There are 9 zip codes in Lawrence County, Ohio. The most populated is 45638, located in Ironton. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4563820,594Ironton
4568011,968South Point
4566910,237Proctorville
456197,509Chesapeake
456593,166Pedro
456452,760Kitts Hill
456781,128Scottown
45696538Willow Wood
45688166Waterloo

Zip Codes in Lawrence County, Ohio by Population (2024)