Boundary Atlas

South Carolina's 1st congressional district (SC-01)

South Carolina's 1st congressional district (SC-01) covers parts or all of Beaufort County, Berkeley County, Dorchester County, Charleston County, Jasper County and Colleton County, and 50 ZIP codes (35 wholly inside it). Its 2020 population was 731,203. This is the map in force for the November 3, 2026 election.

731,203residents (2020 Census)
6counties
50ZIP codes
377voting precincts

Who represents SC-01

OfficeMemberContact
U.S. Representative (SC-01)Nancy Mace (R)202-225-3176
U.S. SenatorDarline Graham (R)202-224-5972
U.S. SenatorTim Scott (R)202-224-6121 · contact form

Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).

Counties

CountyShare of the county's residents in SC-01
Beaufort County100%
Berkeley County100%
Dorchester County79%
Charleston County44%
Jasper County16%
Colleton County6.1%

ZIP codes

Percentages mark ZIPs only partly in SC-01: the share of that ZIP's residents inside it.

Towns

Beaufort-Port Royal CCD, Bluffton CCD, Bonneau CCD, Cordesville CCD, Cross CCD, Edisto Island CCD, Goose Creek-Hanahan CCD, Hilton Head Island CCD, James Island CCD, Johns Island CCD, Kiawah Island-Seabrook Island CCD, McClellanville CCD, Moncks Corner CCD, Mount Pleasant CCD, Sheldon CCD, St. Helena Island CCD, St. Stephen CCD, Wadmalaw Island CCD, Wando CCD, Summerville CCD, Green Pond CCD, Ridgeville CCD, Ridgeland CCD and Hendersonville CCD.

Get this in your AI agent

Your agent can draw every precinct in SC-01, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

get_boundaries(id="us:congressional_district:4501", children_level="precinct", include_districts=True)