Welcome to the Butler County, Ohio Auditor's Office

The Auditor’s Office is open during regular business hours, 8 a.m. - 4:30 p.m. You're encouraged to take advantage of our website or phone us during regular business hours at 513-887-3154. The Auditor's Office will be closed Friday, Dec. 23 and Monday, Dec. 26 in observance of Christmas Eve and Christmas Day.

For the latest news from the Auditor's Office, including the recent decision by the State Board of Tax Appeals regarding the 2020 reappraisal, please visit our News Releases page.


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, two more fuel quality bills have been introduced during the current 134th General Assembly - HB 144 and SB 71. Sadly, Willsey passed away in April 2022.

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