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zipcodes.pro — CITY/IL/CORTLAND

Cortland ZIP code, Illinois

The ZIP code for Cortland, IL is 60112, and its area codes are 815 and 779.

USPS city name
1 ZIP code
Overlapping the city
2 more
Population
4,564
Area codes
815, 779

NANPA lists no telephone rate centre for Cortland itself, so these are the area codes of the nearest one, Dekalb (4.0 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Cortland uses the ZIP code above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Cortland in numbers

About 4,564 people live in Cortland, in 1,558 households. The median household income is $73,971 a year, 11% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $233,200 (11% below the Illinois median), and median gross rent is $1,552 a month. The median age is 31.5; 26.7% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 26 minutes.

Population4,564Cortland4,564
Households1,558Cortland1,558
Median age31.5Cortland31.5Illinois39.0US 38.9
Median household income$73,971Cortland$73,971Illinois$83,390US $80,734
Median home value$233,200Cortland$233,200Illinois$263,300US $332,700
Median gross rent$1,552Cortland$1,552Illinois$1,274US $1,413
Bachelor's degree or higher26.7%Cortland26.7%Illinois37.8%US 35.7%
Mean commute25.5 minCortland25.5 minIllinois27.8 minUS 26.4 min
Population density1,270 / sq miCortland1,270 / sq mi

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

ZIP codes addressed as Cortland

ZIP codes with the USPS city name Cortland
ZIP City Type Population Median income Median home
60112 Cortland , IL Standard 4,621 $72,831 $229,900

Other ZIP codes overlapping Cortland

These ZIP codes cover part of Cortland but are addressed as somewhere else.

ZIP codes overlapping Cortland
ZIP City Type Population Median income Median home
60115 Dekalb , IL Standard 42,536 $47,043 $208,600
60151 Maple Park , IL Standard 3,888 $117,450 $347,400

Map of Cortland ZIP codes

60112

The ZIP codes of Cortland, IL, 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.

Towns near Cortland

The nearest larger towns are DeKalb (40,443 people, 3.1 mi), Sycamore (18,559 people, 4.2 mi) and Genoa (5,492 people, 11 mi).

Towns near Cortland
TownPopulationDistance
DeKalb 40,443 3.1 mi
Sycamore 18,559 4.2 mi
Genoa 5,492 10.6 mi
Elburn 6,354 12.3 mi
Campton Hills 10,877 14.0 mi
Hampshire 8,524 15.5 mi
Pingree Grove 10,914 16.7 mi
Sugar Grove 9,240 17.0 mi
Geneva 21,258 18.9 mi
Rochelle 9,529 19.3 mi
Plano 12,203 19.4 mi
St. Charles 32,854 19.5 mi
South Elgin 24,217 19.6 mi
North Aurora 18,696 20.0 mi

More nearby: every ZIP code in DeKalb County · Illinois ZIP codes

Cite this page

zipcodes.pro. “Cortland, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/cortland

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