San Mateo County, California Not your city or county?

For Pet Owners

Email Customer Service
Call Customer Service:
1-866-925-5906

November 2026 is Pet License Amnesty Month! All late and penalty fees will be waived between November 1st and November 30th for both online and mail-in payments. Don't miss this limited time opportunity!

Mailing Address

Please mail all required paperwork, along with your check or money order payable to "San Mateo County Animal Licensing" to the address below. Please do not send cash.

San Mateo County Animal Licensing
c/o PetData
PO Box 141929
Irving, TX 75014-1929

Download License Application (PDF format)
*To use as an electronic fillable form, open in Adobe Reader.

Solicitud de Licencia
*To use as an electronic fillable form, open in Adobe Reader.