Hamilton, Ohio
Hamilton is a city in Butler County, Ohio, with 63,399 residents in 2020. It is in Ohio's 8th congressional district. Its state senate district is State Senate District 4; its state house district is State House District 47.
County
| County | Share of residents |
|---|---|
| Butler County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Ohio's 8th congressional district (OH-08) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (OH-08) | Warren Davidson (R) | 202-225-6205 | 100% |
| 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 4) | George Lang (R) | 100% | |
| State Representative (State House District 47) | Diane Mullins (R) | 100% |
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
- Hamilton website: https://hamilton-oh.gov
- Hamilton laws: search for the Hamilton, Ohio code of ordinances
- Butler County website: https://bcohio.gov
- Butler County laws: search for the Butler County, Ohio code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 4 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 47 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Hamilton: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Hamilton's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:3933012")
Hamilton here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.