ZIP code 20842: District 11, MD
ZIP code 20842 is in Montgomery County (84%) and Frederick County (16%), Maryland, outside any city or Census-designated place. It is in Maryland's 6th congressional district. Its state senate districts are State Senate District 15 (84%) and State Senate District 4 (16%); its state house districts are State Legislative District 15 (84%) and State Legislative District 4 (16%).
See it on the mapAll of Maryland
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Montgomery County | 84% |
| Frederick County | 16% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| District 11 | 63% |
| District 3 | 21% |
| District 7, Urbana | 13% |
| District 1, Buckeystown | 3.3% |
| District 2 | 0.5% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Maryland's 6th congressional district (MD-06) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MD-06) | April McClain Delaney (D) | 202-225-2721 | 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 15) | Brian Feldman (Democratic) | 84% | |
| State Senator (State Senate District 4) | Bill Folden (R) | 16% | |
| Delegate (State Legislative District 15) | David Fraser-Hidalgo (Democratic) | 84% | |
| Delegate (State Legislative District 15) | Lily Qi (Democratic) | 84% | |
| Delegate (State Legislative District 15) | Linda Foley (Democratic) | 84% | |
| Delegate (State Legislative District 4) | April Miller (R) | 16% | |
| Delegate (State Legislative District 4) | Barrie Ciliberti (R) | 16% | |
| Delegate (State Legislative District 4) | Jesse Pippy (R) | 16% |
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
- Montgomery County website: https://www.montgomerycountymd.gov/
- Montgomery County laws: search for the Montgomery County, Maryland code of ordinances
- Frederick County website: http://FrederickCountyMD.gov/
- Frederick County laws: search for the Frederick County, Maryland code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 15 | 84% |
| State Senate District 4 | 16% |
| State house district | Share of ZIP residents |
|---|---|
| State Legislative District 15 | 84% |
| State Legislative District 4 | 16% |
Voting precincts
6 voting precincts overlap ZIP 20842. 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:20842")
ZIP 20842 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.