Boundary Atlas

ZIP code 21144: Severn, MD

ZIP code 21144 is in Severn (92% of residents), Gambrills (3.9%) and Odenton (3.6%), in Anne Arundel County, Maryland. It is in Maryland's 3rd congressional district (96%) and Maryland's 5th congressional district (3.6%). Its state senate districts are State Senate District 32 (61%), State Senate District 31 (36%) and State Senate District 33 (3.6%); its state house districts are State Legislative District 32 (61%), State Legislative District 31 (36%) and State Legislative Subdistrict 33A (3.6%).

37,295residents (2020 Census)
16.5 sq miland area
3cities and towns
2congressional districts
14voting precincts

See it on the mapAll of Maryland

City and county

City or townShare of ZIP residents
Severn92%
Gambrills3.9%
Odenton3.6%

CountyShare of ZIP residents
Anne Arundel County100%

Town or county subdivisionShare of ZIP residents
District 242%
District 134%
District 418%
District 56.2%

Congressional districts

Congressional districtShare of ZIP residents
Maryland's 3rd congressional district (MD-03)96%
Maryland's 5th congressional district (MD-05)3.6%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MD-03)Sarah Elfreth (D)202-225-401696%
U.S. Representative (MD-05)Steny H. Hoyer (D)202-225-41313.6%
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 32)Pam Beidle (Democratic)61%
State Senator (State Senate District 31)Bryan Simonaire (R)36%
State Senator (State Senate District 33)Dawn Gile (Democratic)3.6%
Delegate (State Legislative District 32)Mark Chang (Democratic)61%
Delegate (State Legislative District 32)Mike Rogers (Democratic)61%
Delegate (State Legislative District 32)Sandy Bartlett (Democratic)61%
Delegate (State Legislative District 31)Brian Chisholm (R)36%
Delegate (State Legislative District 31)LaToya Nkongolo (R)36%
Delegate (State Legislative District 31)Nic Kipke (R)36%
Delegate (State Legislative Subdistrict 33A)Andrew Pruski (Democratic)3.6%

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 ZIP residents
State Senate District 3261%
State Senate District 3136%
State Senate District 333.6%

State house districtShare of ZIP residents
State Legislative District 3261%
State Legislative District 3136%
State Legislative Subdistrict 33A3.6%

Voting precincts

14 voting precincts overlap ZIP 21144. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:21144")

ZIP 21144 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.