18 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 29223 | Columbia | 51,354 |
| 29229 | Columbia | 49,097 |
| 29203 | Columbia | 41,205 |
| 29210 | Columbia | 40,923 |
| 29063 | Irmo | 38,754 |
| 29209 | Columbia | 36,979 |
| 29016 | Blythewood | 29,154 |
| 29201 | Columbia | 22,938 |
| 29205 | Columbia | 22,861 |
| 29206 | Columbia | 18,746 |
| 29204 | Columbia | 18,034 |
| 29061 | Hopkins | 12,569 |
| 29207 | Columbia | 9,963 |
| 29044 | Eastover | 4,208 |
| 29052 | Gadsden | 2,479 |
| 29208 | Columbia | 2,281 |
| 29225 | Columbia | 401 |
| 29177 | White Rock | 176 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 18 ZCTAs in Richland County, South Carolina (US Census).