Castaic, CA Profile: Facts & Data


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Castaic, California - Basic Facts

The Castaic Census Designated Place had a population of 19,757 as of July 1, 2018.

The primary coordinate point for Castaic is located at latitude 34.4801 and longitude -118.6329 in Los Angeles County. The formal boundaries for the Castaic Census Designated Place (see map below) encompass a land area of 7.26 sq. miles and a water area of 0.02 sq. miles. Los Angeles County is in the Pacific time zone (GMT -8). The elevation is 1,227 feet.

The Castaic Census Designated Place (GNIS ID: 2582966) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Castaic Census Designated Place is located within Newhall CCD of Los Angeles County.

Beneath the boundary map are tables with Castaic 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 Castaic: Castac.

Jump to... (On This Page!)
  1. Castaic 2018 Demographic Data
  2. Growth Rates for Castaic (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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Castaic, CA Data & Demographics (As of July 1, 2018)


Total Population 19,757
Population in Households 19,598
Population in Familes 17,920
Population in Group Qrtrs 159
Population Density2 2,721
Diversity Index3 70


Median Household Income $121,240
Average Household Income $148,105
Per Capita Income $44,721


Total Housing Units 6,030 (100%)
Owner Occupied HU 4,950 (82.1%)
Renter Occupied HU 953 (15.8%)
Vacant Housing Units 127 ( 2.1%)
Median Home Value $522,425
Average Home Value $611,639


Total Households 5,903
Average Household Size 3.32
Family Households 4,974
Average Family Size 4
  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 0.47% 0.36%
Households 0.32% 0.25%
Families 0.34% 0.29%
Median Household Income   3.21%
Per Capita Income   3.33%

Castaic, CA - Peer Comparisons by Rank and Percentile

The table below compares Castaic 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 # 350 77th
Population Density # 509 66th
Diversity Index # 652 57th
Median Household Income # 104 93rd
Per Capita Income # 328 78th

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

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California Census Data Comparison Tool

Compare California July 1, 2018 Data
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