Walnut Creek, Calif., Police Chief Jamie Knox announced his retirement on Aug. 7, 2025, but he will remain through the end of the year. He has served as chief for the Walnut Creek Police Department for four years. (Walnut Creek Police Department via Bay City News)

Walnut Creek Police Chief Jamie Knox this week announced he is retiring at the end of 2025.

Knox has spent four and a half years as Walnut Creek’s top cop as part of more than 30 years of law enforcement experience, according to a statement released by the city.

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Dan McMenamin is the managing editor at Bay City News, directing daily news coverage of the 12-county greater Bay Area. He has worked for BCN since 2008 and has been managing editor since 2014 after previously serving as BCN’s San Francisco bureau reporter. A UC Davis graduate, he came to BCN after working for a newspaper and nonprofit in the Davis area. He handles staffing, including coaching of our interns, day-to-day coverage decisions and management of the newswire.