ZIP code 63557: Baker, MO
ZIP code 63557 is in Linn County (70%), Macon County (24%), Sullivan County (5.2%) and Adair County (0.8%), Missouri, outside any city or Census-designated place. It is in Missouri's 6th congressional district. Its state senate districts are State Senate District 12 (76%) and State Senate District 18 (24%); its state house districts are State House District 7 (70%), State House District 6 (24%) and State House District 3 (6.0%).
See it on the mapAll of Missouri
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Linn County | 70% |
| Macon County | 24% |
| Sullivan County | 5.2% |
| Adair County | 0.8% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Baker township | 47% |
| North Salem township | 24% |
| Drake township | 19% |
| Morris township | 5.2% |
| White township | 4.9% |
| Walnut township | 0.8% |
| Grantsville township | land only |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Missouri's 6th congressional district (MO-06) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MO-06) | Sam Graves (R) | 202-225-7041 | 100% |
| U.S. Senator | Eric Schmitt (R) | 202-224-5721 · contact form | statewide |
| U.S. Senator | Josh Hawley (R) | 202-224-6154 · contact form | statewide |
| State Senator (State Senate District 12) | Rusty Black (R) | 76% | |
| State Senator (State Senate District 18) | Cindy O'Laughlin (R) | 24% | |
| State Representative (State House District 7) | Peggy McGaugh (R) | 70% | |
| State Representative (State House District 6) | Ed Lewis (R) | 24% | |
| State Representative (State House District 3) | Danny Busick (R) | 6.0% |
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
- Linn County website: https://linncomo.com/
- Linn County laws: search for the Linn County, Missouri code of ordinances
- Macon County website: http://www.maconcountymo.com
- Macon County laws: search for the Macon County, Missouri code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 12 | 76% |
| State Senate District 18 | 24% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 7 | 70% |
| State House District 6 | 24% |
| State House District 3 | 6.0% |
Voting precincts
6 voting precincts overlap ZIP 63557. 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:63557")
ZIP 63557 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.