St. Onge, South Dakota
St. Onge is a Census-designated place (an unincorporated community) in Lawrence County, South Dakota, with 170 residents in 2020. It is in South Dakota's at-large congressional district. Its state senate district is State Senate District 31; its state house district is State House District 31.
County
| County | Share of residents |
|---|---|
| Lawrence County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| South Dakota's at-large congressional district (SD-AL) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (SD-AL) | Dusty Johnson (R) | 202-225-2801 | 100% |
| U.S. Senator | John Thune (R) | 202-224-2321 · contact form | statewide |
| U.S. Senator | Mike Rounds (R) | 202-224-5842 · contact form | statewide |
| State Senator (State Senate District 31) | Randy Deibert (R) | 100% | |
| State Representative (State House District 31) | Mary Fitzgerald (R) | 100% | |
| State Representative (State House District 31) | Scott Odenbach (R) | 100% |
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
- St. Onge laws: search for the St. Onge, South Dakota code of ordinances
- Lawrence County website: http://www.lawrence.sd.us
- Lawrence County laws: search for the Lawrence County, South Dakota code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 31 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 31 | 100% |
ZIP codes
Percentages mark ZIPs only partly in St. Onge: the share of that ZIP's residents living in it.
- 57779 (47%)
Get this in your AI agent
Your agent can get St. Onge's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:4657260")
St. Onge here is the Census Bureau's place boundary as of January 1, 2025 (a Census-designated place, which has no municipal government). Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.