Aberdeen Proving Ground, Maryland
Aberdeen Proving Ground is a Census-designated place (an unincorporated community) in Harford County, Maryland, with 1,668 residents in 2020. It is in Maryland's 1st congressional district. Its state senate district is State Senate District 34; its state house district is State Legislative Subdistrict 34A.
County
| County | Share of residents |
|---|---|
| Harford County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Maryland's 1st congressional district (MD-01) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MD-01) | Andy Harris (R) | 202-225-5311 | 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 34) | Mary-Dulany James (Democratic) | 100% | |
| Delegate (State Legislative Subdistrict 34A) | Andre Johnson (Democratic) | 100% | |
| Delegate (State Legislative Subdistrict 34A) | Steve Johnson (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
- Aberdeen Proving Ground website: https://home.army.mil/apg/index.php
- Aberdeen Proving Ground laws: search for the Aberdeen Proving Ground, Maryland code of ordinances
- Harford County website: https://www.harfordcountymd.gov/
- Harford County laws: search for the Harford County, Maryland code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 34 | 100% |
| State house district | Share of residents |
|---|---|
| State Legislative Subdistrict 34A | 100% |
ZIP codes
Percentages mark ZIPs only partly in Aberdeen Proving Ground: the share of that ZIP's residents living in it.
- 21005 (98%)
Get this in your AI agent
Your agent can get Aberdeen Proving Ground's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:2400175")
Aberdeen Proving Ground here is the Census Bureau's place boundary as of January 1, 2025 (a Census-designated place, which has no municipal government). Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.