Cortland, Illinois Population 2024

4,503

Cortland is a city located in DeKalb County Illinois. Cortland has a 2024 population of 4,503. Cortland is currently growing at a rate of 0.67% annually and its population has increased by 2.41% since the most recent census, which recorded a population of 4,397 in 2020.

The average household income in Cortland is $104,712 with a poverty rate of 4.42%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Cortland is 31.4 years, 30.9 years for males, and 33.3 years for females.

Cortland Demographics

According to the most recent ACS, the racial composition of Cortland was:

  • White: 79.66%
  • Black or African American: 11.91%
  • Two or more races: 7.67%
  • Other race: 0.76%
  • Native American:
  • Asian:
  • Native Hawaiian or Pacific Islander:
Land Area (mi²)
3.6 sq mi
Density (mi²)
1,234.10/sq mi
Growth Since 2020
2.41% (106)
The current population of Cortland, Illinois is 4,503 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 4,397.

Cortland, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White3,77179.66%
Black or African American56411.91%
Two or more races3637.67%
Other race360.76%
Native American
Asian
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Black or African American

Two or more races

Other race

Native American

Asian

Native Hawaiian or Pacific Islander

Cortland Population by Race

Cortland Population Pyramid 2024

Cortland Median Age

31.4

Total

30.9

Male

33.3

Female

Cortland Adults

There are 3,636 adults, (432 of whom are seniors) in Cortland.

Cortland Age Dependency

47.8

Age Dependency Ratio

13.5

Old Age Dependency Ratio

34.3

Child Dependency Ratio

Cortland Sex Ratio

Female2,07143.75%
Male2,66356.25%

Cortland Population by Age

Cortland Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All1,6732.8372.927.1
Married8083.3192.57.5
Non Family5921.4844.955.1
Male1704.5677.622.4
Female1033.9471.828.2
showing: 5 rows

3.22

Average Family Size

2.83

Average Household Size

72.9%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Cortland Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Cortland Educational Attainment by Sex (over 25)

Cortland Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among 2+ races people with a rate of 100%.

The highest rate of bachelors degrees is among black people with a rate of 60.66%.

Cortland Educational Attainment by Race

All

Male

Female

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$41,636

Average Earnings

$53,689

Average Male

$29,987

Average Female

Cortland Earnings by Educational Attainment

Cortland Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Cortland Language

89.27% of Cortland residents speak only English, while 10.73% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 9.71% of the population.

Cortland Language

Cortland Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White3,3492086.21%
showing: 1 rows

4.42%

Overall Poverty Rate

3.87%

Male Poverty Rate

5.15%

Female Poverty Rate

Poverty in Cortland

The race most likely to be in poverty in Cortland is White, with 6.21% below the poverty level.

The race least likely to be in poverty in Cortland is White, with 6.21% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was . Among those working part-time, it was 12.7%, and for those that did not work, the poverty rate was 9.81%.

Cortland Poverty

rate

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Rate
Poverty
Some College7.96%
High School4.24%
Less Than 9th Grade4.13%
Bachelors or Greater
showing: 4 rows

Cortland Poverty Rate by Education

rate

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Rate
Poverty
Female Employed6.13%
Male Employed4.48%
Male Unemployed
Female Unemployed
showing: 4 rows

Cortland Poverty Rate by Employment Status and Sex

Cortland Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Cortland Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

43.4%

Overall Marriage Rate

41.3%

Male Marriage Rate

45.9%

Female Marriage Rate

Cortland Married by Age and Sex

male

female

Cortland Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Cortland Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Cortland Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

163

Number of Veterans

136

Male Veterans

27

Female Veterans

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Cortland Veterans by War

count

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Cortland Veterans by Age

count

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Cortland Veterans by Race

Cortland Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

16.56%

Veteran Poverty Rate

38.65%

Veteran Disability Rate

Cortland Veterans by Education

LaborForceParticipation

79.2%

Labor Force Participation

75%

Employment Rate

5.3%

Unemployment Rate

Cortland Employment by Age

LaborForceParticipation

Cortland Employment by Race

LaborForceParticipation

Cortland Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

80.76%

Born in Cortland

95.12%

Native Born

4.88%

Foreign Born

3.38%

Non Citizen

1.5%

Naturalized

Place of Birth

95.12% of Cortland residents were born in the United States, with 80.76% having been born in Illinois. 3.38% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Cortland Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20294,653300.65%
20284,623300.65%
20274,593300.66%
20264,563300.66%
20254,533300.67%
20244,503300.67%
20234,473300.68%
20224,443300.68%
20214,413160.36%
20204,397-21-0.48%
20194,418360.82%
20184,382400.92%
20174,34280.18%
20164,334-3-0.07%
20154,337-3-0.07%
20144,340180.42%
20134,32220.05%
20124,320340.79%
20114,286-10-0.23%
20104,296
showing: 20 rows

Cortland Population by Year