Local supply and market context for residential assisted living in Millbrae.
Updated July 2026
Millbrae, CA has 12 licensed assisted living homes (448 beds, averaging 37.3 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
12
Millbrae
Licensed beds
448
total
Avg home size
37.3 beds
per home
County opportunity
6.4/10
Moderate
The Millbrae assisted living market
Millbrae has 12 licensed assisted living homes totaling 448 beds — an average of 37.3 beds per home, skewing toward 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 Millbrae, CA?
Millbrae has 12 licensed assisted living homes with about 448 total beds.
Is Millbrae a good place to open an assisted living home?
Millbrae 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 12 homes.
What county is Millbrae in?
Millbrae is in San Mateo County, California.
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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.