City in San Mateo County, California · 3.3 sq mi · 6,980 people per sq mi
About 23,000 people live in Millbrae. The typical household earns $163,476, and the median resident is 43.7 years old.
2026 projection
From 23,138 in 2020
Poverty rate 5.97%
Men 41.9 · Women 46.6
1880–2026
22,814
2026 projection
1.4% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1880–2026
22,814
2026 projection
1.4% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 22,814 | -55 | 0.24% |
|---|---|---|---|
| 2025 | 22,869 | -49 | 0.21% |
| 2024 | 22,918 | +405 | 1.80% |
| 2023 | 22,513 | +365 | 1.65% |
| 2022 | 22,148 | -175 | 0.78% |
| 2021 | 22,323 | -815 | 3.52% |
| 2020 | 23,138 | +260 | 1.14% |
| 2019 | 22,878 | -211 | 0.91% |
| 2018 | 23,089 | -90 | 0.39% |
| 2017 | 23,179 | -60 | 0.26% |
Showing 10 of 25 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 227 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 17 residents
53% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 53% | 56% | 50% |
| Never married | 30% | 33% | 28% |
| Divorced | 9% | 7% | 11% |
| Widowed | 6% | 3% | 10% |
| Separated | 1% | <1% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau