Post Offices List in Johnson County, Arkansas:

Clarksville Post Office	200 W Sevier St, Clarksville, AR 72830
Coal Hill Post Office	506 E Highway 64, Coal Hill, AR 72832
Hagarville Post Office	12083 Highway 123, Hagarville, AR 72839
Hartman Post Office	212 Main St, Hartman, AR 72840
Knoxville Post Office	100 Highway 315, Knoxville, AR 72845
Lamar Post Office	251 W Main St, Lamar, AR 72846
Oark Post Office	100 Highway 215, Oark, AR 72852
Ozone Post Office	101 Highway 21 N, Ozone, AR 72854