Belleville vs O'Fallon

A side-by-side comparison of Belleville and O'Fallon: population, income, housing, and more.

Belleville and O'Fallon are places in Illinois. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Belleville has the higher population (41,722 vs 32,139 in O'Fallon). O'Fallon has the higher median household income ($102,793 vs $60,529 in Belleville). O'Fallon has the higher median home value ($274,100 vs $131,000 in Belleville).

Population, income & housing

	Belleville	O'Fallon
Population	41,722	32,139
Median age	38.3 yrs	36.9 yrs
Median household income	$60,529	$102,793
Median home value	$131,000	$274,100
Median gross rent	$947	$1,312
Housing units	20,187	13,152
Homeownership rate	61.0%	70.9%
Bachelor's degree or higher	28.0%	51.3%
Unemployment rate	5.3%	3.3%

Trends (ACS 5-year, 2019–2023)

	Belleville	O'Fallon
Population	41,585 → 41,722 (+0.3%)	29,333 → 32,139 (+9.6%)
Median household income	$48,099 → $60,529 (+25.8%)	$90,349 → $102,793 (+13.8%)
Median home value	$93,700 → $131,000 (+39.8%)	$207,900 → $274,100 (+31.8%)
Median gross rent	$779 → $947 (+21.6%)	$1,066 → $1,312 (+23.1%)

Belleville

Population

41,58541,722

Median household income

$48,099$60,529

Median home value

$93,700$131,000

Median gross rent

$779$947

O'Fallon

Population

29,33332,139

Median household income

$90,349$102,793

Median home value

$207,900$274,100

Median gross rent

$1,066$1,312

Age & race/ethnicity

Age distribution (share)

	Belleville	O'Fallon
Under 5	5.4%	7.5%
5 to 17	17.6%	21.2%
18 to 24	7.9%	5.3%
25 to 34	13.8%	13.2%
35 to 44	15.5%	14.9%
45 to 54	11.9%	12.9%
55 to 64	12.3%	9.5%
65 to 74	9.5%	8.8%
75 and over	6.0%	6.9%

Race & ethnicity (share)

	Belleville	O'Fallon
White (non-Hispanic)	57.0%	70.3%
Black or African American	32.0%	13.5%
American Indian & Alaska Native	0.1%	0.1%
Asian	0.9%	2.9%
Native Hawaiian & Pacific Islander	0.1%	0.0%
Some other race	0.3%	0.3%
Two or more races	6.3%	6.9%
Hispanic or Latino	3.4%	6.0%

Educational attainment (age 25+)

Share of adults 25+

	Belleville	O'Fallon
No high school diploma	5.5%	3.1%
High school graduate	28.2%	14.7%
Some college or associate's	38.3%	31.0%
Bachelor's degree	15.2%	27.9%
Graduate or professional degree	12.8%	23.3%

Commute to work

How workers get to work (share)

	Belleville	O'Fallon
Drove alone	76.1%	75.2%
Carpooled	6.6%	5.4%
Public transit	3.6%	0.4%
Walked	1.7%	1.1%
Bicycle	0.1%	0.1%
Worked from home	11.0%	16.7%
Other means	0.8%	1.1%

Housing

Units in structure (share)

	Belleville	O'Fallon
1-unit, detached	64.5%	69.8%
1-unit, attached	4.7%	7.4%
2 to 4 units	14.4%	5.1%
5 to 19 units	11.7%	8.7%
20 or more units	2.2%	6.6%
Mobile home & other	2.5%	2.3%

Poverty & households

	Belleville	O'Fallon
Poverty rate	14.9%	4.4%
Average household size	2.27	2.58
Mean commute (minutes)	26	26
Median year structure built	1960	1995