Rainbow is a census designated place (CDP) in northern San Diego County in the U.S. state of California. The population was 1,832 at the 2010 census, down from 2,026 at the 2000 census.GeographyRainbow is located at .According to the United States Census Bureau, the CDP has a total area of 11.0sqmi, all land.ClimateAccording to the Köppen Climate Classification system, Rainbow has a warm-summer Mediterranean climate, abbreviated "Csa" on climate maps.Demographics2010The 2010 United States Census reported that Rainbow had a population of 1,832. The population density was 165.9 people per square mile (64.1/km²). The racial makeup of Rainbow was 1,324 (72.3%) White, 19 (1.0%) African American, 12 (0.7%) Native American, 43 (2.3%) Asian, 12 (0.7%) Pacific Islander, 371 (20.3%) from other races, and 51 (2.8%) from two or more races. Hispanic or Latino of any race were 665 persons (36.3%).
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