O'Fallon

Population: 32,139
Median household income: $102,793
Median home value: $274,100

O'Fallon, a community in St. Clair County, Illinois, has 32,139 residents. The median household income of $102,793 is above the St. Clair County median ($70,178).

From 2019 to 2023, O'Fallon's population grew 9.6% from 29,333 to 32,139, while its median home value rose 31.8% from $207,900 to $274,100.

51.3% of adults 25 and older hold a bachelor's degree or higher. Owners occupy 70.9% of the area's occupied homes.

Demographics

ACS 2019–2023

Population: 32,139
Median age: 36.9 yrs
Median household income: $102,793
Median home value: $274,100
Median gross rent: $1,312
Housing units: 13,152
Homeownership rate: 70.9%
Bachelor's degree or higher: 51.3%
Unemployment rate: 3.3%

Trends

ACS 5-year · 2019–2023

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

Year	Population	Median household income	Median home value	Median gross rent
2019	29,333	$90,349	$207,900	$1,066
2020	29,487	$90,432	$214,600	$1,134
2021	31,963	$96,698	$224,000	$1,129
2022	32,104	$102,560	$260,700	$1,264
2023	32,139	$102,793	$274,100	$1,312

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

Age distribution

Under 57.5%

5 to 1721.2%

18 to 245.3%

25 to 3413.2%

35 to 4414.9%

45 to 5412.9%

55 to 649.5%

65 to 748.8%

75 and over6.9%

	Count	Share
Under 5	2,399	7.5%
5 to 17	6,812	21.2%
18 to 24	1,715	5.3%
25 to 34	4,236	13.2%
35 to 44	4,778	14.9%
45 to 54	4,133	12.9%
55 to 64	3,041	9.5%
65 to 74	2,819	8.8%
75 and over	2,206	6.9%

Race & ethnicity

	Count	Share
White (non-Hispanic)	22,602	70.3%
Black or African American	4,342	13.5%
American Indian & Alaska Native	23	0.1%
Asian	916	2.9%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	110	0.3%
Two or more races	2,230	6.9%
Hispanic or Latino (any race)	1,916	6.0%

Educational attainment (age 25+)

No high school diploma3.1%

High school graduate14.7%

Some college or associate's31.0%

Bachelor's degree27.9%

Graduate or professional degree23.3%

	Count	Share
No high school diploma	647	3.1%
High school graduate	3,113	14.7%
Some college or associate's	6,581	31.0%
Bachelor's degree	5,926	27.9%
Graduate or professional degree	4,946	23.3%

Commute to work

Mean travel time to work: 26 min

Drove alone75.2%

Carpooled5.4%

Public transit0.4%

Walked1.1%

Bicycle0.1%

Worked from home16.7%

Other means1.1%

How workers get to work

	Count	Share
Drove alone	11,369	75.2%
Carpooled	823	5.4%
Public transit	67	0.4%
Walked	160	1.1%
Bicycle	21	0.1%
Worked from home	2,523	16.7%
Other means	160	1.1%

Travel time

	Count	Share
Under 15 min	3,418	27.1%
15 to 29 min	5,014	39.8%
30 to 44 min	2,616	20.8%
45 to 59 min	969	7.7%
60+ min	583	4.6%

Households

Average household size: 2.58
Poverty rate: 4.4% (1,401 of 31,939)

	Count	Share
Family households	9,139	73.3%
Nonfamily households	3,322	26.7%

Housing

Median year structure built: 1995

Occupancy

	Count	Share
Occupied	12,461	94.7%
Vacant	691	5.3%

Tenure (of occupied units)

	Count	Share
Owner-occupied	8,833	70.9%
Renter-occupied	3,628	29.1%

1-unit, detached69.8%

1-unit, attached7.4%

2 to 4 units5.1%

5 to 19 units8.7%

20 or more units6.6%

Mobile home & other2.3%

Units in structure

	Count	Share
1-unit, detached	9,186	69.8%
1-unit, attached	979	7.4%
2 to 4 units	667	5.1%
5 to 19 units	1,148	8.7%
20 or more units	869	6.6%
Mobile home & other	303	2.3%

Geography

Place GEOID: 1755249
Type (LSAD): 25
Land area: 16 sq mi
Water area: 0.11 sq mi
Center point: 38.6000, -89.9154