Johnston County, Oklahoma


General Information
Assessor Last Updated: 5/1/2025
Assessor Data Date: 3/20/2025
Mapped: 95.08%
Major Cities: Tishomingo, Wapanucka, Milburn, Mannsville, Ravia, Mill Creek
Total Population: 10,990
Total Parcels: 11,696
Water Area (sq. miles): 15.00
Land Area (sq miles): 643.00
County Officials
Assessor: Guyla Hart (580) 371-3465
Collector: Rana Smith (580) 371-3082
County Clerk: Kathy Ross (580) 371-3184
Sheriff: Gary Dodd (580) 371-2646
Treasurer: Rana Smith (580) 371-3082
Millage Rates
District School City Millage
1 I-2 Rural Rural 65.84
10 Mannsville City Mannsville 79.56
11 Milburn City Milburn 75.50
2 D-7 Rural Rural 79.56
3 D-10 Rural Rural 63.04
4 I-20 Rural Rural 91.09
5 I-29 Rural Rural 75.50
6 I-35 Rural Rural 69.71
7 I-37 Rural Rural 85.37
8 JI-30 Rural Rural 98.02
9 Tishomingo City Tishomingo 91.09