Oneida County, New York

County seat: Utica · Population 226,392 (2025) · 1,212 sq mi

Oneida County is the 17th most populous of New York's 62 counties, with 226,392 people (2025 estimate). Its county seat is Utica. The map shows its 19 cities and towns and the 5 neighboring counties.

Map of Oneida County, New York with cities, towns and the county boundary
Oneida County, New York with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
Download PDF (Letter) 154 KBPNG image 124 KBNew York county map

Oneida County facts

County seat
Utica
Population (2025 estimate)
226,392 −2.5% since 2020
Land area
1,212 sq mi 11th largest of 62
Water area
45 sq mi
Population density
187 per sq mi
Established
1798
Same name
One of 3 Oneida Counties in the US
Named after
Oneida ethnic group in North America
Largest city
Utica 62,978
Median household income
$70,154
Cities and towns
19 plus 17 CDPs
ZIP codes
55
Time zone
Eastern
FIPS code
36065

Cities and towns in Oneida County

Oneida County has 19 incorporated cities, towns and villages. Populations count the people living inside Oneida County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Utica (county seat)City62,978
RomeCity31,682
WhitesboroVillage3,559
New York MillsVillage3,162
SherrillCity2,973
YorkvilleVillage2,572
CamdenVillage2,124
BoonvilleVillage1,986
New HartfordVillage1,842
ClintonVillage1,599
WatervilleVillage1,491
OriskanyVillage1,329
VernonVillage1,151
Sylvan BeachVillage890
Oriskany FallsVillage633
Oneida CastleVillage579
RemsenVillage407
Holland PatentVillage390
ClayvilleVillage332

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Lake Delta3,202
Washington Mills2,112
Hamilton College2,058
Clark Mills1,591
Verona1,389
Chadwicks791
Durhamville749
Marcy697
Bridgewater543Madison County
North Bay257
Barneveld240
Prospect218
Westernville195
Stittville155
Otter Lake77
Westmoreland61
White Lake55

ZIP codes in Oneida County

55 ZIP codes reach into Oneida County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Oneida County, 2020–2025

Oneida County shrank by 5,731 people (−2.5%) between April 2020 and July 2025: 2,549 more deaths than births and a net loss of 2,952 people from migration.

Year (July 1)Population
2020231,265
2021229,229
2022228,351
2023227,555
2024227,292
2025226,392

Neighboring counties

Printable Oneida County map

The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.

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Sources

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