Jon A. Slater, Jr.
Auditor, Fairfield County
FIDOS - Fairfield County's Online Dog Licensing SystemFairfield County Dog Licensing


Your Account ID and Password appeared on the application you received in the mail.
If you do not have this information, try choosing "By License" below to renew using one of your past year's tag numbers.

To log in, select
  • By Account and provide your Account ID and Password, or
  • By License and provide a license year and number you own or have owned.

By Account
Account ID:

By License
Enter the Year and Number of your prior year's tag. The Year should be 2016 in most cases.

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