Boundary Atlas

ZIP code 50588: Storm Lake, IA

ZIP code 50588 is in Storm Lake (85% of residents) and Lakeside (5.2%), in Buena Vista County (100%) and Sac County (0.1%), Iowa. 10% of its residents live outside city limits. It is in Iowa's 4th congressional district. Its state senate districts are State Senate District 3 (100%) and State Senate District 4 (0.1%); its state house districts are State House District 6 (99%), State House District 5 (0.5%) and State House District 7 (0.1%).

13,331residents (2020 Census)
138.8 sq miland area
2cities and towns
1congressional district
8voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Storm Lake85%
Lakeside5.2%

CountyShare of ZIP residents
Buena Vista County100%
Sac County0.1%

Town or county subdivisionShare of ZIP residents
Storm Lake city85%
Hayes township8.4%
Washington township2.6%
Grant township2.0%
Providence township1.6%
Scott township0.4%
Lincoln township0.2%
Eden township0.1%
Maple Valley township<0.1%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 4th congressional district (IA-04)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-04)Randy Feenstra (R)202-225-4426100%
U.S. SenatorChuck Grassley (R)202-224-3744 · contact formstatewide
U.S. SenatorJoni Ernst (R)202-224-3254 · contact formstatewide
State Senator (State Senate District 3)Lynn Evans (R)100%
State Senator (State Senate District 4)Tim Kraayenbrink (R)0.1%
State Representative (State House District 6)Megan Jones (R)99%
State Representative (State House District 5)Zach Dieken (R)0.5%
State Representative (State House District 7)Wendy Larson (R)0.1%

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 3100%
State Senate District 40.1%

State house districtShare of ZIP residents
State House District 699%
State House District 50.5%
State House District 70.1%

Voting precincts

8 voting precincts overlap ZIP 50588. Map them, with each precinct's share of the ZIP's residents.

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ZIP 50588 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.