Boundary Atlas

ZIP code 54540: Land O'Lakes, WI

ZIP code 54540 is in Vilas County (99%) and Gogebic County (1.1%), Wisconsin, outside any city or Census-designated place. It is in Wisconsin's 7th congressional district (99%) and Michigan's 1st congressional district (1.1%). Its state senate districts are State Senate District 12 (99%) and State Senate District 38 (1.1%); its state house districts are Assembly District 34 (99%) and State House District 110 (1.1%).

1,048residents (2020 Census)
79.9 sq miland area
0cities and towns
2congressional districts
6voting precincts

See it on the mapAll of Wisconsin

City and county

Outside any city or Census-designated place.


CountyShare of ZIP residents
Vilas County99%
Gogebic County1.1%

Town or county subdivisionShare of ZIP residents
Land O'Lakes town89%
Phelps town9.5%
Watersmeet township1.1%
Presque Isle town0.1%
Plum Lake townland only

Congressional districts

Congressional districtShare of ZIP residents
Wisconsin's 7th congressional district (WI-07)99%
Michigan's 1st congressional district (MI-01)1.1%

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.

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1299%
State Senate District 381.1%

State house districtShare of ZIP residents
Assembly District 3499%
State House District 1101.1%

Voting precincts

6 voting precincts overlap ZIP 54540. It also crosses into MI. 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:54540")

ZIP 54540 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.