60112 ZIP Code — Cortland, IL
Dekalb County, Illinois
ZIP code 60112 is located in Cortland, Illinois, within Dekalb County. It covers approximately 3.66 square miles and serves a population of 4,783 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 815/779.
About ZIP code 60112
The housing stock consists of a mix of housing types. Most homes were built in the 2000s, giving the area an established character. Median home value is $195,500. Owner-occupancy sits near the national average at 73%.
The gap between median ($76,528) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 4% is below the national average.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 29 minutes is near the national average.
Educational attainment is near the national average, with 32% of residents holding a bachelor's degree or higher.
4,783
population
3.66
sq mi land
Standard
ZIP type
Central (CT)
timezone
60112 ZIP code map
Cities in ZIP code 60112
Below are the cities the US Postal Service accepts for ZIP code 60112. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Cortland | Preferred |
Nearby ZIP codes
60115 Dekalb (2.7 mi)
60178 Sycamore (5.6 mi)
60151 Maple Park (6.2 mi)
60111 Clare (9.8 mi)
60150 Malta (10 mi)
60520 Hinckley (10.4 mi)
60119 Elburn (11 mi)
60556 Waterman (12.4 mi)
60145 Kingston (13.1 mi)
60135 Genoa (13.1 mi)
60511 Big Rock (13.3 mi)
60140 Hampshire (13.9 mi)
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 4,783 |
| Population density | 1,307 / sq mi |
| State FIPS | 17 |
| County FIPS | 037 |
| Geography | |
|---|---|
| Land area | 3.66 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 41.9258 |
| Longitude | -88.6908 |
| Timezone | Central (CT) |
| Area code | 815/779 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 24.6% | 40.0% | 37.2% |
| $50k – $100k | 40.5% | 31.3% | 29.6% |
| $100k – $200k | 29.6% | 24.0% | 24.4% |
| Over $200k | 5.4% | 4.8% | 8.8% |
Demographics & statistics
4,783
Population
1,307
People per sq mi
31.6
Median age
$76,528
Median household income
$37,091
Per capita income
$195,500
Median home value
$1,423
Median monthly rent
73.4%
Home ownership
4.4%
Poverty rate
5.3%
Unemployment
1,332
Housing units
32.2%
Bachelor's or higher
Age distribution
Male
Female
168
Under 5
129
164
5–9
126
233
10–14
179
78
15–19
60
224
20–24
173
629
25–34
486
430
35–44
332
195
45–54
151
174
55–59
135
143
60–64
111
130
65–74
100
114
75–84
88
17
85+
14
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 1,098 | 23.0% |
| 18 and over | 3,685 | 77.0% |
| 65 and over | 463 | 9.7% |
| Median age | 31.6 years | |
Race & ethnicity
White
75.2%
Black or African American
11.1%
Two or more races
7.1%
Hispanic or Latino
5.8%
Other race
0.7%
| Group | Count | % |
|---|---|---|
| White | 3,820 | 75.2% |
| Black or African American | 564 | 11.1% |
| Two or more races | 363 | 7.1% |
| Hispanic or Latino | 297 | 5.8% |
| Other race | 36 | 0.7% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 24.6% | 40.0% | 37.2% |
| $50k – $100k | 40.5% | 31.3% | 29.6% |
| $100k – $200k | 29.6% | 24.0% | 24.4% |
| Over $200k | 5.4% | 4.8% | 8.8% |
Under $10k
2.2%
$10k–$15k
1.6%
$15k–$25k
2.4%
$25k–$35k
3.5%
$35k–$50k
8.0%
$50k–$75k
28.1%
$75k–$100k
12.5%
$100k–$150k
17.0%
$150k–$200k
19.5%
$200k+
5.1%
| Range | % of households |
|---|---|
| Under $10k | 2.2% |
| $10k–$15k | 1.6% |
| $15k–$25k | 2.4% |
| $25k–$35k | 3.5% |
| $35k–$50k | 8.0% |
| $50k–$75k | 28.1% |
| $75k–$100k | 12.5% |
| $100k–$150k | 17.0% |
| $150k–$200k | 19.5% |
| $200k+ | 5.1% |
| Median income | $76,528 |
Housing
Home values
Under $50k
2.9%
$50k–$100k
1.8%
$100k–$150k
6.8%
$150k–$200k
42.2%
$200k–$300k
42.1%
$300k–$500k
2.5%
$500k–$1M
1.8%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $195,500 |
| Median rent / month | $1,423 |
| Owner occupied | 73.4% |
| Renter occupied | 26.6% |
| Vacant | 4.3% |
| Single-family detached | 61.9% |
| Large apartment buildings | 0.0% |
| Mobile homes | 2.4% |
| Median rooms | 5.7 |
| Avg household size (owned) | 2.91 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 2.2% |
| 2000–2009 | 35.3% |
| 1990–1999 | 24.0% |
| 1980–1989 | 3.8% |
| 1970–1979 | 11.1% |
| 1960–1969 | 6.6% |
| 1950–1959 | 11.0% |
| 1940–1949 | 4.0% |
| 1939 or earlier | 1.9% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 0.4% |
| 2 bedrooms | 19.7% |
| 3 bedrooms | 61.1% |
| 4 bedrooms | 16.5% |
| 5+ bedrooms | 2.2% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 1.6% |
| 1 vehicle | 29.7% |
| 2 vehicles | 42.4% |
| 3 or more | 26.4% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 89.5% |
| Electricity | 8.5% |
| Propane / LP gas | 0.2% |
