Boundary Atlas

Baltimore, Maryland

Baltimore is a city in Baltimore city, Maryland, with 585,708 residents in 2020. It spans 2 congressional districts: MD-07 (95%) and MD-02 (5.2%). It spans 5 state senate and 5 state house districts.

585,708residents (2020 Census)
80.9 sq miland area
32ZIP codes
2congressional districts

County

CountyShare of residents
Baltimore city100%

Congressional districts

Congressional districtShare of residents
Maryland's 7th congressional district (MD-07)95%
Maryland's 2nd congressional district (MD-02)5.2%

Elected officials

OfficeMemberContactShare of residents
MayorBrandon M. Scott410-545-0778citywide
U.S. Representative (MD-07)Kweisi Mfume (D)202-225-474195%
U.S. Representative (MD-02)Johnny Olszewski, Jr. (D)202-225-30615.2%
U.S. SenatorAngela D. Alsobrooks (D)202-224-4524 · contact formstatewide
U.S. SenatorChris Van Hollen (D)202-224-4654 · contact formstatewide

Plus 19 state legislators across 10 districts. Look up an address for the exact ones.

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); 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 4622%
State Senate District 4121%
State Senate District 4521%
State Senate District 4021%
State Senate District 4314%

State house districtShare of residents
State Legislative District 4622%
State Legislative District 4121%
State Legislative District 4521%
State Legislative District 4021%
State Legislative Subdistrict 43A14%

ZIP codes

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

Get this in your AI agent

Your agent can get Baltimore'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:2404000")

Baltimore here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.