Boundary Atlas

Hillandale, Maryland

Hillandale is a Census-designated place (an unincorporated community) in Montgomery County (61% of residents) and Prince George's County (39%), Maryland, with 5,774 residents in 2020. It spans 2 congressional districts: MD-08 (61%) and MD-04 (39%). It spans 3 state senate and 3 state house districts.

5,774residents (2020 Census)
1.9 sq miland area
2ZIP codes
2congressional districts

County

CountyShare of residents
Montgomery County61%
Prince George's County39%

Congressional districts

Congressional districtShare of residents
Maryland's 8th congressional district (MD-08)61%
Maryland's 4th congressional district (MD-04)39%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MD-08)Jamie Raskin (D)202-225-534161%
U.S. Representative (MD-04)Glenn Ivey (D)202-225-869939%
U.S. SenatorAngela D. Alsobrooks (D)202-224-4524 · contact formstatewide
U.S. SenatorChris Van Hollen (D)202-224-4654 · contact formstatewide
State Senator (State Senate District 20)Will Smith (Democratic)61%
State Senator (State Senate District 47)Malcolm Augustine (Democratic)37%
State Senator (State Senate District 21)Jim Rosapepe (Democratic)2.2%
Delegate (State Legislative District 20)David Moon (Democratic)61%
Delegate (State Legislative District 20)Jheanelle Wilkins (Democratic)61%
Delegate (State Legislative District 20)Lorig Charkoudian (Democratic)61%
Delegate (State Legislative Subdistrict 47B)Deni Taveras (Democratic)37%
Delegate (State Legislative District 21)Ben Barnes (Democratic)2.2%
Delegate (State Legislative District 21)Joseline Peña-Melnyk (Democratic)2.2%
Delegate (State Legislative District 21)Mary Lehman (Democratic)2.2%

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

State legislative districts

State senate districtShare of residents
State Senate District 2061%
State Senate District 4737%
State Senate District 212.2%

State house districtShare of residents
State Legislative District 2061%
State Legislative Subdistrict 47B37%
State Legislative District 212.2%

ZIP codes

Percentages mark ZIPs only partly in Hillandale: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Hillandale'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:2438850")

Hillandale 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.