Welcome to Clairmont County, Ohio
Clairmont County was organized in 1818 from portions of Washington and Gallia counties and is home to approximately 34,000 residents across twelve townships and five incorporated villages. The county seat is Marbury. County government provides services ranging from road and bridge maintenance to public health, elections, property taxation, human services, and the courts.
This website is provided by the Board of County Commissioners as a service to residents, businesses, and visitors. Use the navigation above to reach county departments and offices, the Online Services box at left for the most-requested items, or the How Do I…? page for step-by-step directions to common services.
News & Announcements
Reminder: second-half real estate taxes due Wednesday, July 22
County Treasurer Carolyn Bratton reminds property owners that second-half 2025 real estate and manufactured home taxes are due Wednesday, July …
2026 Clairmont County Fair runs August 3-8; premium books available
The 168th Clairmont County Fair will be held Monday, August 3 through Saturday, August 8 at the county fairgrounds on Fairground Rd. Premium bo…
Permit Search maintenance window scheduled for Sunday, July 19
The online Building Permit Search will be unavailable Sunday, July 19, 2026, from approximately 6:00 AM to 8:00 AM while Information Systems ap…
County offices closed Friday, July 3 for Independence Day
All Clairmont County offices, including Building & Development Services, will be closed Friday, July 3, 2026, in observance of Independence Day…
2026 property revaluation notices mailed to all parcel owners
The County Auditor has mailed tentative value notices for the 2026 sexennial reappraisal to all 41,300 parcels in the county. Property owners w…
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Commissioners’ Meetings
- Regular sessions: Tuesdays, 10:00 AM
- Commissioners’ Hearing Room, 100 Public Square, Marbury
- Agendas & minutes
Coming Up
- 07/22 — Second-half real estate taxes due
- 08/03–08/08 — Clairmont County Fair, fairgrounds
- 08/06 — Bid opening: guardrail program
- Full county calendar
Page last updated: 07/13/2026