ZIP code 51248: Sanborn, IA

ZIP code 51248 is in Sanborn (76% of residents), in O'Brien County (97%) and Osceola County (2.7%), Iowa. 24% of its residents live outside city limits. It is in Iowa's 4th congressional district. Its state senate district is State Senate District 3; its state house district is State House District 5.

1,828residents (2020 Census)

79.1 sq miland area

1cities and towns

1congressional district

5voting precincts

See it on the map All of Iowa

City and county

City or town	Share of ZIP residents
Sanborn	76%

County	Share of ZIP residents
O'Brien County	97%
Osceola County	2.7%

Town or county subdivision	Share of ZIP residents
Franklin township	87%
Lincoln township	4.8%
Summit township	4.8%
Goewey township	2.7%
Center township	0.7%

Congressional district

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

Elected officials

Office	Member	Contact	Share of residents
U.S. Representative (IA-04)	Randy Feenstra (R)	202-225-4426	100%
U.S. Senator	Chuck Grassley (R)	202-224-3744 · contact form	statewide
U.S. Senator	Joni Ernst (R)	202-224-3254 · contact form	statewide
State Senator (State Senate District 3)	Lynn Evans (R)		100%
State Representative (State House District 5)	Zach Dieken (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

Sanborn website: http://www.sanborniowa.com/index.php
Sanborn laws: search for the Sanborn, Iowa code of ordinances
O'Brien County website: http://www.obriencounty.com
O'Brien County laws: search for the O'Brien County, Iowa code of ordinances
Osceola County website: http://osceolacountyia.org
Osceola County laws: search for the Osceola County, Iowa code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 3	100%

State house district	Share of ZIP residents
State House District 5	100%

Voting precincts

5 voting precincts overlap ZIP 51248. 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:51248")

ZIP 51248 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.