Half Moon Bay, CA Profile: Facts, Map & Data


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Half Moon Bay, California - Basic Facts

The City of Half Moon Bay had a population of 12,108 as of July 1, 2016.

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.

Beneath the boundary map are tables with Half Moon Bay population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

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

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


City of Half Moon Bay, CA Boundary Map

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Boundary Maps: Half Moon Bay CCD | San Mateo County | California Counties

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Half Moon Bay, CA Data & Demographics (As of July 1, 2016)


Total Population 12,108
Population in Households 12,026
Population in Familes 9,792
Population in Group Qrtrs 82
Population Density1 1,885
Diversity Index2 70


Total Households 4,384
Average Household Size 2.74
Family Households 3,022
Average Family Size 3


Total Housing Units 4,651 (100%)
Owner Occupied HU 3,026 (65.1%)
Renter Occupied HU 1,357 (29.2%)
Vacant Housing Units 267 ( 5.7%)
Median Home Value $817,484
Average Home Value $805,823


Median Household Income $98,299
Average Household Income $140,595
Per Capita Income $50,592
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.08% 1.3%
Households 0.89% 1.17%
Families 1.1% 1.18%
Median Household Income   2.19%
Per Capita Income   1.76%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

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, 2016 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 # 448 71st
Population Density1 # 622 59th
Diversity Index2 # 629 59th
Median Household Income # 166 89th
Per Capita Income # 182 88th

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