18 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 29223 | Columbia | 52,835 |
| 29229 | Columbia | 50,652 |
| 29203 | Columbia | 40,811 |
| 29210 | Columbia | 40,504 |
| 29063 | Irmo | 38,475 |
| 29209 | Columbia | 37,314 |
| 29016 | Blythewood | 29,193 |
| 29201 | Columbia | 22,955 |
| 29205 | Columbia | 22,757 |
| 29206 | Columbia | 20,054 |
| 29204 | Columbia | 18,067 |
| 29061 | Hopkins | 12,875 |
| 29207 | Columbia | 9,289 |
| 29044 | Eastover | 4,299 |
| 29208 | Columbia | 2,381 |
| 29052 | Gadsden | 2,057 |
| 29225 | Columbia | 430 |
| 29177 | White Rock | 179 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 18 ZCTAs in Richland County, South Carolina (US Census).