Boundary Atlas

ZIP code 45409: Dayton, OH

ZIP code 45409 is in Dayton (53% of residents), Kettering (36%) and Oakwood (11%), in Montgomery County, Ohio. It is in Ohio's 10th congressional district. Its state senate district is State Senate District 6; its state house districts are State House District 38 (53%), State House District 36 (47%) and State House District 37 (0.2%).

12,392residents (2020 Census)
3.7 sq miland area
4cities and towns
1congressional district
10voting precincts

See it on the mapAll of Ohio

City and county

City or townShare of ZIP residents
Dayton53%
Kettering36%
Oakwood11%
Moraine0.2%

CountyShare of ZIP residents
Montgomery County100%

Town or county subdivisionShare of ZIP residents
Dayton city53%
Kettering city36%
Oakwood city11%
Moraine city0.2%

Congressional district

Congressional districtShare of ZIP residents
Ohio's 10th congressional district (OH-10)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 6100%

State house districtShare of ZIP residents
State House District 3853%
State House District 3647%
State House District 370.2%

Voting precincts

10 voting precincts overlap ZIP 45409. 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:45409")

ZIP 45409 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.