ZIP code 55920: Byron, MN
ZIP code 55920 is in Byron (74% of residents), in Olmsted County, Minnesota. 26% of its residents live outside city limits. It is in Minnesota's 1st congressional district. Its state senate districts are State Senate District 24 (99%) and State Senate District 20 (1.0%); its state house districts are State House District 24A (99%) and State House District 20B (1.0%).
See it on the mapAll of Minnesota
City and county
| City or town | Share of ZIP residents |
|---|---|
| Byron | 74% |
| County | Share of ZIP residents |
|---|---|
| Olmsted County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Byron city | 74% |
| Salem township | 11% |
| Kalmar township | 11% |
| Rock Dell township | 2.1% |
| New Haven township | 1.0% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Minnesota's 1st congressional district (MN-01) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MN-01) | Brad Finstad (R) | 202-225-2472 | 100% |
| 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 24) | Carla Nelson (R) | 99% | |
| State Senator (State Senate District 20) | Steve Drazkowski (R) | 1.0% | |
| State Representative (State House District 24A) | Duane Quam (R) | 99% | |
| State Representative (State House District 20B) | Steve Jacob (R) | 1.0% |
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
- Byron website: https://www.byronmn.com
- Byron laws: search for the Byron, Minnesota code of ordinances
- Olmsted County website: http://www.co.olmsted.mn.us
- Olmsted County laws: search for the Olmsted County, Minnesota code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 24 | 99% |
| State Senate District 20 | 1.0% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 24A | 99% |
| State House District 20B | 1.0% |
Voting precincts
6 voting precincts overlap ZIP 55920. 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:55920")
ZIP 55920 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.