Boundary Atlas

ZIP code 87728: Maxwell, NM

ZIP code 87728 is in Maxwell (59% of residents), in Colfax County, New Mexico. 41% of its residents live outside city limits. It is in New Mexico's 3rd congressional district. Its state senate district is State Senate District 8; its state house district is State House District 40.

379residents (2020 Census)
117.4 sq miland area
1cities and towns
1congressional district
2voting precincts

See it on the mapAll of New Mexico

City and county

City or townShare of ZIP residents
Maxwell59%

CountyShare of ZIP residents
Colfax County100%

Town or county subdivisionShare of ZIP residents
Springer CCD98%
Raton CCD2.4%

Congressional district

Congressional districtShare of ZIP residents
New Mexico's 3rd congressional district (NM-03)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 8100%

State house districtShare of ZIP residents
State House District 40100%

Voting precincts

2 voting precincts overlap ZIP 87728. Map them, with each precinct's share of the ZIP's residents.

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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:87728")

ZIP 87728 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.