Local supply and market context for residential assisted living in San Mateo.
Updated July 2026
San Mateo, CA has 60 licensed assisted living homes (1,160 beds, averaging 19.3 per home). It sits in San Mateo County, a moderate RAL market scoring 6.4/10, with 57,623 seniors 75+ growing 8.7%.
Licensed homes
60
San Mateo
Licensed beds
1,160
total
Avg home size
19.3 beds
per home
County opportunity
6.4/10
Moderate
The San Mateo assisted living market
San Mateo has 60 licensed assisted living homes totaling 1,160 beds — an average of 19.3 beds per home, a mix of small homes and larger communities. As part of San Mateo County, it draws on a 75+ population of 57,623 growing 8.7%, with a senior median income of $103,766. See the full San Mateo County market or all California top markets.
Frequently asked questions
How many assisted living homes are in San Mateo, CA?
San Mateo has 60 licensed assisted living homes with about 1,160 total beds.
Is San Mateo a good place to open an assisted living home?
San Mateo is in San Mateo County, which scores 6.4/10 (Moderate) on RAL Market Scout; its 75+ population is growing 8.7%. Current local supply is 60 homes.
What county is San Mateo in?
San Mateo is in San Mateo County, California.
Evaluate a San Mateo site
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Sources: Home and bed counts from the California licensing roster (RAL Market Scout pipeline). County demand, growth, and income from U.S. Census ACS. Snapshot: 2026-07. Informational only — not legal, financial, or investment advice.