ZIP code 21234: Parkville, MD
ZIP code 21234 is in Parkville (43% of residents), Carney (36%), Baltimore (13%), Perry Hall (6.2%) and Overlea (1.6%), in Baltimore County (87%) and Baltimore city (13%), Maryland. It is in Maryland's 2nd congressional district (87%) and Maryland's 7th congressional district (13%). Its state senate districts are State Senate District 8 (58%), State Senate District 7 (27%), State Senate District 45 (13%) and State Senate District 43 (2.9%); its state house districts are State Legislative District 8 (58%), State Legislative Subdistrict 7A (27%), State Legislative District 45 (13%) and State Legislative Subdistrict 43B (2.9%).
See it on the mapAll of Maryland
City and county
| City or town | Share of ZIP residents |
|---|---|
| Parkville | 43% |
| Carney | 36% |
| Baltimore | 13% |
| Perry Hall | 6.2% |
| Overlea | 1.6% |
| County | Share of ZIP residents |
|---|---|
| Baltimore County | 87% |
| Baltimore city | 13% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| District 9 | 58% |
| District 11 | 21% |
| Baltimore city | 13% |
| District 14 | 8.2% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Maryland's 2nd congressional district (MD-02) | 87% |
| Maryland's 7th congressional district (MD-07) | 13% |
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.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MD-02) | Johnny Olszewski, Jr. (D) | 202-225-3061 | 87% |
| U.S. Representative (MD-07) | Kweisi Mfume (D) | 202-225-4741 | 13% |
| 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 8) | Carl Jackson (Democratic) | 58% | |
| State Senator (State Senate District 7) | J.B. Jennings (R) | 410-870-5848 | 27% |
| State Senator (State Senate District 45) | Cory McCray (Democratic) | 13% | |
| State Senator (State Senate District 43) | Mary Washington (Democratic) | 2.9% | |
| Delegate (State Legislative District 8) | Harry Bhandari (Democratic) | 410-841-3526 | 58% |
| Delegate (State Legislative District 8) | Kim Ross (Democratic) | 58% | |
| Delegate (State Legislative District 8) | Nick Allen (Democratic) | 58% | |
| Delegate (State Legislative Subdistrict 7A) | Kathy Szeliga (R) | 27% | |
| Delegate (State Legislative Subdistrict 7A) | Ryan Nawrocki (R) | 27% | |
| Delegate (State Legislative District 45) | Caylin Young (Democratic) | 13% | |
| Delegate (State Legislative District 45) | Jackie Addison (Democratic) | 13% | |
| Delegate (State Legislative District 45) | Stephanie Smith (Democratic) | 13% | |
| Delegate (State Legislative Subdistrict 43B) | Cathi Forbes (Democratic) | 2.9% |
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
- Parkville laws: search for the Parkville, Maryland code of ordinances
- Carney laws: search for the Carney, Maryland code of ordinances
- Baltimore website: https://www.baltimorecity.gov/
- Baltimore council: Baltimore City Council
- Baltimore laws: search for the Baltimore, Maryland code of ordinances
- Baltimore County website: https://www.baltimorecountymd.gov/
- Baltimore County laws: search for the Baltimore County, Maryland code of ordinances
- Baltimore city website: https://www.baltimorecity.gov/
- Baltimore city laws: search for the Baltimore city, Maryland code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 8 | 58% |
| State Senate District 7 | 27% |
| State Senate District 45 | 13% |
| State Senate District 43 | 2.9% |
| State house district | Share of ZIP residents |
|---|---|
| State Legislative District 8 | 58% |
| State Legislative Subdistrict 7A | 27% |
| State Legislative District 45 | 13% |
| State Legislative Subdistrict 43B | 2.9% |
Voting precincts
27 voting precincts overlap ZIP 21234. 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:21234")
ZIP 21234 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.