Illinois / Census place 1719161

DeKalb

A Census profile of the people, homes, and daily patterns that shape this place.

Official Census name: DeKalb city

At a glance

A city in numbers.

Population
40,467
2025 estimate
Annual change
+1%
Population estimate
Density
2,275/sq mi
17.8 sq mi land area
Median age
26.1 years
ACS 5-year estimate

Living here

The everyday equation.

Households, homes, education, and the time it takes to get around.

Median household income
$46,481
Median home value
$204,700
Median gross rent
$1,029
Bachelor’s degree or higher
33.7%
Typical commute
23.8 min
Public transit commute
1.1%

Climate normals

The long view of weather.

Thirty-year averages, not a forecast. Temperature and precipitation describe the typical conditions recorded from 1991 through 2020.

Representative station: SHABBONA 5 NNE (8 mi from place center)
Average high
57.7°F
Average low
37.9°F
Annual rainfall
37.4"
Annual snowfall
0"

Month by month

A year in DeKalb.

Typical high and low °F
JFMAMJJASOND
Typical precipitation inches
J
F
M
A
M
J
J
A
S
O
N
D

Data vintage

Population is from the 2025 Population Estimates Program. Household, housing, education, and commute data are from the 2020-2024 American Community Survey 5-year release.

Similar places

More places to consider.

Selected by the closest mix of population, density, median home value, and average annual high.

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Population, housing, work, and travel data for this Census place.

Population
42,732
Median home
$241,700
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Population, housing, work, and travel data for this Census place.

Population
50,784
Median home
$210,100
WI

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Population, housing, work, and travel data for this Census place.

Population
44,541
Median home
$173,700

Keep exploring

Compare DeKalb with Marion