ZIP code 20661: District 5, Thompkinsville, MD
ZIP code 20661 is in Charles County, Maryland, outside any city or Census-designated place. It is in Maryland's 5th congressional district. Its state senate district is State Senate District 28; its state house district is State Legislative District 28.
See it on the mapAll of Maryland
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Charles County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| District 5, Thompkinsville | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Maryland's 5th congressional district (MD-05) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MD-05) | Steny H. Hoyer (D) | 202-225-4131 | 100% |
| U.S. Senator | Angela D. Alsobrooks (D) | 202-224-4524 · contact form | statewide |
| U.S. Senator | Chris Van Hollen (D) | 202-224-4654 · contact form | statewide |
| State Senator (State Senate District 28) | Arthur Ellis (Democratic) | 100% | |
| Delegate (State Legislative District 28) | C.T. Wilson (Democratic) | 100% | |
| Delegate (State Legislative District 28) | Debra Davis (Democratic) | 100% | |
| Delegate (State Legislative District 28) | Edith Patterson (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
- Charles County website: https://www.charlescountymd.gov/
- Charles County laws: search for the Charles County, Maryland code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 28 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State Legislative District 28 | 100% |
Voting precincts
1 voting precinct overlap ZIP 20661. 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:20661")
ZIP 20661 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.