Demographics of Millbrae city, California

Millbrae city, California had 22,869 people on July 1, 2025, by the Census Bureau’s estimate: −269 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Millbrae city, in four figures

22,869
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 22,689 ±27.; −1.2%
Change since July 2020: −269 people.; 43.7 ±1.8
Median age: ACS 2020–⁠2024.; $163,476 ±$11,394
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Millbrae city, California's population shrank 1.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Millbrae city, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — incorporated places and New England towns

About this chart

The figures

Millbrae city, California's population shrank 1.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Millbrae city, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	23,138	100.0	100.0
2021	22,323	96.5	100.2
2022	22,148	95.7	100.7
2023	22,513	97.3	101.6
2024	22,918	99.0	102.5
2025	22,869	98.8	103.1

Population of Millbrae city, California on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	23,138	—
2021	22,323	−815
2022	22,148	−175
2023	22,513	+365
2024	22,918	+405
2025	22,869	−49

Age, 2020–2024

The median age is 43.7 ±1.8: for men 41.9 ±1.5 and for women 46.6 ±3.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Millbrae city by age, ACS 2020–2024
Age	People	Share	California	United States
Under 5	1,312 ±246	5.8% ±1.1	5.5% ±<0.1	5.6% ±<0.1
5 to 17	3,010 ±347	13.3% ±1.5	16.5% ±<0.1	16.3% ±<0.1
18 to 24	1,515 ±305	6.7% ±1.3	9.1% ±<0.1	9.1% ±<0.1
25 to 44	5,795 ±435	25.5% ±1.9	28.7% ±<0.1	26.9% ±<0.1
45 to 64	6,458 ±516	28.5% ±2.3	24.6% ±<0.1	24.8% ±<0.1
65 and over	4,599 ±434	20.3% ±1.9	15.7% ±<0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $163,476 ±$11,394, and income per person $78,551 ±$4,425, in 2024 dollars. The median is $99,122 ±$310 in California and $80,734 ±$166 in the United States.

Households by income

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Households in Millbrae city by income, ACS 2020–2024
Household income	Households	Share	California	United States
Under $25,000	625 ±184	7.7% ±2.2	12.5% ±0.1	14.6% ±<0.1
$25,000 to $49,999	734 ±236	9.0% ±2.9	13.3% ±0.1	16.7% ±<0.1
$50,000 to $74,999	673 ±176	8.3% ±2.1	13.0% ±0.1	15.5% ±<0.1
$75,000 to $99,999	504 ±118	6.2% ±1.4	11.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	1,196 ±205	14.7% ±2.4	17.8% ±0.1	17.5% ±<0.1
$150,000 to $199,999	1,164 ±203	14.3% ±2.4	11.3% ±0.1	9.6% ±<0.1
$200,000 or more	3,225 ±275	39.7% ±3.0	20.5% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Millbrae city by age, ACS 2020–2024
Age	Below poverty	Rate	California	United States
All ages	1,340 ±383	6.0% ±1.7	12.0% ±0.1	12.5% ±0.1
Under 18	151 to 469	3.6% to 10.9%	15.0% ±0.1	16.1% ±0.1
18 to 59	655 ±206	5.4% ±1.7	11.0% ±0.1	11.6% ±0.1
60 and over	375 ±136	6.2% ±2.2	11.5% ±0.1	11.0% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Housing, 2020–2024

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Housing in Millbrae city, ACS 2020–2024
Measure	Millbrae city	California	United States
Housing units	8,705 ±402	14,644,735 ±1,665	143,775,355 ±10,234
Occupied	93.3% ±5.8	92.5% ±0.1	89.9% ±0.1
Vacant	6.7% ±2.3	7.5% ±0.1	10.1% ±0.1
Owner occupied	60.8% ±2.9	55.9% ±0.3	65.2% ±0.3
Renter occupied	39.2% ±3.0	44.1% ±0.2	34.8% ±0.1
Median home value	$1,934,900 ±$91,218	$734,700 ±$1,307	$332,700 ±$236
Median gross rent	$3,272 ±$163	$2,036 ±$5	$1,413 ±$2
Median year built	1962 ±2	1976 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Millbrae city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	California	United States
Hispanic or Latino	3,158 ±577	13.9% ±2.5	40.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	6,680 ±691	29.4% ±3.0	33.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	61 to 323	0.3% to 1.4%	5.2% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	10,914 ±839	48.1% ±3.7	15.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 45	0% to 0.2%	0.3% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	152 to 704	0.7% to 3.1%	0.3% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 576	0% to 2.5%	0.6% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,053 ±261	4.6% ±1.2	4.4% ±<0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Millbrae city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	California	United States
Born in the state	11,005 ±674	48.5% ±3.0	56.5% ±0.1	57.3% ±<0.1
Born in another state	2,024 ±266	8.9% ±1.2	15.0% ±0.1	26.9% ±<0.1
Born a citizen outside the states	402 ±142	1.8% ±0.6	1.5% ±<0.1	1.7% ±<0.1
Born abroad	9,258 ±642	40.8% ±2.8	27.0% ±0.1	14.1% ±<0.1
Naturalized citizens	6,293 ±509	27.7% ±2.2	14.7% ±0.1	7.4% ±<0.1
Not citizens	2,965 ±505	13.1% ±2.2	12.3% ±0.1	6.8% ±<0.1

Millbrae city among the places of California

320th of 661 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the California page.

Places of California near Millbrae city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
San Fernando city	23,632 ±26
East San Gabriel CDP	23,410 ±1,651
West Rancho Dominguez CDP	23,300 ±1,564
Oakdale city	23,194 ±43
Laguna Beach city	22,710 ±62
Millbrae city	22,689 ±27
Calabasas city	22,669 ±43
Ramona CDP	22,634 ±1,941
Marina city	22,563 ±63
West Puente Valley CDP	22,495 ±1,936
Corcoran city	22,491 ±28

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026