ZIP code · Oneida · New York · United States

ZIP code 13421 — Oneida

ZIP code 13421 serves Oneida, New York.

Postal code
13421
Single source Value from one source, not cross-checked.
City
Oneida
County
Madison FIPS 36053
State
New York
Country
United States
Coordinates
43.0862, -75.6508 — precision precise (locality)
View on OpenStreetMap
Population
12,742 (ZCTA, ACS 5-year)
Population density
318 / sq mi
Land area
40.1 sq mi (103.9 km²) (ZCTA, ACS 5-year)
Median household income
$63,732
Per-capita income
$40,291
Median age
45.9
Households
5,573
Housing units
5,953
Median home value
$147,800
Median gross rent
$846 / month
Congressional districts
NY-22 (also NY-21) (119th Congress)
USDA hardiness zone
5b (-15 to -10 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/New_York (UTC−5 / UTC−4 DST)
Area codes
315, 680
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 81°F), coldest Jan (avg low 14°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F303241556876817972594635
Avg low °F141523354655605851413121
Precip in2.62.33.03.93.94.54.24.73.54.33.63.6

NOAA 1991–2020 climate normals from the nearest station: UTICA ONEIDA CO AP (14.0 mi) · NOAA NCEI

Places in ZIP 13421

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page