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Company lists · Data refreshed September 2026

Top 25 Marketplace SEO agencies based in Denver, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 105 companies tracked

RevenueBase identified 105 marketplace SEO agencies headquartered in Denver, United States as of September 2026 and tracks 643 professional contacts across them, including 179 with verified work emails. New York is the largest hub.

This list covers marketplace SEO agencies headquartered in Denver, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
105Companies
643Contacts tracked
179Verified emails
Unlock all 105 companies Free signup · no credit card · 500 free credits

The 25 largest marketplace SEO agencies based in Denver, United States

Ranked by team size
Top 25 of 105 marketplace SEO agencies based in Denver, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names marketplace SEO agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
FruitionIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-5055

“At Fruition, we don’t just follow the digital marketing trends-we set them.”

Source: company website · checked Sep 5, 2026
2
Juris DigitalIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202651-20053

“When law firms hit a plateau in their growth, they realize what got them here won’t take them to the next level.”

Source: company website · checked Sep 5, 2026
3
USERPPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 202651-20040

“uSERP is an SEO agency for high-growth and enterprise brands.”

Source: company website · checked Sep 5, 2026
4
51blocksIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-5033

“51Blocks offers small businesses and website owners unique solutions with a local friendly service.”

Source: company website · checked Sep 5, 2026
5
Clicks And ClientsIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-5033

“Clicks and Clients is a results-driven Digital Marketing Agency- specializing in pay-per-click, search engine optimization, social advertising and multi-variable testing.”

Source: company website · checked Sep 5, 2026
6
Real FIG Advertising MarketingIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-5020

“Real FiG Advertising + Marketing is a full-service marketing agency for established small to mid-sized businesses looking to grow through inbound lead generation and brand…”

Source: company website · checked Sep 5, 2026
7
Peaks Digital MarketingPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 20261-1020

“Peaks Digital Marketing helps small and medium sized businesses rank number one on Google using SEO, Omni-channel marketing and Adwords (PPC).”

Source: company website · checked Sep 5, 2026
8
The Xcite GroupIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-5020

“Digital marketing is both an art and a science, and it's always evolving.”

Source: company website · checked Sep 5, 2026
9
Boulder SEO MarketingIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202651-20019
Source: company website · checked Sep 5, 2026
10
TrioseoPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 20261-1017

“TrioSEO is a monthly SEO agency for B2B service providers, SaaS, & online businesses.”

Source: company website · checked Sep 5, 2026
11
IntergrowthPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-5012

“We help B2C businesses that see their brand as an asset get more customers through SEO and content marketing.”

Source: company website · checked Sep 5, 2026
12
Home Remodeler SEOPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-509

“Our team of SEO specialists consistently delivers outstanding results combining creative ideas with our vast experience.”

Source: company website · checked Sep 5, 2026
13
Nuclear Networking - By SymplerIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-509

“Beat Your Previous Agency’s Performance!”

Source: company website · checked Sep 5, 2026
14
Elevation MarketingPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-508

“Local Market Dominance for Home Service Contractors | SEO, PPC & AI Strategy Elevation Marketing™ builds brand omnipresence for home service contractors.”

Source: company website · checked Sep 5, 2026
15
Orange OutreachPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-508

“At Orange Outreach, we help US-based brands, startups, and marketing agencies strengthen their online presence through ethical SEO, high-quality backlinks, and editorial guest…”

Source: company website · checked Sep 5, 2026
16
Roundhouse ConsultingPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 20261-107

“Roundhouse Consulting is a boutique agency based out of Denver, Colorado, where we specialize in SEO, PPC and Social Media Advertising, Web Design and Graphic Design.”

Source: company website · checked Sep 5, 2026
17
Customer Scout, INCIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-505

“Customer Scout continues to earn 5-star reviews from our dealerships.”

Source: company website · checked Sep 5, 2026
18
Digital Nova, LLCIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 20261-105

“No complicated tools, no bloated staff, just digital experts working hand-in-hand with your team to drive performance.”

Source: company website · checked Sep 5, 2026
19
SemoptimizeIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 20261-105

“SEMoptimize is a digital marketing agency in Denver focused on delivering actual, tangible and tracked ROI performance for our partners.”

Source: company website · checked Sep 5, 2026
20
Tree Ring DigitalIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 20261-105

“Tree Ring Digital is a Denver based, digital marketing company offering an array of digital services ranging from website design and development and search engine optimization…”

Source: company website · checked Sep 5, 2026
21
Epidemic Marketing LLCIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 20261-104

“We at Epidemic Marketing are dedicated to helping you kick start your online presence and web visibility.”

Source: company website · checked Sep 5, 2026
22
Rathcore MarketingIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 20261-104

“Rathcore Marketing delivers ROI that hits hard.”

Source: company website · checked Sep 5, 2026
23
Newstar SEOPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-504

“NewStar SEO is a leading digital marketing agency that uses proven methods to get you to Page 1 of Google search results and the Google Maps Local 3-Pack.”

Source: company website · checked Sep 5, 2026
24
SerpwarsIndirect evidence
Denver, CO, United StatesHQ checked Sep 5, 202611-503

“SERPWARS Will Launch Your Digital Marketing into OUTERSPACE.”

Source: company website · checked Sep 5, 2026
25
Cooper MarketingPartial evidence
Denver, CO, United StatesHQ checked Sep 5, 20261-103

“We help CMOs & VPs of Marketing at B2B tech startups & scaleups rank on Google, grow organic search traffic, and fill pipeline by creating SEO-driven content.”

Source: company website · checked Sep 5, 2026

Showing 25 of 105 marketplace SEO agencies based in Denver, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 179 reachable decision-makers.

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Marketplace SEO agencies based in Denver, United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 300 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
71
11-50
30
51-200
4

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Denver, over 105 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among marketplace SEO agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Denver, United States whose own description of what they do matches “marketplace SEO agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among marketplace SEO agencies, and records with no verified work email. Companies headquartered outside Denver are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 179 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Marketplace SEO agencies by metro in the United States

Frequently asked

How many marketplace SEO agencies are there based in Denver, United States?

RevenueBase identified 105 marketplace SEO agencies headquartered in Denver, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Fruition, headquartered in Denver, tops this list with the largest team on record.

Which city has the most marketplace SEO agencies?

New York leads with 300 headquartered companies, followed by Los Angeles (186) and Houston (148).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 179 verified decision-maker contacts tracked across these 105 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 105 marketplace SEO agencies based in Denver, United States. Start with a free account, no credit card.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.

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