Mariposa County Election Official Keith WilliamsOctober 16, 2019 - Dear Taxpayers: The recent mistake by our printer has caused a lot of confusion in the community. In many of our tax bills a return envelope with the City of Atwater’s address was inserted. The printer has mailed out a letter from our office with the correct return envelope. The printer is paying for this mailing. The correct envelope will have a mailing address of:


Mariposa County Tax Collector
PO Box 1450
Suisun City, CA 94585-4450

This address is a direct mailing to our bank’s remittance processing center. In addition to the above address you can mail your payments directly to our office at:

Mariposa County Tax Collector
PO Box 247
Mariposa, CA 95338

If you have already mailed your payment rest assured it will get to us. The printer is picking up any envelopes received by the City of Atwater and delivering them to our office.

Keith Williams
Treasurer – Tax Collector – County Clerk

Source: Mariposa County