Big River is a census-designated place in San Bernardino County, California, with a population of 1,084 in 2020, down from 1,327 in 2010. It is located on the west bank of the Colorado River, mostly north of the Arizona side, near Deer Island. The CDP covers 11.4 square miles, of which 10.8 square miles is land and 0.5 square miles (4.6%) is water. Parks are managed by the Big River Community Service District.
For context, Big Bear City (mentioned in your data) had a population of 12,738 in 2020, with a population density of 397.9 per square mile. Its racial makeup was mostly White (73.9%), with Hispanic or Latino residents comprising 22.6% of the population.









