Warren County, OH ZIP codes
There are 12 ZIP codes in Warren County, OH, in 12 towns, from 45005 to 45162. The largest are 45040 (Mason), 45036 (Lebanon) and 45005 (Franklin).
The county seat is Lebanon.
- ZIP codes
- 12
- Towns
- 12
- County seat
- Lebanon
- County FIPS
39165- State
- Ohio
- Population
- 250,008
- Median household income
- $110,132
- Land area
- 401 sq mi
- Metro area
- Cincinnati
Warren County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Warren County ZIP codes
The ZIP codes of Warren County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Warren County in numbers
About 250,008 people live in Warren County, in 92,052 households, the 10th most populous of Ohio's 88 counties. The median household income is $110,132 a year, 54% above the Ohio median of $71,389 (US: $80,734). The median owner-occupied home is valued at $349,400 (63% above the Ohio median), and median gross rent is $1,361 a month. The median age is 40.1; 45.6% of adults 25 and over hold a bachelor's degree or higher (31.5% across Ohio); the average commute takes 25 minutes.
| Population | 250,008 |
|---|---|
| Households | 92,052 |
| Median age | 40.1 |
| Median household income | $110,132 |
| Median home value | $349,400 |
| Median gross rent | $1,361 |
| Bachelor's degree or higher | 45.6% |
| Mean commute | 25.3 min |
| Population density | 623 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Warren County
| Town | ZIP codes | Population |
|---|---|---|
| Mason | 1 | 35,509 |
| Lebanon | 1 | 21,501 |
| Springboro | 1 | 19,980 |
| Franklin | 1 | 11,712 |
| South Lebanon | 1 | 6,712 |
| Waynesville | 1 | 2,777 |
| Oregonia | 1 | 2,693 |
| Morrow | 1 | 2,523 |
| Maineville | 1 | 2,070 |
| Kings Mills | 1 | 1,175 |
| Harveysburg | 1 | 837 |
| Pleasant Plain | 1 | 190 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Warren County.
- Hamilton County (78)
- Montgomery County (46)
- Butler County (20)
- Clermont County (16)
- Greene County (17)
- Brown County (12)
- Clinton County (10)
- Preble County (11)
Not sure you are in Warren County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Warren County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
45005 | Franklin , OH | Standard | 32,251 | $75,399 | $218,600 |
45032 | Harveysburg , OH | Standard | 683 | $66,618 | $163,500 |
45034 | Kings Mills , OH | Standard | 968 | $151,875 | $323,900 |
45036 | Lebanon , OH | Standard | 42,204 | $99,128 | $352,200 |
45039 | Maineville , OH | Standard | 28,335 | $108,794 | $327,200 |
45040 | Mason , OH | Standard | 59,518 | $133,240 | $440,000 |
45054 | Oregonia , OH | Standard | 2,693 | $99,583 | $296,200 |
45065 | South Lebanon , OH | Standard | 7,053 | $104,795 | $312,300 |
45066 | Springboro , OH | Standard | 27,545 | $131,250 | $393,500 |
45068 | Waynesville , OH | Standard | 11,597 | $96,147 | $335,600 |
45152 | Morrow , OH | Standard | 14,850 | $123,366 | $351,700 |
45162 | Pleasant Plain , OH | Standard | 2,754 | $84,722 | $216,500 |
Cite this page
zipcodes.pro. “Warren County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/oh/county/warren
Underlying data is public domain or openly licensed — sources, vintages and licences.