ZIP code 21790: District 1, Buckeystown, MD
ZIP code 21790 is in Frederick County, Maryland, outside any city or Census-designated place. It is in Maryland's 6th congressional district. Its state senate district is State Senate District 4; its state house district is State Legislative District 4.
See it on the mapAll of Maryland
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Frederick County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| District 1, Buckeystown | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Maryland's 6th congressional district (MD-06) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 4 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State Legislative District 4 | 100% |
Voting precincts
1 voting precinct overlap ZIP 21790. 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:21790")
ZIP 21790 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.