| Fuel oil | 1.8% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 808 | 47.3% |
| Cohabiting couple | 409 | 23.9% |
| Male householder, no spouse | 307 | 18.0% |
| Female householder, no spouse | 185 | 10.8% |
| Households with children under 18 | 595 | 34.8% |
| Households with seniors (65+) | 335 | 19.6% |
| Average household size | 2.80 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 46.9% | 39.0% |
| Married | 40.5% | 45.6% |
| Separated | 0.0% | 0.0% |
| Widowed | 2.5% | 3.3% |
| Divorced | 10.0% | 12.2% |
Education
Less than 9th grade
1.9%
Some HS, no diploma
4.8%
HS graduate
26.8%
Some college, no degree
25.5%
Associate's degree
8.7%
Bachelor's degree
19.7%
Graduate / professional
12.5%
| Metric | % |
|---|---|
| HS diploma or higher | 93.3% |
| Bachelor's or higher | 32.2% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 79 | 6.3% |
| Kindergarten | 70 | 5.6% |
| Elementary school | 518 | 41.4% |
| High school | 197 | 15.7% |
| College / grad school | 388 | 31.0% |
Employment
Industry of employment
Education & healthcare
28.4%
Retail trade
16.3%
Professional & management
12.4%
Construction
8.3%
Manufacturing
7.3%
Transportation & utilities
6.7%
Finance & real estate
5.7%
Wholesale trade
3.9%
Arts, food & hospitality
3.9%
Public administration
3.4%
Other services
1.9%
Information
1.5%
Agriculture & mining
0.3%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 33.5% |
| Service | 18.7% |
| Sales & office | 29.2% |
| Natural resources & construction | 9.1% |
| Production & transportation | 9.5% |
Employment type
| Type | % |
|---|---|
| Private sector | 80.1% |
| Government | 16.4% |
| Self-employed | 3.5% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 85.3% |
| Carpool | 8.8% |
| Public transit | 0.5% |
| Walk | 0.3% |
| Work from home | 4.3% |
| Other means | 0.8% |
| Avg commute (minutes) | 29.3 |
Poverty
All people
4.4%
Under 18 years
0.0%
18 and over
5.6%
Married-couple families
0.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 18.8% |
| Retirement income | 13.8% |
| Supplemental Security | 3.6% |
| Cash public assistance | 1.3% |
| Food stamps / SNAP | 15.3% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 34.4% |
| High blood pressure | 23.4% |
| High cholesterol | 24.9% |
| Diabetes | 6.5% |
| Heart disease | 3.6% |
| Stroke | 1.8% |
| Asthma | 9.8% |
| Arthritis | 17.6% |
| Kidney disease | 1.8% |
| Pulmonary disease | 4.5% |
| Cancer | 4.1% |
| Behavior / access | % |
|---|---|
| Smoking | 17.9% |
| Binge drinking | 18.2% |
| No physical activity | 20.7% |
| Less than 7 hrs sleep | 31.9% |
| Depression | 18.1% |
| Fair or poor health | 10.9% |
| Poor mental health | 14.1% |
| Poor physical health | 7.7% |
| No health insurance | 12.1% |
| Visited doctor (checkup) | 72.5% |
| Visited dentist | 62.6% |
| Cholesterol screening | 86.3% |
| Teeth loss | 12.0% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 169 | 4.6% |
| Disability | % |
|---|---|
| Any disability | 11.7% |
| Under 18 | 8.7% |
| 18–64 years | 10.1% |
| 65 and over | 30.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 78.4% |
| Public insurance | 27.7% |
| No insurance | 3.4% |
| Uninsured under 19 | 2.1% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 4,486 | 93.8% |
| Spanish | 136 | 3.0% |
| Other Indo-European | 112 | 2.5% |
| Asian & Pacific Islander | 24 | 0.5% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 4,552 | 95.2% |
| Born in same state | 4,530 | 94.7% |
| Born in different state | 3,859 | 80.7% |
| Foreign born | 22 | 0.5% |
| Naturalized citizen | 231 | 4.8% |
| Not a US citizen | 71 | 30.7% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 734 | 15.3% |
| French | 277 | 5.8% |
| English | 184 | 3.8% |
| Arab | 131 | 2.7% |
| Ancestry | Count | % |
|---|---|---|
| Polish | 95 | 2% |
| Dutch | 32 | 0.7% |
| Irish | 11 | 0.2% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 35.7% |
| Internet access | 99.5% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 60112
What city is ZIP code 60112 in?
ZIP code 60112 is primarily assigned to Cortland, Illinois.
What county is ZIP code 60112 in?
ZIP code 60112 falls within Dekalb County, Illinois.
What is the population of ZIP code 60112?
ZIP code 60112 has an estimated population of 4,783 residents, with a density of 1,309 people per square mile.
What is the typical home value in ZIP code 60112?
The median home value in ZIP code 60112 is $195,500.
What is the median household income in ZIP code 60112?
The median household income in ZIP code 60112 is $76,528, above the national median of ~$75,000.
What timezone is ZIP code 60112 in?
ZIP code 60112 observes the CST timezone.