ZIP code 54857: Cedar Lake, WI
ZIP code 54857 is in Barron County, Wisconsin, outside any city or Census-designated place. It is in Wisconsin's 7th congressional district. Its state senate district is State Senate District 23; its state house district is Assembly District 67.
See it on the mapAll of Wisconsin
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Barron County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Cedar Lake town | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Wisconsin's 7th congressional district (WI-07) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 23 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 67 | 100% |
Voting precincts
1 voting precinct overlap ZIP 54857. 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:54857")
ZIP 54857 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.