Businesses in Los Alamos, California

As of October 4, 2026, ListRiver's records show 144 active registered businesses in Los Alamos, California. 63% are LLCs.

From official California registry records, updated weekly. Most Los Alamos businesses are in Santa Barbara County. Look up a California business by name.

Businesses on record

144

Formed in the last 12 months

Formed in September

With a registered agent

99%

143 records

New Los Alamos businesses per month

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

Entity types

LLCs90 · 63%
Corporations29 · 20%
Other21 · 15%
Limited partnerships4 · 3%

Top ZIP codes

ZIP 93440143 · 99%
ZIP 907201 · 1%

Newest business names registered in Los Alamos

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This is a small sample, not the full list. To keep automated scrapers from copying our data, we only show a handful of records on public pages. Your downloaded list includes every matching business.

Business	City	Type	Formed
Name hidden	Los Alamos	LLC	Jan 2026
Name hidden	Los Alamos	LLC	Jan 2026
Name hidden	Los Alamos	Corporation	Jan 2026
Name hidden	Los Alamos	LLC	Jan 2026
Name hidden	Los Alamos	Corporation	Jan 2025
Name hidden	Los Alamos	Other	Jan 2025
Name hidden	Los Alamos	LLC	Jan 2025
Name hidden	Los Alamos	Other	Jan 2025
Name hidden	Los Alamos	LLC	Jan 2025
Name hidden	Los Alamos	LLC	Jan 2025
Name hidden	Los Alamos	LLC	Jan 2025
Name hidden	Los Alamos	Other	Jan 2025
Name hidden	Los Alamos	LLC	Jan 2025
Name hidden	Los Alamos	LLC	Jan 2025
Name hidden	Los Alamos	Other	Jan 2025
Name hidden	Los Alamos	Other	Jan 2025
Name hidden	Los Alamos	LLC	Jan 2025
Name hidden	Los Alamos	Corporation	Jan 2024
Name hidden	Los Alamos	Corporation	Jan 2024
Name hidden	Los Alamos	Other	Jan 2024
Name hidden	Los Alamos	LLC	Jan 2024
Name hidden	Los Alamos	LLC	Jan 2024
Name hidden	Los Alamos	LLC	Jan 2024
Name hidden	Los Alamos	LLC	Jan 2024
Name hidden	Los Alamos	LLC	Jan 2024

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Common questions about Los Alamos businesses

How many businesses are registered in Los Alamos, California?

ListRiver has 144 active registered businesses in Los Alamos, California on record as of October 4, 2026, from official California business registry data. Dissolved and defunct businesses are not counted.

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

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

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

4 businesses on record in Los Alamos, California were formed in the 12 months through September 2026.

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

LLCs are the most common: 90 of 144 businesses on record (63%), followed by Corporations with 29 (20%).

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 Los Alamos, California?

Use ListRiver's list builder to filter Los Alamos, 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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<div style="max-width:520px"><iframe src="https://listriver.com/embed/new-businesses/california/los-alamos" title="New businesses in Los Alamos, California by month" width="100%" height="370" style="border:0" loading="lazy"></iframe><p style="font:13px sans-serif;margin:4px 0 0">Source: <a href="https://listriver.com/business-lists/california/los-alamos">Businesses in Los Alamos, California</a>, ListRiver</p></div>

About this data

Counts come from official California business registry records on file with ListRiver, current as of October 4, 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.