Boundary Atlas

Springfield, New Jersey

Springfield is a Census-designated place (an unincorporated community) in Union County, New Jersey, with 1,518 residents in 2020. It is in New Jersey's 7th congressional district. Its state senate district is State Senate District 21; its state house district is Assembly District 21.

1,518residents (2020 Census)
0.4 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
Union County100%

Congressional district

Congressional districtShare of residents
New Jersey's 7th congressional district (NJ-07)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (NJ-07)Thomas H. Kean, Jr. (R)202-225-5361100%
U.S. SenatorAndy Kim (D)202-224-4744statewide
U.S. SenatorCory A. Booker (D)202-224-3224 · contact formstatewide
State Senator (State Senate District 21)Jon Bramnick (R)908-232-2073100%
Assembly Member (Assembly District 21)Andrew Macurdy (Democratic)908-679-8499100%
Assembly Member (Assembly District 21)Vinnie Kearney (Democratic)908-516-2880100%

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 21100%

State house districtShare of residents
Assembly District 21100%

ZIP codes

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

Get this in your AI agent

Your agent can get Springfield'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:3470018")

Springfield 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.