Boundary Atlas

ZIP code 29920: Beaufort County, SC

ZIP code 29920 is in Fripp Island (10% of residents) and Harbor Island (2.3%), in Beaufort County, South Carolina. 87% of its residents live outside city limits. It is in South Carolina's 1st congressional district. Its state senate district is State Senate District 43; its state house districts are State House District 121 (79%) and State House District 124 (21%).

9,214residents (2020 Census)
97.6 sq miland area
2cities and towns
1congressional district
7voting precincts

See it on the mapAll of South Carolina

City and county

City or townShare of ZIP residents
Fripp Island10%
Harbor Island2.3%

CountyShare of ZIP residents
Beaufort County100%

Town or county subdivisionShare of ZIP residents
St. Helena Island CCD100%

Congressional district

Congressional districtShare of ZIP residents
South Carolina's 1st congressional district (SC-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (SC-01)Nancy Mace (R)202-225-3176100%
U.S. SenatorDarline Graham (R)202-224-5972statewide
U.S. SenatorTim Scott (R)202-224-6121 · contact formstatewide
State Senator (State Senate District 43)Chip Campsen (R)100%
State Representative (State House District 121)Michael Rivers (Democratic)79%
State Representative (State House District 124)Shannon Erickson (R)21%

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

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 43100%

State house districtShare of ZIP residents
State House District 12179%
State House District 12421%

Voting precincts

7 voting precincts overlap ZIP 29920. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:29920")

ZIP 29920 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.