Saranap Address Change

Project Overview

.In 2019 County Supervisor Candace Andersen and the Department of Conservation and Development were asked by a group of residents living in your neighborhood to investigate the possibility of changing the place name of some addresses from Walnut Creek to Lafayette. This unincorporated portion of the County is currently considered Walnut Creek with a zip code of 94595. However this group of 465 parcels is within the Lafayette School District and the City of Lafayette Sphere of Influence. The proposal would change the mailing address to Lafayette with a zip code of 94549. While this would change the mailing address to Lafayette it will still be part of unincorporated Contra Costa County, not the city of Lafayette. The United States Postal Service denied this request for zip code change. 

After the denial, a community group worked with Congressman DeSaulnier’s office to file an appeal. The USPS granted the appeal and implemented the change in January of 2021. The USPS made this change using a process called the “Preferred Last Line” and not via a change of Zip Code change. This essentially means that mail can now be delivered to your area when the mailing address shows the city as Lafayette, so long as the 94595 Zip Code is used. The County will host a meeting in October of 2021 to give an opportunity for discussion about the USPS change and the possibility of making a similar change to your parcel’s address on the property tax rolls.

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  1. Staff Contact
  2. FAQs and Resources
  3. Community Meetings

Staff Contacts

Todd Fitzsimmons
Senior Planner
925-655-2903
Email Todd

Supervisor Andersen’s Office
925-957-8860,
Email Supervisor Andersen's Office