American Canyon (previously known as Napa Junction) is a city located in southern Napa County, California, 35 miles (56 km) northeast of San Francisco in the San Francisco Bay Area. The 2010 census reported the city’s population at 19,454. Its ZIP Code is 94503, and its area code is 707. It is in the Pacific Time time zone and observes Daylight-Saving Time. The city was incorporated in 1992.
American Canyon is bounded geographically by the Napa River to the west, the foothills of the Sulfur Springs Mountains to the east, Vallejo and Solano County to the south and vineyards and the Napa County Airport (IATA airport code APC) to the north. American Canyon Creek, a tributary of the Napa River, runs through the city.
According to the United States Census Bureau, the city has a total area of 4.8 square miles (12 km2), of which 99.83% is land and 0.17% is water.
The unincorporated community of Napa Junction is adjacent to the city.
On August 24, 2014, at 3:20 a.m., the area was struck by a magnitude 6.0 earthquake centered 3.7 miles (6.0 km) northwest of the city.
This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F. According to the Köppen Climate Classification system, American Canyon has a warm-summer Mediterranean climate, abbreviated “Csb” on climate maps.
The 2010 United States Census reported that American Canyon had a population of 19,454. The population density was 4,015.4 people per square mile (1,550.4/km²). The racial makeup of American Canyon was 7,564 (38.9%) White, 1,535 (7.9%) African American, 142 (0.7%) Native American, 6,396 (32.9%) Asian, 176 (0.9%) Pacific Islander, 2,357 (12.1%) from other races, and 1,284 (6.6%) from two or more races. Hispanic or Latino of any race were 5,009 persons (25.7%).
The Census reported that 99.7% of the population lived in households and 0.3% lived in non-institutionalized group quarters.
There were 5,657 households, out of which 2,805 (49.6%) had children under the age of 18 living in them, 3,527 (62.3%) were opposite-sex married couples living together, 751 (13.3%) had a female householder with no husband present, 335 (5.9%) had a male householder with no wife present. There were 296 (5.2%) unmarried opposite-sex partnerships, and 42 (0.7%) same-sex married couples or partnerships. 765 households (13.5%) were made up of individuals and 309 (5.5%) had someone living alone who was 65 years of age or older. The average household size was 3.43. There were 4,613 families (81.5% of all households); the average family size was 3.78.