ZIP code 55040: Isanti, MN
ZIP code 55040 is in Isanti (49% of residents), in Isanti County (100%) and Anoka County (0.4%), Minnesota. 51% of its residents live outside city limits. It is in Minnesota's 8th congressional district (100%) and Minnesota's 6th congressional district (0.4%). Its state senate districts are State Senate District 28 (72%), State Senate District 31 (15%) and State Senate District 27 (13%); its state house districts are State House District 28A (72%), State House District 31B (15%) and State House District 27B (13%).
See it on the mapAll of Minnesota
City and county
| City or town | Share of ZIP residents |
|---|---|
| Isanti | 49% |
| St. Francis | 0.4% |
| County | Share of ZIP residents |
|---|---|
| Isanti County | 100% |
| Anoka County | 0.4% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Isanti city | 49% |
| Bradford township | 17% |
| Athens township | 15% |
| Stanford township | 10% |
| Isanti township | 5.5% |
| Spencer Brook township | 2.4% |
| St. Francis city | 0.4% |
| North Branch township | 0.4% |
| Oxford township | 0.2% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Minnesota's 8th congressional district (MN-08) | 100% |
| Minnesota's 6th congressional district (MN-06) | 0.4% |
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.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MN-08) | Pete Stauber (R) | 202-225-6211 | 100% |
| U.S. Representative (MN-06) | Tom Emmer (R) | 202-225-2331 | 0.4% |
| U.S. Senator | Amy Klobuchar (D) | 202-224-3244 · contact form | statewide |
| U.S. Senator | Tina Smith (D) | 202-224-5641 · contact form | statewide |
| State Senator (State Senate District 28) | Mark Koran (R) | 72% | |
| State Senator (State Senate District 31) | Cal Bahr (R) | 15% | |
| State Senator (State Senate District 27) | Andrew Mathews (R) | 13% | |
| State Representative (State House District 28A) | Jimmy Gordon (R) | 72% | |
| State Representative (State House District 31B) | Peggy Scott (R) | 15% | |
| State Representative (State House District 27B) | Bryan Lawrence (R) | 13% |
Elected under MN's previous legislative map; the district's lines changed for 2026.
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
- Isanti website: http://www.cityofisanti.us
- Isanti laws: search for the Isanti, Minnesota code of ordinances
- Isanti County website: http://www.co.isanti.mn.us
- Isanti County laws: search for the Isanti County, Minnesota code of ordinances
- Anoka County website: http://www.co.anoka.mn.us
- Anoka County laws: search for the Anoka County, Minnesota code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 28 | 72% |
| State Senate District 31 | 15% |
| State Senate District 27 | 13% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 28A | 72% |
| State House District 31B | 15% |
| State House District 27B | 13% |
Voting precincts
10 voting precincts overlap ZIP 55040. 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:55040")
ZIP 55040 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.