share across every major LLM-powered search interface. Client appearance rates across the surfaces our prospects actually use:

GPT

ChatGPT Search

82%citation share

PPL

Perplexity Pages

89%citation share

AIO

Google AI Overview

71%citation share

GEM

Gemini Search

64%citation share

CLD

Claude Citations

58%citation share

COP

Bing Copilot

73%citation share

// structured data

Schema-first because Google reads JSON, not paragraphs.

Rich results, knowledge panels, AI Overview citations, and LLM training data all key off structured markup. We deploy validated JSON-LD across every page, monitored for drift.

▹30+ schema types covered (Organization, Service, FAQ, HowTo, Article…)
▹Live Rich Results validation in CI
▹Schema audit included in every engagement

schema.json

 1{
 2  "@context": "https://schema.org",
 3  "@type": "ProfessionalService",
 4  "name": "SEO.co",
 5  "areaServed": "United States",
 6  "aggregateRating": {
 7    "@type": "AggregateRating",
 8    "ratingValue": "4.9",
 9    "reviewCount": "312"
10  }
11}

Keyword research

While keyword stuffing is certainly no longer a viable practice, the inclusion of natural, long-tail keywords is a must. To develop crisp copy that resonates with the right audience, you must perform high-level St. Louis keyword research.

gsc-coverage// index coverage · 30d

Indexed

1,842

Discovered

117

Excluded

Error

High-Quality Copy

Armed with the appropriate keyword research, you can invest in high-quality website copy. This includes both static copy on your web pages, as well as ongoing investments in blog content.

keyword-clusters.csv// cluster intent

technical seo audit4.4K/mo

KD 38

core web vitals optimization1.9K/mo

KD 24

schema markup implementation2.7K/mo

KD 31

internal linking strategy3.1K/mo

KD 42

site speed optimization8.8K/mo

KD 55

Backlinks

One of the most important elements of any St. Louis SEO strategy is the inclusion of backlinks. These are links that point from other websites to your own. The more links you have from authoritative domains, the more likely you are to see an increase in the rankings.

robots.txt// crawl directives

 1# Engineered for budget, not just access
 2User-agent: *
 3Allow:      /
 4Disallow:   /admin/
 5Disallow:   /*?session=
 6 
 7User-agent: GPTBot
 8Allow:      /
 9 
10Sitemap: /sitemap_index.xml

// core web vitals · field data

Page speed is a ranking signal. We engineer it like one.

Field-data Core Web Vitals from a typical client page after our engagement. Real users, real conditions, measured against Google's thresholds.

Good · 90+

Needs work · 50–89

Largest Contentful Paint

LCP

1.8s

score 94

Cumulative Layout Shift

CLS

0.03

score 98

Interaction to Next Paint

INP

120ms

score 91

// the difference

What “technical” actually means.

Capability

SEO.co

Typical SEO agency

Technical audit depth

200+ checks · weekly

Single annual audit

Schema markup

30+ types, CI-validated

Hand-rolled, often broken

Core Web Vitals

Engineered to <2.5s LCP

Recommendation, not implementation

Reporting cadence

Live dashboard + weekly

Monthly PDF

Algorithm response

48-hour playbook

Wait-and-see

Content + links + tech

Single coordinated team

3 separate vendors

// algorithm response log

Every algorithm update has a playbook.

We don't wait-and-see. The last five years of major Google updates and the engineering response we executed for client sites within 48 hours of confirmation.

2024March Core Updateimpact: AI-content devaluation
impact: AI-content devaluation
→ Manual byline audits, EEAT enrichment, schema author overhaul
2024Helpful Content Update v3impact: Site-wide quality signal
impact: Site-wide quality signal
→ Topical authority pruning, low-value page sunset playbook
2023October Core + SGEimpact: AI Overview rollout
impact: AI Overview rollout
→ Citation-shape content, FAQ schema density, listicle restructuring
2022Product Reviews + Helpful Contentimpact: Affiliate / thin content
impact: Affiliate / thin content
→ Original research investment, first-hand testing methodology
2021Page Experience + MUMimpact: Web Vitals as ranking factor
impact: Web Vitals as ranking factor
→ Performance engineering pipeline, Lighthouse CI rollout

// operating stack

The platforms we run.

