Boundary Atlas

Upper Montclair, New Jersey

Upper Montclair is a Census-designated place (an unincorporated community) in Essex County, New Jersey, with 13,146 residents in 2020. It is in New Jersey's 11th congressional district. Its state senate district is State Senate District 27; its state house district is Assembly District 27.

13,146residents (2020 Census)
2.4 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
Essex County100%

Congressional district

Congressional districtShare of residents
New Jersey's 11th congressional district (NJ-11)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (NJ-11)Analilia Mejia (D)202-225-5034100%
U.S. SenatorAndy Kim (D)202-224-4744statewide
U.S. SenatorCory A. Booker (D)202-224-3224 · contact formstatewide
State Senator (State Senate District 27)John McKeon (Democratic)862-930-7071100%
Assembly Member (Assembly District 27)Alixon Collazos-Gill (Democratic)973-509-0388100%
Assembly Member (Assembly District 27)Rosy Bagolie (Democratic)973-535-5017100%

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 27100%

State house districtShare of residents
Assembly District 27100%

ZIP codes

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

Get this in your AI agent

Your agent can get Upper Montclair'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:3475020")

Upper Montclair 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.