Boundary Atlas

White Marsh, Maryland

White Marsh is a Census-designated place (an unincorporated community) in Baltimore County, Maryland, with 10,287 residents in 2020. It spans 2 congressional districts: MD-02 (59%) and MD-01 (41%). It spans 2 state senate and 2 state house districts.

10,287residents (2020 Census)
5.3 sq miland area
4ZIP codes
2congressional districts

County

CountyShare of residents
Baltimore County100%

Congressional districts

Congressional districtShare of residents
Maryland's 2nd congressional district (MD-02)59%
Maryland's 1st congressional district (MD-01)41%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MD-02)Johnny Olszewski, Jr. (D)202-225-306159%
U.S. Representative (MD-01)Andy Harris (R)202-225-531141%
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 7)J.B. Jennings (R)410-870-584851%
State Senator (State Senate District 8)Carl Jackson (Democratic)49%
Delegate (State Legislative Subdistrict 7A)Kathy Szeliga (R)51%
Delegate (State Legislative Subdistrict 7A)Ryan Nawrocki (R)51%
Delegate (State Legislative District 8)Harry Bhandari (Democratic)410-841-352649%
Delegate (State Legislative District 8)Kim Ross (Democratic)49%
Delegate (State Legislative District 8)Nick Allen (Democratic)49%

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 751%
State Senate District 849%

State house districtShare of residents
State Legislative Subdistrict 7A51%
State Legislative District 849%

ZIP codes

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

Get this in your AI agent

Your agent can get White Marsh'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:2484350")

White Marsh 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.