Millbrae receives the higher standardized Area Score. That reflects AreaProfile's weighting, not a judgment about which place is better to live in.
Signals
Millbrae
San Mateo
Opportunity
67 · Top 28%
vs67 · Top 28%
Growth
52 · Top 46%
vs31 · Bottom 19%
Climate
89 · Top 8%
vs89 · Top 8%
Physical resilience
37 · Bottom 30%
vs37 · Bottom 30%
Housing affordability
41 · Bottom 5%
vs41 · Bottom 5%
Access
99 · Top 8%
vs99 · Top 8%
Economic stability
69 · Top 32%
vs68 · Top 33%
Measured values
| Metric | Millbrae | San Mateo | Source period |
|---|---|---|---|
| Population | 22,689 | 103,105 | 2024 ACS 5-Year |
| Median household income | $163,476 | $153,504 | 2024 ACS 5-Year |
| Per capita income | $78,551 | $84,247 | 2024 ACS 5-Year |
| Population density | 6,941/sq mi | 8,497/sq mi | 2024 ACS 5-Year |
| Median home value | $1,934,900 | $1,618,700 | 2024 ACS 5-Year |
| Median gross rent | $3,272 | $3,077 | 2024 ACS 5-Year |
| Homeownership rate | 60.8% | 49.9% | 2024 ACS 5-Year |
| Unemployment rate | 3.6% | 3.6% | June 2026 |
| Employment change (year over year) | -0.9% | -0.9% | June 2026 |
| Bachelor's degree or higher | 52.7% | 57.8% | 2024 ACS 5-Year |
| Poverty rate | 6.0% | 8.2% | 2024 ACS 5-Year |
| Housing units permitted (12 months) | 187 | 98 | 12 months ending July 2026 |
| Permits per 1,000 residents | 8.2 | 1.0 | 12 months ending July 2026 |
| Permit change (year over year) | -47.5% | -34.7% | 12 months ending July 2026 |
| Average July high | 73°F | 73°F | 1991-2020 Normals |
| Average January low | 45°F | 45°F | 1991-2020 Normals |
| Annual precipitation | 19.6" | 19.6" | 1991-2020 Normals |
| Distance to major airport | 2 mi | 5 mi | NASR current cycle |
| Average commute | 31.4 min | 28.6 min | 2024 ACS 5-Year |
| Median age | 43.7 | 38.3 | 2024 ACS 5-Year |
| Public schools | 5 | 19 | 2024-25 school year |
| Students per teacher | 22.30 | 20.71 | 2024-25 school year |
| Free or reduced-price lunch eligibility | 18.2% | 37.9% | 2024-25 school year |
A bolded value is the more favorable of the two where the metric has a clear direction. Metrics like population and density have no inherent better or worse and are shown unweighted.
Physical risk tradeoff
Millbrae
Elevated or high exposure: earthquake, inland flooding.
San Mateo
Elevated or high exposure: earthquake, inland flooding.
Full profiles: Millbrae, CA · San Mateo, CA · How this is calculated: methodology