ZIP code 57315: Avon, SD

ZIP code 57315 is in Avon (58% of residents), in Bon Homme County (99%) and Charles Mix County (0.9%), South Dakota. 42% of its residents live outside city limits. It is in South Dakota's at-large congressional district. Its state senate districts are State Senate District 19 (99%) and State Senate District 21 (0.9%); its state house districts are State House District 19 (99%) and State House District 21 (0.9%).

1,012residents (2020 Census)

129.8 sq miland area

1cities and towns

1congressional district

5voting precincts

See it on the map All of South Dakota

City and county

City or town	Share of ZIP residents
Avon	58%

County	Share of ZIP residents
Bon Homme County	99%
Charles Mix County	0.9%

Town or county subdivision	Share of ZIP residents
Avon city	58%
Northwest Bon Homme UT	23%
Southwest Bon Homme UT	19%
Rouse township	0.8%
Lone Tree township	0.1%

Congressional district

Congressional district	Share of ZIP 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 19)	Kyle Schoenfish (R)		99%
State Senator (State Senate District 21)	MyKala Voita (R)		0.9%
State Representative (State House District 19)	Drew Peterson (R)		99%
State Representative (State House District 19)	Jessica Bahmuller (R)		99%
State Representative (State House District 21)	Jim Halverson (R)		0.9%
State Representative (State House District 21)	Marty Overweg (R)		0.9%

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

Avon website: https://www.cityofavon.org/
Avon laws: search for the Avon, South Dakota code of ordinances
Bon Homme County website: http://bonhomme.sdcounties.org
Bon Homme County laws: search for the Bon Homme County, South Dakota code of ordinances
Charles Mix County website: http://charlesmix.sdcounties.org
Charles Mix County laws: search for the Charles Mix County, South Dakota code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 19	99%
State Senate District 21	0.9%

State house district	Share of ZIP residents
State House District 19	99%
State House District 21	0.9%

Voting precincts

5 voting precincts overlap ZIP 57315. 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:57315")

ZIP 57315 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.