Boundary Atlas

ZIP code 29720: Lancaster County, SC

ZIP code 29720 is in Lancaster (17% of residents), Springdale (4.6%), Elgin (4.6%), Irwin (2.6%) and Van Wyck (1.7%), in Lancaster County, South Carolina. 70% of its residents live outside city limits. It is in South Carolina's 5th congressional district. Its state senate districts are State Senate District 27 (84%), State Senate District 17 (13%) and State Senate District 16 (3.1%); its state house districts are State House District 45 (61%), State House District 53 (23%), State House District 44 (15%) and State House District 65 (1.2%).

51,198residents (2020 Census)
284.9 sq miland area
8cities and towns
1congressional district
23voting precincts

See it on the mapAll of South Carolina

City and county

City or townShare of ZIP residents
Lancaster17%
Springdale4.6%
Elgin4.6%
Irwin2.6%
Van Wyck1.7%
Buford0.8%
Unity0.6%
Tradesville0.5%

CountyShare of ZIP residents
Lancaster County100%

Town or county subdivisionShare of ZIP residents
Lancaster CCD75%
Van Wyck CCD15%
Tradesville CCD6.5%
Heath Springs CCD2.6%
Kershaw CCD<0.1%

Congressional district

Congressional districtShare of ZIP residents
South Carolina's 5th congressional district (SC-05)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2784%
State Senate District 1713%
State Senate District 163.1%

State house districtShare of ZIP residents
State House District 4561%
State House District 5323%
State House District 4415%
State House District 651.2%

Voting precincts

23 voting precincts overlap ZIP 29720. 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:29720")

ZIP 29720 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.