54 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 45238 | Cincinnati | 48,936 |
| 45231 | Cincinnati | 40,852 |
| 45211 | Cincinnati | 37,234 |
| 45215 | Cincinnati | 30,806 |
| 45240 | Cincinnati | 29,453 |
| 45239 | Cincinnati | 29,035 |
| 45244 | Cincinnati | 28,720 |
| 45230 | Cincinnati | 26,923 |
| 45236 | Cincinnati | 24,648 |
| 45247 | Cincinnati | 23,588 |
| 45241 | Cincinnati | 23,545 |
| 45248 | Cincinnati | 23,287 |
| 45255 | Cincinnati | 22,760 |
| 45242 | Cincinnati | 22,253 |
| 45224 | Cincinnati | 22,186 |
| 45030 | Harrison | 21,328 |
| 45237 | Cincinnati | 21,234 |
| 45212 | Cincinnati | 21,007 |
| 45251 | Cincinnati | 20,561 |
| 45219 | Cincinnati | 19,326 |
| 45227 | Cincinnati | 18,653 |
| 45205 | Cincinnati | 18,615 |
| 45208 | Cincinnati | 17,858 |
| 45202 | Cincinnati | 17,022 |
| 45243 | Cincinnati | 15,958 |
| 45233 | Cincinnati | 15,362 |
| 45002 | Cleves | 14,647 |
| 45220 | Cincinnati | 14,636 |
| 45249 | Cincinnati | 14,219 |
| 45229 | Cincinnati | 14,000 |
| 45246 | Cincinnati | 13,925 |
| 45223 | Cincinnati | 13,049 |
| 45213 | Cincinnati | 11,273 |
| 45209 | Cincinnati | 10,772 |
| 45206 | Cincinnati | 10,387 |
| 45216 | Cincinnati | 9,493 |
| 45225 | Cincinnati | 9,451 |
| 45214 | Cincinnati | 9,077 |
| 45204 | Cincinnati | 7,710 |
| 45232 | Cincinnati | 7,257 |
| 45207 | Cincinnati | 7,089 |
| 45226 | Cincinnati | 5,962 |
| 45217 | Cincinnati | 5,437 |
| 45252 | Cincinnati | 4,941 |
| 45052 | North Bend | 4,236 |
| 45218 | Cincinnati | 3,815 |
| 45203 | Cincinnati | 2,530 |
| 45174 | Terrace Park | 2,294 |
| 45001 | Addyston | 863 |
| 45033 | Hooven | 436 |
| 45051 | Mount Saint Joseph | 361 |
| 45111 | Camp Dennison | 238 |
| 45041 | Miamitown | 131 |
| 45267 | Cincinnati | 3 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 54 ZCTAs in Hamilton County, Ohio (US Census).