Incorporated: August 6, 1957
City Hall: 5050 N Irwindale Ave, Irwindale, California 91706
Population (2020 Census): 1,472 (Also see latest State Population Estimates and Earlier decennial Census Counts).
Population Under Age 18 (2020 Census): 24.4%
Population Density (2020 Census): 166.8 persons per square mile
Housing Units: 424
Persons Per Housing Unit: 3.5
Land Area: 8.82 square miles (22.85 square kilometers)
Water Area: 0.79 square miles (2.04 square kilometers)
Total Area: 9.61 square miles (24.89 square kilometers)
Geographic Coordinates (Latitude/Longitude): 34.111855 -117.963614
Named by a fruit grower combining his last name Irwin and his daughter’s first name Dale.
City in red below. Click on map for more detailed color map of county.