Housing data for Cortland Township, IL

Cortland Township, IL has an estimated 11,312 residents and 4,233 homes (US Census Bureau, 2020–2024 American Community Survey).

It is a township in DeKalb County.

16.1% of households rent.

The median gross rent is $1,444 a month.

Its population grew measurably since 2015–2019 (+0.8%).

Figures last updated on .

Residents
11,312 (±32)
Housing units
4,233 (±211)
Households that rent
16.1%
Median gross rent
$1,444
Residents since 2015–2019
+0.8%

What stands out in Cortland Township

Households that rent: 16.1% (±3.8 points) in Cortland Township, lower than in DeKalb County (38.6%).

Homes in buildings of 5 or more units: 5.9% (±2.9 points) in Cortland Township, lower than in DeKalb County (20.7%).

Median gross rent: $1,444 (±$153) in Cortland Township, higher than in DeKalb County ($1,049).

Median household income: $99,292 (±$10,637) in Cortland Township, higher than in DeKalb County ($70,724).

Housing in Cortland Township at a glance

Cortland Township against DeKalb County, its state and the nation

Estimate (90% margin of error)
Cortland TownshipDeKalb CountyIllinoisUnited States
Residents11,312 (±32)100,703 (exact)12,694,798 (exact)334,922,499
Housing units4,233 (±211)41,678 (±77)5,457,452 (±471)143,775,355
Households that rent16.1% (±3.8 points)38.6% (±1.5 points)32.9% (±0.2 points)34.8%
Median gross rent$1,444 (±$153)$1,049 (±$33)$1,274 (±$5)$1,413
Median household income$99,292 (±$10,637)$70,724 (±$2,546)$83,390 (±$362)$80,734
Median home value$263,500 (±$11,457)$243,600 (±$5,310)$263,300 (±$797)$332,700
Median real estate taxes (a year)$6,953 (±$391)$5,974 (±$128)$5,298 (±$22)$3,119
Built before 198034.8% (±5.7 points)52.7% (±2.8 points)63.4% (±0.2 points)49.7%
Average commute26.3 minutes (±2.3)26.7 minutes (±1.1)27.8 minutes (±0.1)26.4 minutes
Households with broadband95.2% (±2.2 points)92.7% (±1.2 points)90.8% (±0.1 points)91.0%
Median age of residents35.1 years (±2.4)32.7 years (±0.4)39.0 years (±0.1)38.9 years

Cortland Township covers 35.0 square miles of land, about 323 residents per square mile (Census Bureau Gazetteer).

How Cortland Township has changed since 2015–2019

2015–2019 and 2020–2024 American Community Survey 5-year estimates
2015–20192020–2024Amount of changeVerdict
Residents11,225 (±39)11,312 (±32)+0.8%Measurable increase
Housing units4,177 (±193)4,233 (±211)+1.3%Not a measurable change
Median gross rent$1,141 (±$170)$1,444 (±$153)+26.6%No measurable change after inflation
Median home value$173,900 (±$6,395)$263,500 (±$11,457)+51.5%Up after inflation
Median household income$77,736 (±$9,879)$99,292 (±$10,637)+27.7%No measurable change after inflation
Median owner cost with a mortgage$1,737 (±$70)$1,991 (±$105)+14.6%Down after inflation
Median real estate taxes$5,507 (±$275)$6,953 (±$391)+26.3%No measurable change after inflation
Households that rent27.9% (±4.3 points)16.1% (±3.8 points)−11.8 percentage pointsMeasurable decrease
Rental vacancy rate5.3% (±5.7 points)0.0% (±5.5 points)−5.3 percentage pointsNot a measurable change

The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.

Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.

The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.

Crime reported to police in DeKalb County

Cortland Township has no police department of its own in the FBI’s figures, so this is the figure for DeKalb County as a whole.

In 2025, the police departments that report for DeKalb County recorded 164 violent and 1,287 property crimes per 100,000 residents.

A county-wide figure describes the whole county, not this place; crime varies from one community to the next.

ZIP codes in Cortland Township

ZIP Code Tabulation Areas that cover this place (2020–2024 estimates)
ZIP codeShare of the ZIP’s land in this placeResidentsMedian gross rentMedian home valueMedian household income
60112100%4,621$1,552$229,900$72,831
6017823%22,224$1,166$279,500$92,913
6015113%3,888$1,684$347,400$117,450

A ZIP code is a mail route rather than a boundary, so the Census Bureau publishes figures for ZIP Code Tabulation Areas built from census blocks; the share column says how much of each one’s land lies in this place.

