Incorporated: April 22, 1924 (became charter city November 7, 2000)
City Hall: 2175 Cherry Ave, Signal Hill, California 90806
Population (2020 Census): 11,848 (Also see latest State Population Estimates and Earlier decennial Census Counts).
Population Under Age 18 (2020 Census): 20.3%
Population Density (2020 Census): 5,412.5 persons per square mile
Housing Units: 4,749
Persons Per Housing Unit: 2.5
Land Area: 2.19 square miles (5.67 square kilometers)
Water Area: 0.00 square miles (0.01 square kilometers)
Total Area: 2.19 square miles (5.67 square kilometers)
Geographic Coordinates (Latitude/Longitude): 33.803461 -118.169735
From the earliest days, the hill had been used by as a lookout and signal point. It had also been known since Spanish times as Los Cerritos. In 1889 to 1890, John Rockwell erected a signal on the hill when the Coast Survey established the Los Angeles Base Line. It then became known as Signal Hill.
City in red below. Click on map for more detailed color map of county.
See our Signal Hill postcards: