Belmont, CA Profile: Facts, Map & Data


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Belmont, California - Basic Facts

The City of Belmont had a population of 27,142 as of July 1, 2018. Belmont 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 Belmont is located at latitude 37.5144 and longitude -122.2945 in San Mateo County. The formal boundaries for the City of Belmont (see map below) encompass a land area of 4.63 sq. miles and a water area of 0.01 sq. miles. San Mateo County is in the Pacific time zone (GMT -8). The elevation is 43 feet.

The City of Belmont (GNIS ID: 2409826) 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 Belmont is located within San Mateo CCD of San Mateo County.

Beneath the boundary map are tables with Belmont population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

Alternate Unofficial Names for Belmont: Portezuelo de las Pulgas.

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City of Belmont, CA Boundary Map

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Belmont, CA Data & Demographics (As of July 1, 2018)


Total Population 27,142
Population in Households 26,639
Population in Familes 21,433
Population in Group Qrtrs 503
Population Density2 5,868
Diversity Index3 64


Median Household Income $113,412
Average Household Income $159,737
Per Capita Income $65,992


Total Housing Units 11,379 (100%)
Owner Occupied HU 6,610 (58.1%)
Renter Occupied HU 4,440 (39.0%)
Vacant Housing Units 329 ( 2.9%)
Median Home Value $1,068,680
Average Home Value $1,165,577


Total Households 11,050
Average Household Size 2.41
Family Households 7,172
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2017 2017-2022
Population 0.6% 0.48%
Households 0.53% 0.45%
Families 0.55% 0.48%
Median Household Income   3.07%
Per Capita Income   2.99%

Belmont, CA - Peer Comparisons by Rank and Percentile

The table below compares Belmont to the other 1,516 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2018 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.

Variable Description Rank Percentile
Total Population # 283 81st
Population Density # 191 87th
Diversity Index # 752 50th
Median Household Income # 132 91st
Per Capita Income # 114 93rd

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.

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