Welcome to the Butler County, Ohio Auditor's Office

The Auditor’s Office will remain open during regular business hours, 8 a.m-4:30 p.m. We have reduced face-to-face contact with the public but have set up a document drop off zone on the third floor.

Dog tag sales are available online here or through a local business agent.  To see the list of agents, click on the Dogs menu above and then select Dog Tag Agent List.

We encourage people to take advantage of our website or phone us during regular business hours at 513-887-3154.


Butler County Auditor Roger Reynolds addresses the media on Feb. 24, 2020 to advocate for House Bill 499 and fuel quality testing. The bipartisan bill, introduced by Reps. George Lang and Brigid Kelly, would allow county auditors the authority to test fuel for octane level, water and sediment. Also pictured are Ross Twp. Trustee Tom Willsey, Reily Twp. Trustee Nick Schwab, Lang and Kelly. Although the bill never received a vote, we expect another fuel quality bill to be introduced during the current 134th General Assembly.

While our office strives to provide the public with the most current and accurate data, the contents herein are not updated in real-time and may not reflect the most recent changes.  Butler County does not assume any liability associated with the use of misuse of this data.

Butler County Auditor
130 High Street
Hamilton, OH  45011

Map Location


Board of Commissioners

Office Hours
8:00 AM - 4:30 PM, Mon. - Fri.

Conveyance Desk
closes daily at 3:30 PM

Phone: 513-887-3154