Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/NY/COUNTY/CORTLAND

Cortland County, NY ZIP codes

There are 12 ZIP codes in Cortland County, NY, in 12 towns, from 13040 to 13863. The largest are 13045 (Cortland), 13077 (Homer) and 13803 (Marathon).

The county seat is Cortland.

ZIP codes
12
Towns
12
County seat
Cortland
County FIPS
36023
Population
46,246
Median household income
$70,418
Land area
499 sq mi
Area code
607
Metro area
Cortland

Cortland County ZIP codes by town

Cortland (county seat)
13045

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Cortland County ZIP codes

130401304513056130771308713101131411315813738137841380313863

The ZIP codes of Cortland County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Cortland County in numbers

About 46,246 people live in Cortland County, in 18,999 households, the 52nd most populous of New York's 62 counties. The median household income is $70,418 a year, 18% below the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $162,100 (62% below the New York median), and median gross rent is $984 a month. The median age is 37.0; 29.1% of adults 25 and over hold a bachelor's degree or higher (40.2% across New York); the average commute takes 22 minutes.

Population46,246Cortland46,246
Households18,999Cortland18,999
Median age37.0Cortland37.0New York39.8US 38.9
Median household income$70,418Cortland$70,418New York$85,974US $80,734
Median home value$162,100Cortland$162,100New York$423,800US $332,700
Median gross rent$984Cortland$984New York$1,621US $1,413
Bachelor's degree or higher29.1%Cortland29.1%New York40.2%US 35.7%
Mean commute22.3 minCortland22.3 minNew York32.6 minUS 26.4 min
Population density93 / sq miCortland93 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Cortland County

Largest towns in Cortland County
TownZIP codesPopulation
Cortland 1 17,450
Homer 1 3,114
Cincinnatus 1 2,595
Mc Graw 1 2,358
Truxton 1 1,217
Marathon 1 952
Preble 1 652
Harford 1 382
Willet 1 382
Blodgett Mills 1 212
Little York 1 116

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Cortland County.

Not sure you are in Cortland County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Cortland County, with figures

ZIP codes in Cortland County
ZIP City Type Population Median income Median home
13040 Cincinnatus , NY Standard 2,595 $70,167 $139,200
13045 Cortland , NY Standard 28,361 $69,961 $167,500
13056 East Homer , NY No street area — — —
13077 Homer , NY Standard 6,405 $72,266 $171,200
13087 Little York , NY Standard 116 $97,125 $205,800
13101 Mc Graw , NY Standard 2,358 $63,587 $143,700
13141 Preble , NY Standard 652 $80,208 $175,000
13158 Truxton , NY Standard 1,217 $85,208 $174,000
13738 Blodgett Mills , NY Standard 20 — —
13784 Harford , NY Standard 382 $76,446 —
13803 Marathon , NY Standard 4,273 $63,713 $140,800
13863 Willet , NY Standard 382 $73,333 $111,800

Cite this page

zipcodes.pro. “Cortland County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ny/county/cortland

Underlying data is public domain or openly licensed — sources, vintages and licences.