Cortland is a town located in DeKalb County Illinois. Cortland has a 2024 population of 4,518. Cortland is currently growing at a rate of 0.67% annually and its population has increased by 2.75% 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 age in Cortland is 31.4 years: 30.9 years for males, and 33.3 years for females.
According to the most recent ACS, the racial composition of Cortland was:
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,771 | 79.66% |
| Black or African American | 564 | 11.91% |
| Two or more races | 363 | 7.67% |
| Other race | 36 | 0.76% |
| Native American | 0 | 0% |
| Asian | 0 | 0% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
White
Black or African American
Two or more races
Other race
Native American
Asian
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 1,673 | 2.83 | 72.9 | 27.1 |
| Married | 808 | 3.31 | 92.5 | 7.5 |
| Non Family | 592 | 1.48 | 44.9 | 55.1 |
| Male | 170 | 4.56 | 77.6 | 22.4 |
| Female | 103 | 3.94 | 71.8 | 28.2 |
3.22
Average Family Size
2.83
Average Household Size
72.9%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Education Attained | Count | Percentage |
|---|---|---|
| 9th to 12th Grade | 157 | 4.91% |
| Associates Degree | 283 | 8.84% |
| Bachelors Degree | 633 | 19.78% |
| Graduate Degree | 407 | 12.72% |
| High School Graduate | 849 | 26.53% |
| Less Than 9th Grade | 61 | 1.91% |
| Some College | 810 | 25.31% |
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 2,418 | 2,231 | 666 |
| Black | 422 | 402 | 256 |
| Hispanic | 332 | 301 | 107 |
| 2+ Races | 181 | 181 | 59 |
| Other Race | 19 | 8 | 0 |
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%.
All
Male
Female
Name | Average | Male | Female |
|---|---|---|---|
| Bachelors Degree | $55,946 | $55,896 | $56,250 |
| Graduate Degree | $56,620 | $56,991 | $0 |
| High School Graduate | $40,230 | $57,745 | $22,917 |
| Less Than 9th Grade | $53,456 | $0 | $54,044 |
| Overall | $41,636 | $53,689 | $29,987 |
| Some College | $33,048 | $41,471 | $28,894 |
$41,636
Average Earnings
$53,689
Average Male
$29,987
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
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.
rate
Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 3,349 | 208 | 6.21% |
4.42%
Overall Poverty Rate
3.87%
Male Poverty Rate
5.15%
Female Poverty Rate
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 0%. Among those working part-time, it was 12.7%, and for those that did not work, the poverty rate was 9.81%.
rate
Rate | Poverty |
|---|---|
| Some College | 7.96% |
| High School | 4.24% |
| Less Than 9th Grade | 4.13% |
| Bachelors or Greater | 0% |
rate
Rate | Poverty |
|---|---|
| Female Employed | 6.13% |
| Male Employed | 4.48% |
| Male Unemployed | 0% |
| Female Unemployed | 0% |
Households
Families
MarriedFamilies
NonFamilies
Name | Median | Mean |
|---|---|---|
| Families | $106,384 | $115,135 |
| Households | $76,869 | $104,712 |
| Married Families | $108,409 | $-999,999,999 |
| Non Families | $67,649 | $73,207 |
mean
median
Married
Widowed
Divorced
Separated
NeverMarried
43.4%
Overall Marriage Rate
41.3%
Male Marriage Rate
45.9%
Female Marriage Rate
male
female
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.
Married
Widowed
Divorced
Separated
NeverMarried
Second Gulf War
First Gulf War
Vietnam
Korea
World War II
163
Number of Veterans
136
Male Veterans
27
Female Veterans
War | Veterans |
|---|---|
| Second Gulf War | 65 |
| Vietnam | 46 |
| Korea | 23 |
| First Gulf War | 20 |
| World War II | 0 |
count
Age Group | Veterans |
|---|---|
| 65 to 74 | 48 |
| 55 to 64 | 47 |
| 18 to 34 | 45 |
| 75+ | 23 |
| 35 to 54 | 0 |
count
Name | Veterans | % of Total |
|---|---|---|
| White | 163 | 5.51% |
| Hispanic | 18 | 4.07% |
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
16.56%
Veteran Poverty Rate
38.65%
Veteran Disability Rate
LaborForceParticipation
79.2%
Labor Force Participation
75%
Employment Rate
5.3%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
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.
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
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.
Year | Population | Growth | Change |
|---|---|---|---|
| 2029 | 4,669 | 30 | 0.65% |
| 2028 | 4,639 | 30 | 0.65% |
| 2027 | 4,609 | 31 | 0.68% |
| 2026 | 4,578 | 30 | 0.66% |
| 2025 | 4,548 | 30 | 0.66% |
| 2024 | 4,518 | 30 | 0.67% |
| 2023 | 4,488 | 46 | 1.04% |
| 2022 | 4,442 | 30 | 0.68% |
| 2021 | 4,412 | 15 | 0.34% |
| 2020 | 4,397 | -21 | -0.48% |
| 2019 | 4,418 | 36 | 0.82% |
| 2018 | 4,382 | 40 | 0.92% |
| 2017 | 4,342 | 8 | 0.18% |
| 2016 | 4,334 | -3 | -0.07% |
| 2015 | 4,337 | -3 | -0.07% |
| 2014 | 4,340 | 18 | 0.42% |
| 2013 | 4,322 | 2 | 0.05% |
| 2012 | 4,320 | 34 | 0.79% |
| 2011 | 4,286 | -10 | -0.23% |
| 2010 | 4,296 | 0 | 0% |