Boundary Atlas

Platte, South Dakota

Platte is a city in Charles Mix County, South Dakota, with 1,296 residents in 2020. It is in South Dakota's at-large congressional district. Its state senate district is State Senate District 21; its state house district is State House District 21.

1,296residents (2020 Census)
1.1 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
Charles Mix County100%

Congressional district

Congressional districtShare of residents
South Dakota's at-large congressional district (SD-AL)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (SD-AL)Dusty Johnson (R)202-225-2801100%
U.S. SenatorJohn Thune (R)202-224-2321 · contact formstatewide
U.S. SenatorMike Rounds (R)202-224-5842 · contact formstatewide
State Senator (State Senate District 21)MyKala Voita (R)100%
State Representative (State House District 21)Jim Halverson (R)100%
State Representative (State House District 21)Marty Overweg (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

State legislative districts

State senate districtShare of residents
State Senate District 21100%

State house districtShare of residents
State House District 21100%

ZIP codes

Percentages mark ZIPs only partly in Platte: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Platte'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:4650260")

Platte here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.