SoCalGas® will be working on a natural gas pipelines in the following locations: Princeton St between Exeter Ave and Bel Air Ave and Exeter Ave between Princeton St and San Bernardino St. We would like to make you aware of the potential odor of natural gas in the area. For more information, please click here.

Department Overview

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The Administrative Services Department directs the day-to-day operations of all department functions. The Department establishes and implements priorities, policies and procedures, and provides long-range planning for a variety of functions and programs. In addition, the Department directs, oversees, coordinates, and supports the efforts of all City Department ensuring that the City Council policy and direction is carried out.

The Administrative Services Director and supervisory staff administer, manage, and supervise a variety of functions including telecommunications, information technology, personnel services, labor relations, administrative support, and contract services. The Department also provides extensive support services to each City department, the City Manager, and City Council.

City of Montclair Department Organizational Chart


About the Administrative Services Director

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Jon Hamilton grew up in Rancho Cucamonga and graduated from Alta Loma High School. He then attended The Citadel – The Military College of South Carolina, where he earned his Bachelor of Arts in German Language and Literature. Mr. Hamilton then attended Whittier Law School and earned his Juris Doctorate degree. After Law School, Mr. Hamilton attended Marine Corps’ Officer Candidate School in Quantico, VA. Mr. Hamilton became a prosecutor in the Marine Corps at Camp Pendleton, California; however, he later served as a logistics officer with the First Marine Division during the invasion of Iraq. In November 2004, Mr. Hamilton left the Marines as a captain and began practicing as a civil litigation attorney representing primarily municipalities and police officers.  During this time, Mr. Hamilton attended Cal Poly Pomona and earned his Masters of Public Administration.  Prior to coming to the City of Montclair, Mr. Hamilton worked for the California Office of the Inspector General overseeing the operations of prisons in this state.  Mr. Hamilton has three children and enjoys flying, hiking and is an avid student of history.

Jon Hamilton

Director of Administrative Services and Human Resources

Phone: (909) 625-9406

Fax: (909) 621-1584





Divisions of Administrative Services

Information Technology

John Nguyen

Director of Information Technology

Phone: (909) 625-9409



Human Resources


Stephanie Hickerson

Personnel Services Coordinator

Phone: (909) 625-9407



Leslie Phillips

Benefits Coordinator

Phone: (909) 625-9476



City Clerk

Andrea Phillips

City Clerk

Phone: (909) 625-9416




Donald L. Parker, CPA

Finance Director

Phone: (909) 625-9471