Cairo, OH zip code
Cairo, Ohio uses one zip code: 45820. Most of it is in Allen County. Together these zip codes are home to about 581 people.
Zip codes
1
Population
581
All zips combined
Largest zip
45820
581 residents
Zip codes in Cairo
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 45820 | 581 | $83,125 |