Millbrae vs San Carlos

A side-by-side comparison of Millbrae and San Carlos: population, income, housing, and more.

Millbrae and San Carlos are places in California. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

San Carlos has the higher population (29,797 vs 22,589 in Millbrae). San Carlos has the higher median household income ($233,333 vs $157,567 in Millbrae). San Carlos has the higher median home value ($2,000,001 vs $1,929,700 in Millbrae).

Population, income & housing

	Millbrae	San Carlos
Population	22,589	29,797
Median age	45.3 yrs	41.6 yrs
Median household income	$157,567	$233,333
Median home value	$1,929,700	$2,000,001
Median gross rent	$3,401	$2,802
Housing units	8,566	11,679
Homeownership rate	63.2%	68.2%
Bachelor's degree or higher	50.5%	68.1%
Unemployment rate	6.3%	4.6%

Trends (ACS 5-year, 2019–2023)

	Millbrae	San Carlos
Population	22,625 → 22,589 (-0.2%)	30,154 → 29,797 (-1.2%)
Median household income	$128,494 → $157,567 (+22.6%)	$182,083 → $233,333 (+28.1%)
Median home value	$1,403,100 → $1,929,700 (+37.5%)	$1,625,700 → $2,000,001 (+23.0%)
Median gross rent	$2,508 → $3,401 (+35.6%)	$2,321 → $2,802 (+20.7%)

Millbrae

Population

22,62522,589

Median household income

$128,494$157,567

Median home value

$1,403,100$1,929,700

Median gross rent

$2,508$3,401

San Carlos

Population

30,15429,797

Median household income

$182,083$233,333

Median home value

$1,625,700$2,000,001

Median gross rent

$2,321$2,802

Age & race/ethnicity

Age distribution (share)

	Millbrae	San Carlos
Under 5	5.6%	5.3%
5 to 17	12.9%	18.6%
18 to 24	6.2%	5.2%
25 to 34	11.9%	9.8%
35 to 44	13.0%	16.3%
45 to 54	14.4%	14.8%
55 to 64	15.0%	13.6%
65 to 74	10.7%	9.6%
75 and over	10.4%	6.9%

Race & ethnicity (share)

	Millbrae	San Carlos
White (non-Hispanic)	31.9%	57.3%
Black or African American	0.4%	0.8%
American Indian & Alaska Native	0.0%	0.1%
Asian	48.8%	21.8%
Native Hawaiian & Pacific Islander	1.3%	0.8%
Some other race	1.4%	1.3%
Two or more races	4.1%	7.2%
Hispanic or Latino	12.1%	10.7%

Educational attainment (age 25+)

Share of adults 25+

	Millbrae	San Carlos
No high school diploma	6.8%	3.3%
High school graduate	17.3%	7.7%
Some college or associate's	25.4%	20.9%
Bachelor's degree	29.4%	30.4%
Graduate or professional degree	21.1%	37.7%

Commute to work

How workers get to work (share)

	Millbrae	San Carlos
Drove alone	57.9%	54.1%
Carpooled	9.5%	4.0%
Public transit	9.1%	3.7%
Walked	1.6%	1.5%
Bicycle	0.6%	1.8%
Worked from home	19.9%	32.5%
Other means	1.5%	2.4%

Housing

Units in structure (share)

	Millbrae	San Carlos
1-unit, detached	63.7%	66.9%
1-unit, attached	3.4%	4.8%
2 to 4 units	4.6%	3.8%
5 to 19 units	10.9%	15.8%
20 or more units	17.0%	8.7%
Mobile home & other	0.4%	0.0%

Poverty & households

	Millbrae	San Carlos
Poverty rate	6.1%	3.2%
Average household size	2.78	2.68
Mean commute (minutes)	29	25
Median year structure built	1960	1961