Six surfaces, dozens of tools, one team trained to read every signal each one produces. We don't pick favorites — we instrument everything.

Crawl & Audit

Screaming Frog
Sitebulb
Botify
JetOctopus

Backlinks

Ahrefs
Semrush
Majestic
Moz Pro

Google Search Console
Bing Webmaster
Yandex Webmaster

Analytics

GA4
BigQuery
Looker Studio
Mixpanel

Performance

PageSpeed Insights
WebPageTest
Lighthouse CI
Calibre

AI Search

Perplexity Pages
ChatGPT Search
Profound
AthenaHQ

// frequently asked

Common questions

01On-page Analysis.

By analyzing individual pages and keywords using Google Analytics, Google Search Console (reviewing accelerated mobile pages), Core Web Vitals (reviewing page speed) and other keyword research tools, we create a detailed roadmap that is industry agnostic and fully-repeatable for ranking in search engines.

02Complete Content Audit.

Your on-site content audit will perform keyword research to compare all the pages of your site, taking into account content quality, duplicate content, keyword stuffing and keyword cannibalization issues that might be hurting your rankings in search engine results pages (SERPs).

03Holistic Backlink Audit.

Understand impact of site-wide and individual web pages with a comprehensive look at backlink diversity, link velocity, anchor text variability, TLD diversity, internal links and internal link structure.

04Determine Link-Worthy Assets.

We find the best content assets on your website, worthy of inbound mentions and backlinks. If you don't have any or your content is lacking, our editorial team can help to beef-up your content assets.

05Find Publishers that Match Your Strategy.

We source publishers with relevance and authority and pitch them content ideas that include backlinks and references back to your website.

06Write The Content.

We draft your written content, including relevant backlinks and anchor text that aligns with our keyword research tool analysis (e.g. title tags, meta tags, keyword density, etc.). We then get publisher approval to get the content published.

07Backlink Reporting.

You receive regular backlink reports included in your standard monthly SEO work reports.

08On-page Analysis.

09Complete Content Audit.

10Holistic Backlink Audit.

11Determine Link-Worthy Assets.

12Find Publishers that Match Your Strategy.

We source publishers with relevance and authority and pitch them content ideas that include backlinks and references back to your website.

13Write The Content.

14Backlink Reporting.

You receive regular backlink reports included in your standard monthly SEO work reports.

15On-page Analysis.

16Complete Content Audit.

17Holistic Backlink Audit.

18What experience do you have with search engine optimization (SEO)?

While our company has been around for over 12 years, members of our team have been optimizing websites for over two decades. We are confident we can help your business grow.

19What are all the SEO services you offer?

We offer a variety of services, including keyword research, on-page optimization, backlinking, and more. We'll work with you to create a custom plan that meets your specific needs.

20Do you offer any guarantees?

No. Any SEO company that offers guarantees on ranking is either doing something black hat or is not being fully forthright.

21How long will it take to see results from your SEO efforts?

It typically takes 3-6 months to see significant results from SEO efforts. However, we often see smaller changes much sooner than that.

22What is your pricing structure?

We offer a variety of pricing options to suit your needs and budget. Contact us today to learn more! Or, feel free to read our SEO pricing guide.

23Do you offer any discounts?

We offer a variety of discounts, including discounts for prepaying and for referrals. Our white label SEO reseller partners can also expect to see discounts on our services. Contact us today to learn more!

24What type of local SEO services do you offer?

We provide Google My Business (GMB) optimization as well as local link citation building for advanced local SEO rankings.

// ready to engage

Ready to rank in St. Louis?

Get a city-specific proposal from the team that's engineered top rankings in St. Louis and 40+ other US cities.

Get a proposal Browse services

St. Louis SEO Agency

St. Louis SEO, run from a national bench.

How we engineer rankings.

St. Louis SEO Company

SEO Experts in St. Louis

Technical SEO

Ranking is no longer just Google.

Schema-first because Google reads JSON, not paragraphs.

Keyword research

High-Quality Copy

Backlinks

Page speed is a ranking signal. We engineer it like one.

What “technical” actually means.

Every algorithm update has a playbook.

The platforms we run.

Common questions

Other cities we serve

Ready to rank in St. Louis?