Cortland, Illinois Population 2021

11,642
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Cortland is a city located in Illinois. Cortland has a 2020 population of 11,642. Cortland is currently growing at a rate of 1.04% annually and its population has increased by 5.82% since the most recent census, which recorded a population of 11,002 in 2010. Cortland reached it's highest population of 11,642 in 2021.

The average household income in Cortland is $88,822 with a poverty rate of 8.42%. The median rental costs in recent years comes to $1,141 per month, and the median house value is $173,900. The median age in Cortland is 34.8 years, 34.1 years for males, and 35 years for females.

Cortland Demographics

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

  • White: 89.86%
  • Black or African American: 6.54%
  • Two or more races: 1.60%
  • Asian: 1.11%
  • Other race: 0.83%
  • Native American: 0.05%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Cortland, Illinois is 11,642 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 11,282.The last official US Census in 2010 recorded the population at 11,002.

Cortland, Illinois Population 2021

Population by Race

Race Population Percentage
White10,08789.86%
Black or African American7346.54%
Two or More Races1801.60%
Asian1251.11%
Some Other Race930.83%
American Indian and Alaska Native60.05%
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Cortland Population by Race

Cortland Population Pyramid $2021

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Cortland Median Age

34.8


Total

34.1


Male

35


Female

Cortland Adults

There are 8,280 adults, (1,430 of whom are seniors) in Cortland.

Cortland Age Dependency

63.9

Age Dependency Ratio

20.9

Old Age Dependency Ratio

43

Child Dependency Ratio

Cortland Sex Ratio

Female

5,707

50.84%

Male

5,518

49.16%

Cortland Population by Age

Cortland Renter vs Owner Occupied by Household Type

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Cortland Household Types

Type Owner Renter
Married84.7%15.3%
All72.1%27.9%
Female64.2%35.8%
Male59.3%40.7%
Non Family53.6%46.4%

72.1%

Rate of Home Ownership

Cortland Households and Families

Type Count Average Size Owned
All3,9362.8572.1
Married2,1523.4484.7
Non Family1,0991.3953.6
Female4442.9764.2
Male2414.0959.3

3.35

Average Family Size

2.85

Average Household Size

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Cortland Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1061.49%
9th to 12th Grade2763.87%
High School Graduate1,89626.62%
Some College1,50021.06%
Associates Degree6969.77%
Bachelors Degree1,75024.57%
Graduate Degree89912.62%
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Cortland Educational Attainment by Sex (over 25)

Cortland Educational Attainment by Race

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Race Total High School Bachelors
White6,0725,8232,185
Black505498231
Hispanic421295109
Asian110110110
Other Race93
2+ Races373728
Native American11

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 100.00%.

Cortland Educational Attainment by Race

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Name Average Male Female
Overall$44,931$53,490$33,378
Less Than 9th Grade$16,033$17,283$6,915
High School Graduate$31,335$51,016$21,123
Some College$40,239$51,359$29,375
Bachelors Degree$52,552$72,200$48,051
Graduate Degree$62,692$58,906$64,038

$44,931

Average Earnings

$53,490

Average Male

$33,378

Average Female

Cortland Earnings by Educational Attainment

Cortland Language by Age

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Cortland Language

90.12% of Cortland residents speak only English, while 9.88% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 6.46% of the population.

Cortland Language

Cortland Poverty by Race

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Name Total In Poverty Poverty Rate
White9,3165736.15%
Hispanic90325328.02%
Black7299813.44%
Other9393100.00%
Asian1252116.80%

8.42%

Overall Poverty Rate

8.48%

Male Poverty Rate

8.37%

Female Poverty Rate

Poverty in Cortland

The race most likely to be in poverty in Cortland is Other, with 100.00% below the poverty level.

The race least likely to be in poverty in Cortland is White, with 6.15% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.13%. Among those working part-time, it was 16.17%, and for those that did not work, the poverty rate was 11.49%.

Cortland Poverty

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Name Poverty
Less Than 9th Grade28.01%
High School6.65%
Bachelors or Greater5.70%
Some College2.50%

Cortland Poverty Rate by Education

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Rate Poverty
Female Unemployed15.00%
Male Unemployed10.78%
Male Employed6.45%
Female Employed5.19%

Cortland Poverty Rate by Employment Status and Sex

Cortland Income by Household Type

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Name Median Mean
Households$77,736$88,822
Families$94,556$102,157
Married Families$99,635-
Non Families$48,860$51,383
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Income by Household Type

Cortland Marital Status

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Marriage Rates

51.7%

Overall Marriage Rate

52.5%

Male Marriage Rate

51.0%

Female Marriage Rate

Cortland Married by Age and Sex

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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 45-54.

Cortland Marital Status by Race

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Cortland Marital Status

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613

Number of Veterans

525

Male Veterans

88

Female Veterans

War Veterans
Vietnam242
First Gulf War88
Korea68
Second Gulf War50
World War II27

Cortland Veterans by War

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Age Group Veterans
65 to 74178
75+157
35 to 54134
55 to 6494
18 to 3450

Cortland Veterans by Age

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Name Veterans % of Total
White5617.47%
Black529.98%
Hispanic81.37%

Cortland Veterans by Race

Cortland Veterans by Education

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7.50%

Veteran Poverty Rate

36.05%

Veteran Disability Rate

Cortland Veterans by Education

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72.4%

Labor Force Participation

70.2%

Employment Rate

2.9%

Unemployment Rate

Cortland Employment by Age

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Cortland Employment by Race

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Cortland Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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74.11%

Born in Cortland

94.57%

Native Born

5.43%

Foreign Born

3.23%

Non Citizen

2.20%

Naturalized

Place of Birth

94.57% of Cortland residents were born in the United States, with 74.11% having been born in Illinois. 3.23% 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

Year Population Growth Annual Growth Rate
202111,6421201.04%
202011,5221201.05%
201911,4021201.06%
201811,282780.70%
201711,204560.50%
201611,148290.26%
201511,119-1-0.01%
201411,120820.74%
201311,038240.22%
201211,014520.47%
201110,962-40-0.36%
201011,0020.00%

Cortland Population by Year