Downtown Ontario Improvement Association | City of Ontario, California

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Downtown Ontario Improvement Association

For more information about the Downtown Ontario Improvement Association, visit www.downtownontario.org.

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Hours & Information

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 needs.

Address

City Hall
303 E. B Street
Ontario, California 91764

City Hall Annex
200 N. Cherry Avenue
Ontario, California 91764

Phone

(909) 395-2000

Hours

Monday - Thursday: 7:30 AM - 5:30 PM
Friday: 8:00 AM - 5:00 PM

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