Coronavirus City Operations Update

Close up image of coronavirus with update websiteLast updated: March 31, 2020

Because of the continued rapid spread of COVID-19, a Health Officer Order is in effect countywide March 20-April 19, 2020. This order closely matches the Executive Order issued effective midnight today by the California governor. Both County and State orders prohibit the gathering of groups of any size and calls on individuals to remain in their homes as much as possible.

County of Los Angeles Health Officer requires self-isolation of persons diagnosed with or likely to have COVID-19 - March 25, 2020  

State of California Executive Order During COVID-19 Response - March 21, 2020

Los Angeles County Safer at Home Order for Control of COVID-19 - March 21, 2020 

The following changes to City operations are effective through April 30, 2020: 

City Facilities

All City facilities, including City Hall, the Diamond Bar Center and Heritage Park will be closed to the public. However, City operations will continue to run with staff available to provide services and answer questions by phone and email. 

City Services

All services requiring in-person visits or public counter assistance will be suspended or made available online.

Community Development Department (909) 839-7030

Planning Projects (909) 839-7030 or 

Public Works Department

Transportation Services

Online Resources

City Events and Recreation Classes

All City events and recreation classes will be canceled or rescheduled until further notice.

Parks and Trails

Trails and trail heads, tennis and basketball courts, playing fields, playgrounds, picnic areas, the skate park in Peterson Park, and the dog park at Pantera Park are closed, however, open areas of city parks and public outdoor restrooms will remain open, and their maintenance and upkeep will continue.

  • Parks and Recreation Department (909) 839-7070

City Meetings

City Council and Commissions meetings will resume in April and made available telepathically. Participation information will be provided on meeting agenda.