Businesses in Alamo, California

As of October 12, 2026, ListRiver's records show 2,219 active registered businesses in Alamo, California. 62% are LLCs.

From official California registry records, updated weekly. Most Alamo businesses are in Contra Costa County. Look up a California business by name.

Businesses on record
2,219
Formed in the last 12 months
134
Formed in September
0
With a registered agent
98%
2,183 records

New Alamo businesses per month

0100200Oct 2024: 1Oct 24Nov 2024: 0Dec 2024: 1Jan 2025: 1992025Feb 2025: 1Mar 2025: 0Apr 2025: 0May 2025: 1Jun 2025: 0Jul 2025: 0Aug 2025: 2Sep 2025: 1Oct 2025: 0Nov 2025: 1Dec 2025: 0Jan 2026: 1242026Feb 2026: 0Mar 2026: 0Apr 2026: 1May 2026: 2Jun 2026: 0Jul 2026: 0Aug 2026: 6Sep 2026: 0

Businesses on record by formation month, through September 2026. Monthly California new-business reports

Entity types

  • LLCs1,385 · 62%
  • Corporations542 · 24%
  • Other165 · 7%
  • Limited partnerships125 · 6%
  • Nonprofits2 · 0%

Top ZIP codes

Newest business names registered in Alamo

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BusinessCityTypeFormed
Name hiddenAlamoCorporationAug 2026
Name hiddenAlamoLLCAug 2026
Name hiddenAlamoLLCAug 2026
Name hiddenAlamoCorporationAug 2026
Name hiddenAlamoLLCAug 2026
Name hiddenAlamoLLCAug 2026
Name hiddenAlamoNonprofitMay 2026
Name hiddenAlamoLLCMay 2026
Name hiddenAlamoLLCApr 2026
Name hiddenAlamoCorporationJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoCorporationJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoOtherJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoLLCJan 2026
Name hiddenAlamoOtherJan 2026

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Common questions about Alamo businesses

How many businesses are registered in Alamo, California?

ListRiver has 2,219 active registered businesses in Alamo, California on record as of October 12, 2026, from official California business registry data. Dissolved and defunct businesses are not counted.

How many new businesses were formed in Alamo, California in September 2026?

0 businesses on record in Alamo, California were formed in September 2026.

How many new businesses opened in Alamo, California in the last 12 months?

134 businesses on record in Alamo, California were formed in the 12 months through September 2026.

What is the most common type of business in Alamo, California?

LLCs are the most common: 1,385 of 2,219 businesses on record (62%), followed by Corporations with 542 (24%).

Where does this data come from?

From California'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 Alamo, California?

Use ListRiver's list builder to filter Alamo, California 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 California 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.