City Hall     Located at the heart of downtown, Ontario City Hall provides a wide range of services. City departments are ready to assist and are happy to help residents and businesses with their questions and concerns. Address   City Hall 303 East "B" Street Ontario, CA  91764   City Hall Annex 415 East "B" Street Ontario, CA  91764     Phone (909) 395-2000     Hours Monday - Thursday 7:30am - 5:30pm   Friday 8:00am - 5:00pm

City Hall 2012 Holiday Closures     Martin Luther King, Jr. January 16   President's Day February 20   Memorial Day May 28   Independence Day July 4   Labor Day September 3   Columbus Day October 8   Veterans Day (observed) November 12   Thanksgiving November 22 - 23   Christmas Eve December 24   Christmas Day December 25   New Year's Eve December 31   Holiday Refuse schedules, please click here.