Boundary Atlas

ZIP code 45044: Middletown, OH

ZIP code 45044 is in Middletown (55% of residents), Monroe (5.7%) and Four Bridges (5.6%), in Butler County (96%) and Warren County (4.4%), Ohio. 33% of its residents live outside city limits. It is in Ohio's 10th congressional district (61%), Ohio's 8th congressional district (35%) and Ohio's 1st congressional district (4.4%). Its state senate districts are State Senate District 4 (96%) and State Senate District 7 (4.4%); its state house districts are State House District 46 (96%), State House District 55 (2.4%) and State House District 56 (2.0%).

56,128residents (2020 Census)
37.8 sq miland area
3cities and towns
3congressional districts
52voting precincts

See it on the mapAll of Ohio

City and county

City or townShare of ZIP residents
Middletown55%
Monroe5.7%
Four Bridges5.6%

CountyShare of ZIP residents
Butler County96%
Warren County4.4%

Town or county subdivisionShare of ZIP residents
Middletown city53%
Liberty township34%
Lemon township8.1%
Turtlecreek township3.6%
Franklin township0.9%

Congressional districts

Congressional districtShare of ZIP residents
Ohio's 10th congressional district (OH-10)61%
Ohio's 8th congressional district (OH-08)35%
Ohio's 1st congressional district (OH-01)4.4%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (OH-10)Michael R. Turner (R)202-225-646561%
U.S. Representative (OH-08)Warren Davidson (R)202-225-620535%
U.S. Representative (OH-01)Greg Landsman (D)202-225-22164.4%
U.S. SenatorBernie Moreno (R)202-224-2315statewide
U.S. SenatorJon Husted (R)202-224-3353statewide
State Senator (State Senate District 4)George Lang (R)96%
State Senator (State Senate District 7)Steve Wilson (R)4.4%
State Representative (State House District 46)Thomas Hall (R)96%
State Representative (State House District 55)Michelle Teska (R)2.4%
State Representative (State House District 56)Adam Mathews (R)2.0%

Elected in 2024 under OH's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).

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 496%
State Senate District 74.4%

State house districtShare of ZIP residents
State House District 4696%
State House District 552.4%
State House District 562.0%

Voting precincts

52 voting precincts overlap ZIP 45044. 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:45044")

ZIP 45044 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.