ZIP code 45227: Cincinnati, OH
ZIP code 45227 is in Cincinnati (54% of residents), Mariemont (19%), Fairfax (9.6%), Madison Place (3.1%) and Madeira (2.2%), in Hamilton County, Ohio. 12% of its residents live outside city limits. It is in Ohio's 1st congressional district (53%) and Ohio's 8th congressional district (47%). Its state senate districts are State Senate District 9 (95%) and State Senate District 8 (5.1%); its state house districts are State House District 26 (95%) and State House District 27 (5.1%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Cincinnati | 54% |
| Mariemont | 19% |
| Fairfax | 9.6% |
| Madison Place | 3.1% |
| Madeira | 2.2% |
| Plainville | 0.4% |
| Silverton | 0.1% |
| County | Share of ZIP residents |
|---|---|
| Hamilton County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Cincinnati city | 54% |
| Mariemont village | 19% |
| Columbia township | 15% |
| Fairfax village | 9.6% |
| Madeira city | 2.2% |
| Silverton village | 0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Ohio's 1st congressional district (OH-01) | 53% |
| Ohio's 8th congressional district (OH-08) | 47% |
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 |
|---|---|---|---|
| Mayor | Aftab Pureval | 513-352-3250 | 54% |
| U.S. Representative (OH-01) | Greg Landsman (D) | 202-225-2216 | 53% |
| U.S. Representative (OH-08) | Warren Davidson (R) | 202-225-6205 | 47% |
| 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 9) | Catherine Ingram (Democratic) | 95% | |
| State Senator (State Senate District 8) | Bill Blessing (R) | 5.1% | |
| State Representative (State House District 26) | Ashley Bryant Bailey (Democratic) | 95% | |
| State Representative (State House District 27) | Rachel Baker (Democratic) | 5.1% |
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: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Cincinnati website: https://www.visitcincy.com/
- Cincinnati laws: search for the Cincinnati, Ohio code of ordinances
- Mariemont laws: search for the Mariemont, Ohio code of ordinances
- Fairfax website: https://fairfaxoh.com/
- Fairfax laws: search for the Fairfax, Ohio code of ordinances
- Hamilton County laws: search for the Hamilton County, Ohio code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 9 | 95% |
| State Senate District 8 | 5.1% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 26 | 95% |
| State House District 27 | 5.1% |
Voting precincts
18 voting precincts overlap ZIP 45227. 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:45227")
ZIP 45227 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.