Millbrae, CA Profile: Facts & Data

The City of Millbrae had a population of 24,030 as of July 1, 2024. Millbrae ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in California. See peer rankings below.

The primary coordinate point for Millbrae is located at latitude 37.5985 and longitude -122.3872 in San Mateo County. The formal boundaries for the City of Millbrae encompass a land area of 3.25 sq. miles and a water area of 0.01 sq. miles. San Mateo County is in the Pacific time zone (GMT -8).

The City of Millbrae has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Millbrae is located within South San Francisco CCD of San Mateo County.

Millbrae, CA Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	24,030 (100%)
Population in Households	23,833 (99.2%)
Population in Families	20,100 (83.6%)
Population in Group Quarters¹	197 ( 0.8%)
Population Density	7,352
Diversity Index²	68


INCOME
Median Household Income	$150,595
Average Household Income	$195,421
% of Income for Mortgage⁴	76%
Per Capita Income	$68,167
Wealth Index⁵	183
Socioeconomic Status Index⁶	Moderate (52.7)

HOUSING
Total HU (Housing Units)	9,053 (100%)
Owner Occupied HU	5,031 (55.6%)
Renter Occupied HU	3,349 (37.0%)
Vacant Housing Units	673 ( 7.4%)
Median Home Value	$1,825,634
Average Home Value	$1,736,106
Housing Affordability Index³	34

HOUSEHOLDS
Total Households	8,380
Average Household Size	2.84
Family Households	6,003
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Millbrae, CA - Peer Comparisons by Rank and Percentile

The table below compares Millbrae to the other 1,618 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	0.81%	0.90%
Households	0.31%	0.51%
Families		0.46%
Median Household Income		2.47%
Per Capita Income		2.10%
Owner Occupied HU		-0.04%

Variable Description	Rank	Percentile
Total Population	# 313	81st
Population Density	# 128	92nd
Median Household Income	# 162	90th
Housing Affordability Index	# 288	18th
Per Capita Income	# 258	84th
Diversity Index	# 843	48th

Millbrae, CA Profile: Facts & Data

Millbrae, California - Basic Facts

Millbrae, CA Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Millbrae, CA - Peer Comparisons by Rank and Percentile

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