Businesses in Adams County, Colorado

As of October 12, 2026, ListRiver's records show 54,640 active registered businesses in Adams County, Colorado, the 8th most among Colorado counties. 82% are LLCs. 889 were formed in September 2026. That is 6% of all Colorado businesses on record.

From official Colorado registry records, updated weekly. Look up a Colorado business by name.

Businesses on record
54,640
Formed in the last 12 months
11,298
Formed in September
889
With a phone number
6%
3,054 records

New Adams County businesses per month

07501,500Oct 2024: 426Oct 24Nov 2024: 336Dec 2024: 339Jan 2025: 5672025Feb 2025: 421Mar 2025: 466Apr 2025: 449May 2025: 379Jun 2025: 374Jul 2025: 325Aug 2025: 826Sep 2025: 809Oct 2025: 806Nov 2025: 745Dec 2025: 824Jan 2026: 1,1452026Feb 2026: 858Mar 2026: 1,126Apr 2026: 1,082May 2026: 984Jun 2026: 895Jul 2026: 985Aug 2026: 959Sep 2026: 889

Businesses on record by formation month, through September 2026. Monthly Colorado new-business reports · Get the list of 889 new businesses formed in September 2026

Entity types

  • LLCs44,767 · 82%
  • Corporations6,884 · 13%
  • Nonprofits2,503 · 5%
  • LLPs204 · 0%
  • Limited partnerships192 · 0%
  • Other90 · 0%

Top cities

Top ZIP codes

Newest business names registered in Adams County

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BusinessCityTypeFormed
Name hiddenCommerce CityLLCOct 2026
Name hiddenDenverLLCOct 2026
Name hiddenCommerce CityLLCOct 2026
Name hiddenAuroraLLCOct 2026
Name hiddenAuroraLLCOct 2026
Name hiddenBroomfieldLLCOct 2026
Name hiddenWestminsterLLCOct 2026
Name hiddenThorntonLLCOct 2026
Name hiddenDenverLLCOct 2026
Name hiddenThorntonLLCOct 2026
Name hiddenCommerce CityLLCOct 2026
Name hiddenCommerce CityLLCOct 2026
Name hiddenAuroraLLCOct 2026
Name hiddenDenverLLCOct 2026
Name hiddenCommerce CityLLCOct 2026
Name hiddenThorntonLLCOct 2026
Name hiddenBrightonLLCOct 2026
Name hiddenDenverLLCOct 2026
Name hiddenThorntonLLCOct 2026
Name hiddenWestminsterLLCOct 2026
Name hiddenDenverLLCOct 2026
Name hiddenDenverLLCOct 2026
Name hiddenNorthglennLLCOct 2026
Name hiddenBroomfieldLLCOct 2026
Name hiddenDenverLLCOct 2026

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Common questions about Adams County businesses

How many businesses are registered in Adams County, Colorado?

ListRiver has 54,640 active registered businesses in Adams County, Colorado on record as of October 12, 2026, from official Colorado business registry data. Dissolved and defunct businesses are not counted.

How many new businesses were formed in Adams County, Colorado in September 2026?

889 businesses on record in Adams County, Colorado were formed in September 2026.

How many new businesses opened in Adams County, Colorado in the last 12 months?

11,298 businesses on record in Adams County, Colorado were formed in the 12 months through September 2026.

What is the most common type of business in Adams County, Colorado?

LLCs are the most common: 44,767 of 54,640 businesses on record (82%), followed by Corporations with 6,884 (13%).

Where does this data come from?

From Colorado's official business registry. ListRiver loads each new state file, standardizes it, removes duplicates and updates its database weekly. Email and industry details are added from SMBCredit.net where available.

How do I get a list of businesses in Adams County, Colorado?

Use ListRiver's list builder to filter Adams County, Colorado businesses by entity type, formation date, industry and contact details, see the exact count and price, and download a CSV. Every list includes monthly refresh files.

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About this data

Counts come from official Colorado business registry records on file with ListRiver, current as of October 12, 2026. They include businesses that are active on the state register; dissolved and defunct entities are excluded. Contact details are added from SMBCredit.net where available. Formation months reflect the registration date the state reports. See the methodology for sources, update schedules and known limits.