Adelphi, Maryland
Adelphi is a Census-designated place (an unincorporated community) in Prince George's County, Maryland, with 16,823 residents in 2020. It is in Maryland's 4th congressional district. It spans 3 state senate and 3 state house districts.
County
| County | Share of residents |
|---|---|
| Prince George's County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Maryland's 4th congressional district (MD-04) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MD-04) | Glenn Ivey (D) | 202-225-8699 | 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 47) | Malcolm Augustine (Democratic) | 72% | |
| State Senator (State Senate District 21) | Jim Rosapepe (Democratic) | 24% | |
| State Senator (State Senate District 22) | Alonzo Washington (Democratic) | 4.0% | |
| Delegate (State Legislative Subdistrict 47B) | Deni Taveras (Democratic) | 72% | |
| Delegate (State Legislative District 21) | Ben Barnes (Democratic) | 24% | |
| Delegate (State Legislative District 21) | Joseline Peña-Melnyk (Democratic) | 24% | |
| Delegate (State Legislative District 21) | Mary Lehman (Democratic) | 24% | |
| Delegate (State Legislative District 22) | Anne Healey (Democratic) | 4.0% | |
| Delegate (State Legislative District 22) | Ashanti Martínez (Democratic) | 4.0% | |
| Delegate (State Legislative District 22) | Nicole Williams (Democratic) | 4.0% |
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
- Adelphi laws: search for the Adelphi, Maryland code of ordinances
- Prince George's County website: https://www.princegeorgescountymd.gov/
- Prince George's County laws: search for the Prince George's County, Maryland code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 47 | 72% |
| State Senate District 21 | 24% |
| State Senate District 22 | 4.0% |
| State house district | Share of residents |
|---|---|
| State Legislative Subdistrict 47B | 72% |
| State Legislative District 21 | 24% |
| State Legislative District 22 | 4.0% |
ZIP codes
Percentages mark ZIPs only partly in Adelphi: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Adelphi's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:2400400")
Adelphi 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.