Castle Hill, California

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Castle Hill
census-designated place
Castle Hill is located in California
Castle Hill
Castle Hill
Position in California.
Coordinates: 37°52′23″N 122°03′26″W / 37.87306°N 122.05722°W / 37.87306; -122.05722Coordinates: 37°52′23″N 122°03′26″W / 37.87306°N 122.05722°W / 37.87306; -122.05722
Country  United States
State  California
County Contra Costa
 • Total 0.728 sq mi (1.885 km2)
 • Land 0.728 sq mi (1.885 km2)
 • Water 0 sq mi (0 km2)  0%
Elevation[2] 302 ft (92 m)
Population (2010)
 • Total 1,299
 • Density 1,800/sq mi (690/km2)
Time zone Pacific (PST) (UTC-8)
 • Summer (DST) PDT (UTC-7)
GNIS feature ID 2582967
U.S. Geological Survey Geographic Names Information System: Castle Hill, California

Castle Hill is a census-designated place[3] in Contra Costa County, California. Castle Hill sits at an elevation of 302 feet (92 m). The 2010 United States census reported Castle Hill's population was 1,299.


According to the United States Census Bureau, the CDP has a total area of 0.728 square miles (1.855 km²), all of it land.


The 2010 United States Census[4] reported that Castle Hill had a population of 1,299. The population density was 1,784.5 people per square mile (689.0/km²). The racial makeup of Castle Hill was 1,112 (85.6%) White, 29 (2.2%) African American, 1 (0.1%) Native American, 110 (8.5%) Asian, 2 (0.2%) Pacific Islander, 9 (0.7%) from other races, and 36 (2.8%) from two or more races. Hispanic or Latino of any race were 78 persons (6.0%).

The Census reported that 1,265 people (97.4% of the population) lived in households, 12 (0.9%) lived in non-institutionalized group quarters, and 22 (1.7%) were institutionalized.

There were 497 households, out of which 147 (29.6%) had children under the age of 18 living in them, 322 (64.8%) were opposite-sex married couples living together, 32 (6.4%) had a female householder with no husband present, 15 (3.0%) had a male householder with no wife present. There were 19 (3.8%) unmarried opposite-sex partnerships, and 10 (2.0%) same-sex married couples or partnerships. 99 households (19.9%) were made up of individuals and 52 (10.5%) had someone living alone who was 65 years of age or older. The average household size was 2.55. There were 369 families (74.2% of all households); the average family size was 2.93.

The population was spread out with 275 people (21.2%) under the age of 18, 62 people (4.8%) aged 18 to 24, 203 people (15.6%) aged 25 to 44, 472 people (36.3%) aged 45 to 64, and 287 people (22.1%) who were 65 years of age or older. The median age was 50.3 years. For every 100 females there were 97.7 males. For every 100 females age 18 and over, there were 93.9 males.

There were 523 housing units at an average density of 718.5 per square mile (277.4/km²), of which 441 (88.7%) were owner-occupied, and 56 (11.3%) were occupied by renters. The homeowner vacancy rate was 1.6%; the rental vacancy rate was 8.2%. 1,137 people (87.5% of the population) lived in owner-occupied housing units and 128 people (9.9%) lived in rental housing units.


  1. ^ U.S. Census
  2. ^ "Castle Hill Census Designated Place". Geographic Names Information System, U.S. Geological Survey. 
  3. ^ "Castle Hill Census Designated Place". Geographic Names Information System, U.S. Geological Survey. 
  4. ^ All data are derived from the United States Census Bureau reports from the 2010 United States Census, and are accessible on-line here. The data on unmarried partnerships and same-sex married couples are from the Census report DEC_10_SF1_PCT15. All other housing and population data are from Census report DEC_10_DP_DPDP1. Both reports are viewable online or downloadable in a zip file containing a comma-delimited data file. The area data, from which densities are calculated, are available on-line here. Percentage totals may not add to 100% due to rounding. The Census Bureau defines families as a household containing one or more people related to the householder by birth, opposite-sex marriage, or adoption. People living in group quarters are tabulated by the Census Bureau as neither owners nor renters. For further details, see the text files accompanying the data files containing the Census reports mentioned above.