Regionenliste
- 29220 - Baptist Medical Center, Columbia, Richland, South Carolina
- 29215 - Bell South, Columbia, Richland, South Carolina
- 29219 - Blue Cross Blue Shield OD Sc, Columbia, Richland, South Carolina
- 29217 - City of Columbia, Columbia, Richland, South Carolina
- 29202 - Columbia, Richland, South Carolina
- 29203 - Columbia, Richland, South Carolina
- 29204 - Columbia, Richland, South Carolina
- 29205 - Columbia, Richland, South Carolina
- 29206 - Columbia, Richland, South Carolina
- 29207 - Columbia, Richland, South Carolina
- 29209 - Columbia, Richland, South Carolina
- 29210 - Columbia, Richland, South Carolina
- 29211 - Columbia, Richland, South Carolina
- 29221 - Columbia, Richland, South Carolina
- 29222 - Columbia, Richland, South Carolina
- 29223 - Columbia, Richland, South Carolina
- 29224 - Columbia, Richland, South Carolina
- 29229 - Columbia, Richland, South Carolina
- 29230 - Columbia, Richland, South Carolina
- 29240 - Columbia, Richland, South Carolina