Places near Cortland Township

Nearest places with Census figures, by straight-line distance
PlaceDistanceMedian gross rentMedian home valueHouseholds that rent
Cortland1.4 mi$1,552$233,20022.0%
Maple Park3.3 mi$1,728$288,40024.7%
Sycamore4.3 mi$1,140$265,70028.4%
DeKalb4.4 mi$1,029$204,70057.9%
DeKalb Township5.7 mi$1,018$204,10057.8%
Virgil Township5.9 mi$1,509$339,80020.1%
Pierce Township6.0 mi—$377,7004.0%
Sycamore Township6.2 mi$1,183$287,70029.7%

Places in Illinois most like Cortland Township

PlaceMedian gross rentMedian home valueMedian household incomeHouseholds that rent
Cary$1,428$309,800$113,02615.2%
Roscoe Township$1,600$243,600$108,71117.1%
Gages Lake$1,693$310,500$103,31817.0%
Benton Township (Lake County)$1,332$249,800$82,99517.3%
Nunda Township$1,697$321,000$109,57417.7%
Jackson Township (Will County)$1,481$271,500$104,29213.9%

Matched on rent, home value, income, the share who rent, the age of the homes, the share in apartment buildings and the commute, each measured against the spread across Illinois.

HUD Fair Market Rent for Cortland Township, fiscal year 2027

DeKalb County, IL HUD Metro FMR Area, dollars a month
Studio1 bedroom2 bedrooms3 bedrooms4 bedrooms
$1,052$1,155$1,481$2,006$2,301

HUD income limits for Cortland Township, fiscal year 2026

DeKalb County, IL HUD Metro FMR Area, annual household income
Household sizeExtremely low (30%)Very low (50%)Low (80%)
1 person$23,350$38,900$62,300
2 people$26,700$44,450$71,200
3 people$30,050$50,050$80,100
4 people$33,350$55,600$88,950
5 people$38,680$60,050$96,100
6 people$44,360$64,500$103,200
7 people$50,040$68,950$110,300
8 people$55,720$73,400$117,450

These are the limits HUD sets for its housing programs in the DeKalb County, IL HUD Metro FMR Area, where HUD’s median family income for fiscal year 2026 is $112,500.

A program can use its own limits; tax-credit and local programs often do.

Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.

Margins of error are at the 90% confidence level.

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Questions about Cortland Township

What is the average rent in Cortland Township, IL?

The Census Bureau publishes the median rather than the average: the median gross rent in Cortland Township is $1,444 (±$153) a month (2020–2024 American Community Survey), so half of renting households pay less and half pay more.

How much is a one-bedroom apartment in Cortland Township?

The median gross rent for a one-bedroom home in Cortland Township, IL is $917 (±$230) a month (2020–2024 American Community Survey).

Are renters in Cortland Township rent-burdened?

64.6% of renting households in Cortland Township pay 30% or more of their income in gross rent, the share housing researchers usually call rent-burdened (2020–2024 American Community Survey).

How many renters are there in Cortland Township?

Cortland Township has an estimated 663 (±159) renting households, 16.1% of its occupied homes (2020–2024 American Community Survey).

What is the median household income in Cortland Township?

The median household income in Cortland Township is $99,292 (±$10,637) a year (2020–2024 American Community Survey).

What is the average home value in Cortland Township, IL?

The Census Bureau publishes the median: $263,500 (±$11,457) for owner-occupied homes in Cortland Township (2020–2024 American Community Survey).

Is Cortland Township growing?

In Cortland Township, the number of residents went from 11,225 in 2015–2019 to 11,312 in 2020–2024 (+0.8%), a measurable increase.

What ZIP codes are in Cortland Township?

The ZIP codes that cover Cortland Township are 60112, 60178, 60151.

What is the median rent in ZIP code 60112?

The median gross rent in ZIP Code Tabulation Area 60112 is $1,552 (±$364) a month (2020–2024 American Community Survey).

Sources

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Cortland township, DeKalb County, Illinois (county subdivision:16483, in state:17 county:037).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The 2015–2019 figures are B01003_001E, B01003_001M, B25064_001E, B25064_001M from the 2019 release.

The API needs a free key.

Request a Census API key.

DP05_0001E, DP05_0001M, DP04_0001E, DP04_0001M, DP04_0047PE, DP04_0047PM, DP04_0134E, DP04_0134M, DP03_0062E, DP03_0062M, DP04_0089E, DP04_0089M

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.

Figures last updated on .

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