General Law city
Incorporated: April 25, 1913
City Hall: 2200 Huntington Dr, San Marino, California 91108
Population (2020 Census): 12,513 (Also see latest State Population Estimates and Earlier decennial Census Counts).
Population Under Age 18 (2020 Census): 20.9%
Population Density (2020 Census): 3,322.6 persons per square mile
Housing Units: 4,482
Persons Per Housing Unit: 2.8
Land Area: 3.77 square miles (9.75 square kilometers)
Water Area: 0.01 square miles (0.02 square kilometers)
Total Area: 3.77 square miles (9.76 square kilometers)
Geographic Coordinates (Latitude/Longitude): 34.122671 -118.112911
Named by James de Barth Shorb in 1878 where he built his home. The name came from his birthplace in Maryland that had been named after the tiny European republic. The land was received from his father-in-law Don Benito Wilson. In 1903, Henry Huntington purchased the property and retained the name for his estate.
City in red below. Click on map for more detailed color map of county.