CITY HALL CLOSURE NOTICE REGARDING RECEIPT OF EMAIL, MAIL, AND ONLINE FORMS
The City business offices will be closed for the holidays beginning at 6:00 p.m. on December 18, 2025, and will resume operations on Monday, January 5, 2026, at 7:00 a.m. Any communications sent to the City via email, mail, or online form submission during this closure will be considered received by the City no earlier than January 5, 2026.

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.