Census & Demographics Data

The estimated population for the City of Montclair as of July 1, 2019, according to the U.S. Census Bureau, was 40,083 residents. The total land area within the City’s corporate boundary is 5.54 square miles, with an additional .92 square miles in the City’s Sphere of Influence, which extends west to the Los Angeles County line; south to Phillips Boulevard; and east to Benson Avenue.