09/16/2026
Don’t wait until September 30th to mail your payment and expect it to get postmarked that day. If you do most likely it’ll be postmarked October 1st and interest will accrue.
The Treasurer's Offices:
Tax, 101 W 4th St, M-F 8:00am-4:30pm & Motor Vehicle, 102 E Main St, M-F 8:00am-4:15pm.
Ottumwa, IA
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