DeKalb Flag

DeKalb

County:
DeKalb County
County Seat:
No
Area (mi²):
17.824
State:
Illinois

DeKalb is a city located in DeKalb County, Illinois. DeKalb has a 2026 population of 40,424. DeKalb is currently declining at a rate of -0.11% annually but its population has increased by 0.45% since the most recent census, which recorded a population of 40,242 in 2020.

The median household income in DeKalb is $46,481 with a poverty rate of 24.87%. The median age in DeKalb is 26.1 years: 25.6 years for males, and 26.4 years for females. For every 100 females there are 96.4 males.

40.4K
Total Population
2,268
Density (mi²)
-43 -0.11%
Growth

DeKalb Population

DeKalb Population

Year ↓
Population
Growth
Annual Change
202640,424-43-0.11%
202540,4673960.99%
202440,071990.25%
202339,972-47-0.12%
202240,019-810-1.98%
202140,8295031.25%
202040,242-2,708-6.31%
201942,9501490.35%
201842,801-70-0.16%
201742,871470.11%
201642,824-166-0.39%
201542,990-266-0.61%
201443,256-9-0.02%
201343,265-249-0.57%
201243,514-206-0.47%
201143,720-387-0.88%
201044,1072450.56%
200039,0184,09311.72%
199034,9251,7685.33%
198033,1572080.63%
197032,94914,46378.24%
196018,4866,77857.89%
195011,7082,56228.01%
19409,1466017.03%
19308,5456748.56%
19207,871-231-2.85%
19108,1022,19837.23%
19005,9043,325128.93%
18902,57900%

Median Age

Overall: 26.1 years
Female: 26.4 years
Male: 25.6 years

DeKalb Adults

There are 32,848 adults, (4,472 of whom are seniors) in DeKalb.

Sex Ratio

Female: 20,588 (50.9%)
Male: 19,855 (49.1%)

Demographics

The racial composition of DeKalb includes 60.55% White, 14.1% Black or African American, 6.06% other race, 4.14% Asian, and smaller percentages for Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White24,48860.55%
Black or African American5,70114.1%
Two or more races5,63613.94%
Other race2,4506.06%
Asian1,6754.14%
Native American4931.22%
Race
Population ↓
Percentage (of total)
Two or more races3,5058.67%
Other race2,3595.83%
White1,6984.2%
Native American3340.83%
Black or African American1140.28%
Asian480.12%
Race
Population ↓
Percentage (of total)
White22,79056.35%
Black or African American5,58713.81%
Two or more races2,1315.27%
Asian1,6274.02%
Native American1590.39%
Other race910.23%

DeKalb Marital Status

Economics and Income Statistics

DeKalb's average per capita income is $40,432. Household income levels show a median of $46,481. The poverty rate stands at 24.87%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$105,167-
Families$68,185$84,068
Households$46,481$64,408
Non Families$32,547$44,531

$40,432

Average Income

$46,481

Median Household Income

24.87%

Poverty Rate

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)