Rio Dell is a city in Humboldt County, California, United States. Rio Dell is located on the west bank of the Eel River 1mi north of Scotia, at an elevation of 161 feet . The population was 3,363 at the 2010 census, up from 3,174 at the 2000 census.GeographyAccording to the United States Census Bureau, the city has a total area of 2.4sqmi, of which, 2.3sqmi of it is land and 0.1sqmi of it (5.61%) is water.ClimateThis region experiences warm and dry summers, with no average monthly temperatures above 71.6 °F. According to the Köppen Climate Classification system, Rio Dell has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.HistoryThe first post office at Rio Dell opened in 1876. Rio Dell incorporated in 1965. Rio Dell was connected to Scotia by a ferry provided by the lumber mill, and a suspension bridge built in 1914.Demographics2010The 2010 United States Census reported that Rio Dell had a population of 3,368. The population density was 1,393.2 people per square mile (537.9/km²). The racial makeup of Rio Dell was 2,894 (85.9%) White, 13 (0.4%) African American, 125 (3.7%) Native American, 25 (0.7%) Asian, 3 (0.1%) Pacific Islander, 140 (4.2%) from other races, and 168 (5.0%) from two or more races. Hispanic or Latino of any race were 384 persons (11.4%).
