City of Martinez, CA - City Hall

City of Martinez, CA - City Hall Established in 1876, Martinez is the County seat of Contra Costa County.

Happy Labor Day! On Monday, September 7, 2026, City Hall is closed in recognition of the holiday. Regular hours will res...
09/07/2026

Happy Labor Day! On Monday, September 7, 2026, City Hall is closed in recognition of the holiday. Regular hours will resume on Tuesday, September 8th.

The splash pad at Rankin Aquatic Center is temporarily closed due to a maintenance issue. We expect it to remain closed ...
09/06/2026

The splash pad at Rankin Aquatic Center is temporarily closed due to a maintenance issue. We expect it to remain closed for the rest of today, Sunday 9/6/2026, and reopen for next weekend’s rec swim.

09/06/2026

On Sunday, September 6th, 2026, we observe the 18th anniversary of the passing of Sgt. Paul Starzyk, who tragically lost his life in the line of duty while responding to an armed domestic violence incident. Thank you to the members of the community who joined us this morning for this memorial honoring his courage, service, and memory.

Another great play site at the festival, bubbles!
08/30/2026

Another great play site at the festival, bubbles!

08/29/2026

Did someone say foam party?!

08/29/2026
Come join us and thousands of closest friends! Our 150 festival is Saturday, August 29 11 AM to 7 PM. A free dessert for...
08/29/2026

Come join us and thousands of closest friends! Our 150 festival is Saturday, August 29 11 AM to 7 PM. A free dessert for all attendees come visit the city tent to claim your ticket! Martinez waterfront Park, 245 North Court St., Martinez 94553

Thank you to our sister city mayor fromIsola delle Femmine, Italy for coming out to celebrate our Sesquicentennial Cente...
08/29/2026

Thank you to our sister city mayor fromIsola delle Femmine, Italy for coming out to celebrate our Sesquicentennial Centennial with us!

Address

525 Henrietta Street
Martinez, CA
94553

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+19253723500

Website

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