ZIP Codes of Oswego County, NY

Population & People
Population & People
Total Population
120,179
Household Income
Household Income
Median Income
$71,488
Housing
Housing
Total Housing Units
55,730
Business & Economy
Business & Economy
Total Businesses
2,113
Employment
Employment
Employment Rate
55.48%
Education
Education
Bachelor's Degree+
22.08%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 26 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:26 ZIP Codes (21 Standard, 5 PO Box, 0 Unique) [See All]
Area Codes:315 / 680
Timezone:Eastern (GMT -05:00)
Local Time:2:13:16 PM
Population:120,179 [See All]
FIPS:36075
CBSA:Syracuse, NY
Land Area:1,058 sq mi
Water Area:28 sq mi
Coordinates:43.4213, -76.1452
Quick Link:
https://www.zip-codes.com/county/ny-oswego.asp
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Extreme geographic sprawl
The largest ZIP spans 750× the smallest by area — 112.6 sq mi down to 0.15.

Standout ZIPs in this County


Most Populous
Oswego · 36,495 people
30.4% of county total
Highest Income
Hastings · $95,889 median
1.3× county average
Largest Land Area
Fulton · 112.6 sq mi
Spans the most ground
Fastest Growth
Williamstown · 19.4% (10-yr)
2,034 → 2,428 residents
Most Educated
Phoenix · 32.3% bachelor's+
1,472 of 4,560 adults 25+

Things worth knowing about Oswego County


120,179 residents live across 26 ZIPs covering 1,058 sq mi, served by 26 distinct USPS-recognized cities.

Population moved from 124,742 to 120,179 from 2014 to 2024 — a -3.7% change. 11 ZIPs gained residents, 11 lost.

The county's wealthiest ZIP 13076 (Hastings, $95,889 median) and poorest ZIP 13302 (Altmar, $55,341) are 13.4 miles apart — a 1.7× income gap across local geography.

Median home values vary 1.9× across this county — from $106,700 in 13144 (Richland) to $201,500 in 13036 (Central Square).

Density varies 15× across the county — from 23 people/sq mi in 13302 (Altmar) to 359 in 13126 (Oswego).

Educational attainment ranges from 9.1% bachelor's+ in 13144 (Richland) to 32.3% in 13135 (Phoenix) — the breadth of educational profiles across the area.

Within New York, this is the #24 most populous of 62 counties and ranks #45 for median household income .

Weighted by population, the typical household earns about $70,193 across the county — reflecting what a typical resident sees, not a simple ZIP average.

22.1% of adults age 25+ hold a bachelor's degree or higher (18,151 of 82,219 reporting).

21 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.

All ZIP Codes in Oswego County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
13126OswegoStandard36,495$65,346101.6-1.9%
13069FultonStandard22,810$63,113112.6-9.8%
13036Central SquareStandard8,616$83,64848.11.8%
13114MexicoStandard7,214$65,56163.66.7%
13135PhoenixStandard6,515$87,04133.2-6.8%
13142PulaskiStandard6,365$73,85476.83.6%
13074HannibalStandard4,496$81,56343.00.6%
13132PennellvilleStandard3,626$72,47323.56.0%
13167West MonroeStandard3,215$85,29441.85.2%
13131ParishStandard2,880$70,28652.1-21.8%
13076HastingsStandard2,778$95,88914.913.3%
13044ConstantiaStandard2,643$64,31327.912.4%
13493WilliamstownStandard2,428$63,12564.419.4%
13145Sandy CreekStandard2,028$60,62515.76.2%
13042ClevelandStandard1,960$86,58767.3-30.0%
13083LaconaStandard1,835$71,66756.07.7%
13302AltmarStandard1,289$55,34155.1-16.9%
13144RichlandStandard1,219$64,07336.7-33.7%
13028Bernhards BayStandard1,162$61,64517.4-20.0%
13437RedfieldStandard254$48,438105.7-41.6%
13103MalloryStandard224$80,0000.2-61.0%
13115MinettoPO Box127$72,8570.3-26.2%
13121New HavenPO Box00.0
13107Maple ViewPO Box0.0
13426OrwellPO Box0.0
13093LycomingPO Box0.0

Adjacent & Nearby Counties