Boundary Atlas

ZIP code 52568: Martinsburg, IA

ZIP code 52568 is in Martinsburg, in Keokuk County, Iowa. It is in Iowa's 1st congressional district. Its state senate district is State Senate District 44; its state house district is State House District 88.

97residents (2020 Census)
0.3 sq miland area
1cities and towns
1congressional district
1voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Martinsburg100%

CountyShare of ZIP residents
Keokuk County100%

Town or county subdivisionShare of ZIP residents
Steady Run township100%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 1st congressional district (IA-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-01)Mariannette Miller-Meeks (R)202-225-6576100%
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 44)Adrian Dickey (R)100%
State Representative (State House District 88)Helena Hayes (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 ZIP residents
State Senate District 44100%

State house districtShare of ZIP residents
State House District 88100%

Voting precincts

1 voting precinct overlap ZIP 52568. 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:52568")

ZIP 52568 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.