US Census Data

Montgomery County, Illinois

20 cities & places have their primary county here.

Population
28,078
-2.6%’19–’23
Median household income
$61,863
+17.3%’19–’23
Median home value
$102,200
+21.5%’19–’23

Montgomery County is a county in Illinois with a population of 28,078. 20 cities and places have their primary county here. Its median household income of $61,863 runs below the Illinois figure of $81,702.

From 2019 to 2023, Montgomery County's population declined 2.6% from 28,828 to 28,078, while its median household income rose 17.3% from $52,748 to $61,863.

Households average 2.29 people. The median gross rent is $715.

Demographics

ACS 2019–2023
Population
28,078
Median age
42.6 yrs
Median household income
$61,863
Median home value
$102,200
Median gross rent
$715
Housing units
12,528
Homeownership rate
76.3%
Bachelor's degree or higher
18.2%
Unemployment rate
5.8%

Trends

ACS 5-year · 2019–2023
Population
28,82828,078
Median household income
$52,748$61,863
Median home value
$84,100$102,200
Median gross rent
$644$715
YearPopulationMedian household incomeMedian home valueMedian gross rent
201928,828$52,748$84,100$644
202028,598$54,886$90,300$628
202128,482$59,309$92,300$654
202228,352$61,796$102,000$684
202328,078$61,863$102,200$715

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

CountShare
Under 51,3935.0%
5 to 174,25615.2%
18 to 241,9987.1%
25 to 343,45112.3%
35 to 443,64013.0%
45 to 543,41412.2%
55 to 644,03114.4%
65 to 743,32911.9%
75 and over2,5669.1%

Race & ethnicity

CountShare
White (non-Hispanic)25,83592.0%
Black or African American7562.7%
American Indian & Alaska Native370.1%
Asian1530.5%
Native Hawaiian & Pacific Islander60.0%
Some other race500.2%
Two or more races6442.3%
Hispanic or Latino (any race)5972.1%

Educational attainment (age 25+)

CountShare
No high school diploma2,05310.0%
High school graduate8,41241.2%
Some college or associate's6,24730.6%
Bachelor's degree2,40211.8%
Graduate or professional degree1,3176.4%

Commute to work

Mean travel time to work
24 min

How workers get to work

CountShare
Drove alone9,02180.6%
Carpooled6315.6%
Public transit20.0%
Walked3883.5%
Bicycle480.4%
Worked from home1,0209.1%
Other means860.8%

Travel time

CountShare
Under 15 min4,50244.2%
15 to 29 min2,25822.2%
30 to 44 min1,39113.7%
45 to 59 min7597.5%
60+ min1,26612.4%

Households

Average household size
2.29
Poverty rate
13.8% (3,546 of 25,736)
CountShare
Family households6,75860.0%
Nonfamily households4,50740.0%

Housing

Median year structure built
1963

Occupancy

CountShare
Occupied11,26589.9%
Vacant1,26310.1%

Tenure (of occupied units)

CountShare
Owner-occupied8,59176.3%
Renter-occupied2,67423.7%

Units in structure

CountShare
1-unit, detached10,34882.6%
1-unit, attached1921.5%
2 to 4 units5694.5%
5 to 19 units3282.6%
20 or more units3012.4%
Mobile home & other7906.3%

Geography

County GEOID
17135
State
Illinois
Land area
704 sq mi
Water area
5.97 sq mi
Center point
39.2281, -89.4781

Cities & places

20

Compare with nearby counties

5

Illinois rankings

21

Other counties in Illinois

101