ZIP code 13421: Oneida, NY
ZIP code 13421 is in Oneida (78% of residents) and Oneida Castle (4.6%), in Madison County (82%) and Oneida County (18%), New York. 17% of its residents live outside city limits. It is in New York's 22nd congressional district (99%) and New York's 21st congressional district (1.3%). Its state senate district is State Senate District 53; its state house district is Assembly District 122.
See it on the mapAll of New York
City and county
| City or town | Share of ZIP residents |
|---|---|
| Oneida | 78% |
| Oneida Castle | 4.6% |
| Durhamville | 0.3% |
| County | Share of ZIP residents |
|---|---|
| Madison County | 82% |
| Oneida County | 18% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Oneida city | 78% |
| Vernon town | 13% |
| Verona town | 5.2% |
| Lincoln town | 2.6% |
| Stockbridge town | 1.0% |
| Smithfield town | 0.6% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| New York's 22nd congressional district (NY-22) | 99% |
| New York's 21st congressional district (NY-21) | 1.3% |
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 (NY-22) | John W. Mannion (D) | 202-225-3701 | 99% |
| U.S. Representative (NY-21) | Elise M. Stefanik (R) | 202-225-4611 | 1.3% |
| U.S. Senator | Charles E. Schumer (D) | 202-224-6542 · contact form | statewide |
| U.S. Senator | Kirsten E. Gillibrand (D) | 202-224-4451 · contact form | statewide |
| State Senator (State Senate District 53) | Joe Griffo (Republican/Conservative) | 315-793-9072 | 100% |
| Assembly Member (Assembly District 122) | Brian Miller (R) | 315-736-3879 | 100% |
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
- Oneida website: http://www.oneidacity.com/
- Oneida laws: search for the Oneida, New York code of ordinances
- Oneida Castle laws: search for the Oneida Castle, New York code of ordinances
- Madison County website: http://www.madisoncounty.ny.gov
- Madison County laws: search for the Madison County, New York code of ordinances
- Oneida County website: https://ocgov.net/
- Oneida County laws: search for the Oneida County, New York code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 53 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 122 | 100% |
Voting precincts
16 voting precincts overlap ZIP 13421. 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:13421")
ZIP 13421 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.