ZIP Code 45638 – Ironton, OH
Ironton, Ohio · Lawrence County · Eastern time
| ZIP code | 45638 |
|---|---|
| City | Ironton |
| State | Ohio |
| County | Lawrence CountyScioto County |
| Population | 19,982 |
| Time zone | Eastern · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 76.9 sq mi |
| Center (lat, long) | 38.5558, -82.6719 |
Area codes in this area
These are the area codes that most often serve ZIP 45638 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 45638
ZIP code 45638 is assigned to Ironton, Ohio. It crosses 2 counties; most of its land is in Lawrence County. Its Census area covers about 76.9 square miles of land. The closest neighboring ZIP is 41183 (Worthington), about 3.5 miles away.
Every address in 45638 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources