Boundary Atlas

ZIP code 19940: Delmar, DE

ZIP code 19940 is in Delmar (31% of residents), in Sussex County, Delaware. 69% of its residents live outside city limits. It is in Delaware's at-large congressional district. Its state senate district is State Senate District 21; its state house districts are State Representative District 40 (99%) and State Representative District 41 (1.4%).

6,541residents (2020 Census)
41.3 sq miland area
1cities and towns
1congressional district
5voting precincts

See it on the mapAll of Delaware

City and county

City or townShare of ZIP residents
Delmar31%

CountyShare of ZIP residents
Sussex County100%

Town or county subdivisionShare of ZIP residents
Laurel-Delmar 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 21)Bryant Richardson (R)100%
State Representative (State Representative District 40)Tim Dukes (R)99%
State Representative (State Representative District 41)Rich Collins (R)1.4%

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 21100%

State house districtShare of ZIP residents
State Representative District 4099%
State Representative District 411.4%

Voting precincts

5 voting precincts overlap ZIP 19940. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:19940")

ZIP 19940 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.