Big River is a census-designated place (CDP) in San Bernardino County, California, United States. The population was 1,084 at the 2020 census, down from 1,327 at the 2010 census.
Geography
Big River is located on the west bank of the Colorado River at (34.134021, -114.369782). Since the river is mostly flowing west at this point, Big River is mostly north of the Arizona side. Immediately across the current flow of the river is Deer Island, shared between California and Arizona based on a previous course of the river as is much of the California/Arizona border.
According to the United States Census Bureau, the CDP has a total area of . of it is land and of it (4.60%) is water.
Parks and Recreation
Parks in Big River are administered by the Big River Community Service District
Demographics
Big River was first listed as a census designated place in the 1980 U.S. census.
The median age was 59.8 years. The age distribution was 11.5% under the age of 18, 4.4% aged 18 to 24, 14.5% aged 25 to 44, 31.1% aged 45 to 64, and 38.5% who were 65 years of age or older. For every 100 females, there were 101.5 males, and for every 100 females age 18 and over, there were 102.7 males age 18 and over. 65.4% of residents lived in urban areas, while 34.6% lived in rural areas.
The whole population lived in households. There were 550 households, out of which 14.4% included children under the age of 18. Of all households, 34.7% were married-couple households, 8.7% were cohabiting couple households, 25.6% had a male householder with no spouse or partner present, and 30.9% had a female householder with no spouse or partner present. 40.4% of households were one person, and 23.6% were one person aged 65 or older. The average household size was 1.97. There were 272 families (49.5% of all households).
There were 1,014 housing units at an average density of , of which 550 (54.2%) were occupied. Of occupied units, 80.0% were owner-occupied and 20.0% were occupied by renters. Of all housing units, 45.8% were vacant. The homeowner vacancy rate was 2.6% and the rental vacancy rate was 11.9%.
{| class="wikitable"
|+ Racial composition as of the 2020 census
In the United States House of Representatives, Big River is in .