County treasurers, who are elected to four-year terms, serve as the local county banker, safe keeper of all taxes, and investor of local funds. The responsibilities of county treasurers include:
- Collection of local taxes, particularly the real property and personal property taxes. They are also responsible for taxes on manufactured homes, inheritance, hotel-motel, and special assessments.
- Safe keeper of taxes collected in taxing districts for the schools, cities, townships, and villages.
- Chief County Investment Officer who oversees the county's investments and provides the County with financial data, investment instruments, forecasting, and interest rate schedules.
- Prepares daily and monthly statements of deposits into the County Treasury.
- As a member of the County Board of Revisions oversees complaints of property owners who feel their property taxes are too high.
- As a member of the County Budget Commission takes an active role in approving the level of spending for the cities, townships, and schools.
Treasurers through the years:
- 2020 to 0000 Frank Grafmiller
- 2012 to 2020 Melissa Rife
- 2000 to 2012 Carolyn Frederick
- 1985 to 2000 Gene Cheney
- 1978 to 1985 Lewis Gottfried Jr.
- 1941 to 1977 Karl F Kraus
- 1937 to 0000 E.C. Richmond
- 1925 to 0000 Charles Wentz
- 1915 to 0000 Charley Ellis
- 1906 to 1907 W.A. Bristol
- 1900 to 0000 S.S. Longabaugh
- 1891 to 0000 J.H. Keare
- 1880 to 1884 George W. Freet
- 1878 to 1880 George W. Bates
- 1876 to 1878 George W. Biles
- 1874 to 1876 William Smalley
- 1869 to 1874 J.A. Hare
- 1866 to 1869 W.F. Goodbread
- 1861 to 1866 D.C. Murray
- 1857 to 1861 James Freet
- 1853 to 1857 William W. Bates
- 1845 to 1853 George Harper
- 1845 to 1845 Abner Jurey
Treasurer information was taken from 'History of Wyandot County 1884' and office documents.