Boundary Atlas

ZIP code 57703: Rapid Valley, SD

ZIP code 57703 is in Rapid Valley (48% of residents), Rapid City (37%) and Green Valley (6.2%), in Pennington County, South Dakota. 9.2% 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 35 (71%), State Senate District 30 (25%) and State Senate District 27 (4.3%); its state house districts are State House District 35 (71%), State House District 30 (25%) and State House District 27 (4.3%).

16,933residents (2020 Census)
129.8 sq miland area
5cities and towns
1congressional district
11voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Rapid Valley48%
Rapid City37%
Green Valley6.2%
Box Elder0.5%
Caputa<0.1%

CountyShare of ZIP residents
Pennington County100%

Town or county subdivisionShare of ZIP residents
Central Pennington UT55%
Rapid City city37%
Rapid City East UT7.8%
Box Elder city0.5%

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
MayorJason Salamun605-394-411037%
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 35)Greg Blanc (R)71%
State Senator (State Senate District 30)Amber Hulse (R)25%
State Senator (State Senate District 27)Red Dawn Foster (Democratic)4.3%
State Representative (State House District 35)Tina Mulally (R)71%
State Representative (State House District 35)Tony Randolph (R)71%
State Representative (State House District 30)Tim Goodwin (R)25%
State Representative (State House District 30)Trish Ladner (R)25%
State Representative (State House District 27)Liz May (R)4.3%
State Representative (State House District 27)Peri Pourier (R)4.3%

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); 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 3571%
State Senate District 3025%
State Senate District 274.3%

State house districtShare of ZIP residents
State House District 3571%
State House District 3025%
State House District 274.3%

Voting precincts

11 voting precincts overlap ZIP 57703. 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:57703")

ZIP 57703 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.