The City of Aliso Viejo is grieving the sudden loss of City Manager Mitzi Ortiz, who passed away unexpectedly on December 22, 2025.
Mitzi was more than a City Manager; she was a trusted leader, a compassionate listener, and a familiar and caring presence throughout the community. During her eleven years of dedicated service to the City, she demonstrated an unwavering commitment to public service, approaching her work with integrity, humility, and genuine care for the residents and colleagues she served. Her impact to the City and the many lives she touched during her tenure will be greatly remembered.
The Mayor and City Council extend their deepest condolences to Mitzi’s family, friends, and loved ones, as well as to City employees and community members who are mourning this profound loss. During the Christmas season — a time centered on family, reflection, and togetherness — this news is especially difficult for our community.
“This is a heartbreaking loss for our city,” said the Mayor Tiffany Ackley. “Mitzi had recently stepped into her role as City Manager after being unanimously promoted from within following a long and dedicated tenure at City Hall. She led with compassion and humility, and cared deeply about this community and the people who serve it. She will be profoundly missed.”
In accordance with City Council policy, Mitzi had previously appointed Ann Eifert to serve as Acting City Manager during her absence. City staff will ensure services continue uninterrupted while the community takes time to honor Mitzi’s memory and legacy.
As a reminder, City Hall and Aliso Viejo Ranch will be closed from Thursday, December 25, through Sunday, January 4, reopening on Monday, January 5. Residents are encouraged to visit avcity.org for information on available services and frequently asked questions. In the event of an emergency during the winter closure, please contact the Orange County Sheriff’s Department at (714) 647-7000 or call 9-1-1.
At this time, the City’s focus is on supporting one another and allowing space for collective grief. Additional information will be shared as appropriate. The City respectfully requests that the privacy of Mitzi’s family be honored during this difficult time.