Boundary Atlas

ZIP code 19703: Claymont, DE

ZIP code 19703 is in Claymont (61% of residents), in New Castle County, Delaware. 39% of its residents live outside city limits. It is in Delaware's at-large congressional district. Its state senate districts are State Senate District 5 (94%) and State Senate District 1 (5.7%); its state house district is State Representative District 7.

16,175residents (2020 Census)
4.0 sq miland area
1cities and towns
1congressional district
11voting precincts

See it on the mapAll of Delaware

City and county

City or townShare of ZIP residents
Claymont61%

CountyShare of ZIP residents
New Castle County100%

Town or county subdivisionShare of ZIP residents
Brandywine CCD100%

Congressional district

Congressional districtShare of ZIP residents
Delaware's at-large congressional district (DE-AL)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (DE-AL)Sarah McBride (D)202-225-4165100%
U.S. SenatorChristopher A. Coons (D)202-224-5042 · contact formstatewide
U.S. SenatorLisa Blunt Rochester (D)202-224-2441statewide
State Senator (State Senate District 5)Ray Seigfried (Democratic)94%
State Senator (State Senate District 1)Dan Cruce (Democratic)5.7%
State Representative (State Representative District 7)Larry Lambert (Democratic)100%

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 594%
State Senate District 15.7%

State house districtShare of ZIP residents
State Representative District 7100%

Voting precincts

11 voting precincts overlap ZIP 19703. 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:19703")

ZIP 19703 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.