ZIP code 19973: Seaford, DE
ZIP code 19973 is in Seaford (31% of residents) and Blades (4.6%), in Sussex County (99%) and Dorchester County (1.4%), Delaware. 64% of its residents live outside city limits. It is in Delaware's at-large congressional district (99%) and Maryland's 1st congressional district (1.4%). Its state senate districts are State Senate District 21 (76%), State Senate District 19 (18%), State Senate District 18 (3.8%) and State Senate District 37 (1.4%); its state house districts are State Representative District 39 (84%), State Representative District 35 (12%), State Representative District 40 (2.1%), State Legislative Subdistrict 37B (1.4%) and State Representative District 37 (0.4%).
See it on the mapAll of Delaware
City and county
| City or town | Share of ZIP residents |
|---|---|
| Seaford | 31% |
| Blades | 4.6% |
| Galestown | 0.4% |
| County | Share of ZIP residents |
|---|---|
| Sussex County | 99% |
| Dorchester County | 1.4% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Seaford CCD | 95% |
| Laurel-Delmar CCD | 3.1% |
| District 1, Fork | 1.4% |
| Millsboro CCD | 0.4% |
| Bridgeville-Greenwood CCD | 0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Delaware's at-large congressional district (DE-AL) | 99% |
| Maryland's 1st congressional district (MD-01) | 1.4% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 21 | 76% |
| State Senate District 19 | 18% |
| State Senate District 18 | 3.8% |
| State Senate District 37 | 1.4% |
| State house district | Share of ZIP residents |
|---|---|
| State Representative District 39 | 84% |
| State Representative District 35 | 12% |
| State Representative District 40 | 2.1% |
| State Legislative Subdistrict 37B | 1.4% |
| State Representative District 37 | 0.4% |
Voting precincts
18 voting precincts overlap ZIP 19973. It also crosses into MD. 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:19973")
ZIP 19973 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.