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Acalanes Ridge
Acalanes Ridge
census-designated place
	Acalanes Ridge Position in California. Acalanes Ridge Acalanes Ridge (the United States)
	Coordinates: 37°54′17″N 122°04′43″W / 37.90472°N 122.07861°W
Country	United States
State	California
County	Contra Costa
Area
• Total	0.46 sq mi (1.19 km2)
• Land	0.46 sq mi (1.19 km2)
• Water	0.00 sq mi (0.00 km2) 0%
Elevation	750 ft (230 m)
Population (2020)
• Total	1,285
• Density	2,787.42/sq mi (1,076.60/km2)
Time zone	UTC-8 (Pacific (PST))
• Summer (DST)	UTC-7 (PDT)
FIPS code	06-00135
GNIS feature ID	2582926
	U.S. Geological Survey Geographic Names Information System: Acalanes Ridge, California

Acalanes Ridge is a census-designated place^[2] in Contra Costa County, California. Acalanes Ridge sits at an elevation of 499 feet (152 m).^[2] The population was 1,285 at the 2020 Census.

Acalanes Ridge was created a census-designated place for the 2010 census, and comes alphabetically first among all census-designated places in California.^{[citation needed]}

History

Acalanes Ridge is named after the area's historical Native American residents, the Sacalanes.^[3]

Demographics

Historical population
Census	Pop.	%±
2010	1,137	—
2020	1,285	13.0%
U.S. Decennial Census^[4] 2010^[5]

Acalanes Ridge first appeared as a census designated place in the 2010 U.S. Census formed from part of Walnut Creek city and additional area.^[5]

The 2010 United States Census^[6] reported that Acalanes Ridge had a population of 1,137. The population density was 2,468.2 inhabitants per square mile (953.0/km²). The racial makeup of Acalanes Ridge was 951 (83.6%) White, 5 (0.4%) African American, 8 (0.7%) Native American, 126 (11.1%) Asian, 2 (0.2%) Pacific Islander, 8 (0.7%) from other races, and 37 (3.3%) from two or more races. Hispanic or Latino of any race were 50 persons (4.4%).

The Census reported that 100% of the population lived in households.

There were 441 households, out of which 143 (32.4%) had children under the age of 18 living in them, 293 (66.4%) were opposite-sex married couples living together, 28 (6.3%) had a female householder with no husband present, 10 (2.3%) had a male householder with no wife present. There were 15 (3.4%) unmarried opposite-sex partnerships, and 6 (1.4%) same-sex married couples or partnerships. 89 households (20.2%) were made up of individuals, and 39 (8.8%) had someone living alone who was 65 years of age or older. The average household size was 2.58. There were 331 families (75.1% of all households); the average family size was 2.93.

The population was spread out, with 265 people (23.3%) under the age of 18, 45 people (4.0%) aged 18 to 24, 232 people (20.4%) aged 25 to 44, 411 people (36.1%) aged 45 to 64, and 184 people (16.2%) who were 65 years of age or older. The median age was 46.3 years. For every 100 females, there were 94.7 males. For every 100 females age 18 and over, there were 94.2 males.

There were 457 housing units at an average density of 992.1 per square mile (383.1/km²), of which 441 were occupied, of which 393 (89.1%) were owner-occupied, and 48 (10.9%) were occupied by renters. The homeowner vacancy rate was 0.3%; the rental vacancy rate was 7.5%. 1,023 people (90.0% of the population) lived in owner-occupied housing units and 114 people (10.0%) lived in rental housing units.