Illinois / Census place 1718823

Decatur

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

Official Census name: Decatur city

At a glance

A city in numbers.

Population
67,884
2025 estimate
Annual change
-0.8%
Population estimate
Density
1,537/sq mi
44.2 sq mi land area
Median age
39.2 years
ACS 5-year estimate

Living here

The everyday equation.

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

Median household income
$51,592
Median home value
$99,600
Median gross rent
$845
Bachelor’s degree or higher
21.6%
Typical commute
17.7 min
Public transit commute
1.4%

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: DECATUR AP (3 mi from place center)
Average high
62.8°F
Average low
43.5°F
Annual rainfall
36.4"
Annual snowfall
0"

Month by month

A year in Decatur.

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.

IN

Gary, IN

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

Population
67,289
Median home
$94,700
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Population, housing, work, and travel data for this Census place.

Population
58,764
Median home
$115,700
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Population, housing, work, and travel data for this Census place.

Population
59,999
Median home
$137,400

Keep exploring

Compare Decatur with Gary