Half Moon Bay, CA Profile: Facts & Data


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Half Moon Bay, California - Basic Facts

The City of Half Moon Bay had a population of 12,356 as of July 1, 2018.

The primary coordinate point for Half Moon Bay is located at latitude 37.4673 and longitude -122.4405 in San Mateo County. The formal boundaries for the City of Half Moon Bay (see map below) encompass a land area of 6.42 sq. miles and a water area of 0.02 sq. miles. San Mateo County is in the Pacific time zone (GMT -8). The elevation is 75 feet.

The City of Half Moon Bay (GNIS ID: 2410685) 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 Half Moon Bay is located within Half Moon Bay CCD of San Mateo County.

Alternate Unofficial Names for Half Moon Bay: Halfmoon Bay, San Benito, San Benitos, Spanish Town, Spanishtown.

Jump to... (On This Page!)
  1. Half Moon Bay 2018 Demographic Data
  2. Growth Rates for Half Moon Bay (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. California Research Tools (Easy Tools & Current Data)
  3. California Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Half Moon Bay, CA Data & Demographics (As of July 1, 2018)


Total Population 12,356
Population in Households 12,276
Population in Familes 10,066
Population in Group Qrtrs 80
Population Density2 1,924
Diversity Index3 70


Median Household Income $108,887
Average Household Income $153,882
Per Capita Income $56,076


Total Housing Units 4,657 (100%)
Owner Occupied HU 3,185 (68.4%)
Renter Occupied HU 1,349 (29.0%)
Vacant Housing Units 122 ( 2.6%)
Median Home Value $1,064,231
Average Home Value $1,141,575


Total Households 4,535
Average Household Size 2.71
Family Households 3,127
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 1.06% 0.82%
Households 1.08% 0.81%
Families 1.25% 0.84%
Median Household Income   4.15%
Per Capita Income   3.57%

Half Moon Bay, CA - Peer Comparisons by Rank and Percentile

The table below compares Half Moon Bay 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 # 446 71st
Population Density # 616 59th
Diversity Index # 650 57th
Median Household Income # 155 90th
Per Capita Income # 180 88th

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

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