54 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 45238 | Cincinnati | 47,154 |
| 45231 | Cincinnati | 41,466 |
| 45211 | Cincinnati | 37,303 |
| 45215 | Cincinnati | 31,006 |
| 45239 | Cincinnati | 29,506 |
| 45240 | Cincinnati | 29,219 |
| 45244 | Cincinnati | 28,702 |
| 45230 | Cincinnati | 27,437 |
| 45236 | Cincinnati | 24,504 |
| 45247 | Cincinnati | 24,072 |
| 45248 | Cincinnati | 24,051 |
| 45241 | Cincinnati | 23,727 |
| 45237 | Cincinnati | 22,067 |
| 45255 | Cincinnati | 22,012 |
| 45242 | Cincinnati | 21,990 |
| 45212 | Cincinnati | 21,335 |
| 45030 | Harrison | 21,196 |
| 45224 | Cincinnati | 20,915 |
| 45251 | Cincinnati | 20,834 |
| 45219 | Cincinnati | 19,505 |
| 45205 | Cincinnati | 19,087 |
| 45227 | Cincinnati | 18,801 |
| 45208 | Cincinnati | 17,911 |
| 45202 | Cincinnati | 16,259 |
| 45243 | Cincinnati | 16,034 |
| 45233 | Cincinnati | 14,976 |
| 45220 | Cincinnati | 14,651 |
| 45249 | Cincinnati | 14,075 |
| 45002 | Cleves | 14,068 |
| 45229 | Cincinnati | 13,453 |
| 45246 | Cincinnati | 13,323 |
| 45223 | Cincinnati | 12,556 |
| 45213 | Cincinnati | 11,673 |
| 45206 | Cincinnati | 10,689 |
| 45209 | Cincinnati | 10,408 |
| 45225 | Cincinnati | 9,414 |
| 45214 | Cincinnati | 8,965 |
| 45216 | Cincinnati | 8,900 |
| 45232 | Cincinnati | 8,805 |
| 45204 | Cincinnati | 7,271 |
| 45207 | Cincinnati | 6,801 |
| 45217 | Cincinnati | 6,096 |
| 45226 | Cincinnati | 5,858 |
| 45252 | Cincinnati | 5,287 |
| 45052 | North Bend | 4,179 |
| 45218 | Cincinnati | 3,838 |
| 45203 | Cincinnati | 2,498 |
| 45174 | Terrace Park | 2,165 |
| 45001 | Addyston | 896 |
| 45033 | Hooven | 512 |
| 45051 | Mount Saint Joseph | 388 |
| 45111 | Camp Dennison | 363 |
| 45041 | Miamitown | 136 |
| 45267 | Cincinnati | 4 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 54 ZCTAs in Hamilton County, Ohio (US Census).