Boundary Atlas

ZIP code 57322: Shamrock Colony, SD

ZIP code 57322 is in Shamrock Colony (29% of residents), in Beadle County (63%), Clark County (27%) and Spink County (10%), South Dakota. 71% 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 22 (96%) and State Senate District 4 (3.9%); its state house districts are State House District 22 (96%) and State House District 4 (3.9%).

308residents (2020 Census)
168.3 sq miland area
1cities and towns
1congressional district
4voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Shamrock Colony29%

CountyShare of ZIP residents
Beadle County63%
Clark County27%
Spink County10%

Town or county subdivisionShare of ZIP residents
Barrett township35%
Richland township20%
Milford township17%
Union township8.8%
Foster township7.1%
Lake Byron township4.5%
Rosedale township3.6%
Fordham township3.2%
Antelope township1.3%
Hague township0.3%

Congressional district

Congressional districtShare of ZIP 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 22)Brandon Wipf (R)96%
State Senator (State Senate District 4)Stephanie Sauder (R)3.9%
State Representative (State House District 22)Kevin Van Diepen (R)96%
State Representative (State House District 22)Lana Greenfield (R)96%
State Representative (State House District 4)Dylan Jordan (R)3.9%
State Representative (State House District 4)Kent Roe (R)3.9%

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2296%
State Senate District 43.9%

State house districtShare of ZIP residents
State House District 2296%
State House District 43.9%

Voting precincts

4 voting precincts overlap ZIP 57322. Map them, with each precinct's share of the ZIP's residents.

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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:57322")

ZIP 57322 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.