ZIP code 43140: London, OH
ZIP code 43140 is in London (43% of residents), Choctaw Lake (8.5%) and Plumwood (1.1%), in Madison County (98%), Franklin County (1.6%) and Clark County (0.3%), Ohio. 48% of its residents live outside city limits. It is in Ohio's 15th congressional district (100%) and Ohio's 4th congressional district (0.3%). Its state senate districts are State Senate District 3 (100%) and State Senate District 10 (0.3%); its state house districts are State House District 12 (100%) and State House District 74 (0.3%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| London | 43% |
| Choctaw Lake | 8.5% |
| Plumwood | 1.1% |
| Lafayette | 0.9% |
| County | Share of ZIP residents |
|---|---|
| Madison County | 98% |
| Franklin County | 1.6% |
| Clark County | 0.3% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| London city | 43% |
| Union township | 24% |
| Somerford township | 12% |
| Monroe township | 5.9% |
| Fairfield township | 4.4% |
| Deer Creek township | 3.2% |
| Paint township | 2.3% |
| Oak Run township | 1.7% |
| Pleasant township | 1.6% |
| Range township | 0.5% |
| Jefferson township | 0.4% |
| Pleasant township | 0.3% |
| Stokes township | 0.1% |
| Canaan township | <0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Ohio's 15th congressional district (OH-15) | 100% |
| Ohio's 4th congressional district (OH-04) | 0.3% |
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
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (OH-15) | Mike Carey (R) | 202-225-2015 | 100% |
| U.S. Representative (OH-04) | Jim Jordan (R) | 202-225-2676 | 0.3% |
| U.S. Senator | Bernie Moreno (R) | 202-224-2315 | statewide |
| U.S. Senator | Jon Husted (R) | 202-224-3353 | statewide |
| State Senator (State Senate District 3) | Michele Reynolds (R) | 100% | |
| State Senator (State Senate District 10) | Kyle Koehler (R) | 0.3% | |
| State Representative (State House District 12) | Brian Stewart (R) | 100% | |
| State Representative (State House District 74) | Bernie Willis (R) | 0.3% |
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
- London laws: search for the London, Ohio code of ordinances
- Choctaw Lake laws: search for the Choctaw Lake, Ohio code of ordinances
- Plumwood laws: search for the Plumwood, Ohio code of ordinances
- Madison County website: http://www.co.madison.oh.us
- Madison County laws: search for the Madison County, Ohio code of ordinances
- Franklin County website: https://www.franklincountyohio.gov
- Franklin County laws: search for the Franklin County, Ohio code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 3 | 100% |
| State Senate District 10 | 0.3% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 12 | 100% |
| State House District 74 | 0.3% |
Voting precincts
19 voting precincts overlap ZIP 43140. 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:43140")
ZIP 43140 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.