County ZIP codes · Ohio · FIPS 39137
Putnam County, OH ZIP Codes
Putnam County, Ohio has 21 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 20 residential and 1 for PO boxes or a single organization. 13 of the residential ones lie mainly in Putnam County and 7 mainly in a neighboring county; 13 cross the county line. Median household income ranges from $65,000 in 45833 (Delphos) to $93,144 in 45875 (Ottawa) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Putnam County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $71,473 and $86,494.
They carry 20 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 20 residential ZIP codes in Putnam County
13 ZIP codes lie mainly in Putnam County; 7 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 45875 | Ottawa | 11,547 | 113 | $93k | $230k | 100% |
| 45830 | Columbus Grove | 5,199 | 55 | $81k | $170k | 67% |
| 45856 | Leipsic | 5,042 | 49 | $87k | $165k | 96% |
| 45831 | Continental | 3,233 | 43 | $72k | $168k | 97% |
| 45844 | Fort Jennings | 3,059 | 53 | $89k | $231k | 87% |
| 45877 | Pandora | 2,562 | 96 | $69k | $179k | 90% |
| 45827 | Cloverdale | 2,186 | 34 | $85k | $203k | 86% |
| 45853 | Kalida | 1,526 | 959 | $88k | $196k | 100% |
| 45876 | Ottoville | 829 | 880 | $71k | $249k | 100% |
| 45864 | Miller City | 225 | 199 | $82k | $163k | 100% |
| 45893 | Vaughnsville | 160 | 1,046 | – | $103k | 100% |
| 45815 | Belmore | 81 | 382 | $60k | – | 100% |
| 45848 | Glandorf | 76 | 608 | $78k | $243k | 100% |
Partly in Putnam County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 45833 | Delphos | 10,919 | 151 | $65k | $161k | 9% |
| 45868 | Mount Cory | 737 | 41 | $96k | $133k | 4% |
| 45817 | Bluffton | 5,926 | 93 | $77k | $210k | 3% |
| 45849 | Grover Hill | 1,002 | 23 | $78k | $125k | 3% |
| 45873 | Oakwood | 2,414 | 46 | $62k | $160k | 1% |
| 43516 | Deshler | 2,789 | 38 | $89k | $151k | 1% |
| 43548 | New Bavaria | 832 | 34 | $97k | $175k | 1% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
13 ZIP codes of Putnam County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Putnam | Elsewhere |
|---|---|---|
| 45833 | 9% | Allen County 46%; Van Wert County 45% |
| 45817 | 3% | Allen County 50%; Hancock County 47% |
| 45830 | 67% | Allen County 33% |
| 45856 | 96% | Henry County 3%; Hancock County 1% |
| 45831 | 97% | Defiance County 2% |
| 45844 | 87% | Van Wert County 8%; Allen County 5% |
| 43516 | 1% | Henry County 68%; Wood County 27%; Hancock County 4% |
| 45877 | 90% | Allen County 9% |
| 45873 | 1% | Paulding County 99% |
| 45827 | 86% | Paulding County 14% |
| 45849 | 3% | Paulding County 74%; Van Wert County 23% |
| 43548 | 1% | Henry County 86%; Defiance County 12% |
| 45868 | 4% | Hancock County 96% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 45837 | Dupont |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Putnam County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Putnam County's ZIP codes use 2 prefixes: 435 and 458.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.