O'Fallon vs Swansea

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

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

O'Fallon has the higher population (32,139 vs 14,603 in Swansea). O'Fallon has the higher median household income ($102,793 vs $84,367 in Swansea). O'Fallon has the higher median home value ($274,100 vs $211,700 in Swansea).

Population, income & housing

	O'Fallon	Swansea
Population	32,139	14,603
Median age	36.9 yrs	38.4 yrs
Median household income	$102,793	$84,367
Median home value	$274,100	$211,700
Median gross rent	$1,312	$1,178
Housing units	13,152	5,929
Homeownership rate	70.9%	75.3%
Bachelor's degree or higher	51.3%	43.1%
Unemployment rate	3.3%	4.8%

Trends (ACS 5-year, 2019–2023)

	O'Fallon	Swansea
Population	29,333 → 32,139 (+9.6%)	13,851 → 14,603 (+5.4%)
Median household income	$90,349 → $102,793 (+13.8%)	$77,517 → $84,367 (+8.8%)
Median home value	$207,900 → $274,100 (+31.8%)	$167,000 → $211,700 (+26.8%)
Median gross rent	$1,066 → $1,312 (+23.1%)	$1,062 → $1,178 (+10.9%)

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

Swansea

Population

13,85114,603

Median household income

$77,517$84,367

Median home value

$167,000$211,700

Median gross rent

$1,062$1,178

Age & race/ethnicity

Age distribution (share)

	O'Fallon	Swansea
Under 5	7.5%	5.9%
5 to 17	21.2%	17.2%
18 to 24	5.3%	9.5%
25 to 34	13.2%	13.9%
35 to 44	14.9%	11.7%
45 to 54	12.9%	10.3%
55 to 64	9.5%	13.6%
65 to 74	8.8%	10.5%
75 and over	6.9%	7.4%

Race & ethnicity (share)

	O'Fallon	Swansea
White (non-Hispanic)	70.3%	71.8%
Black or African American	13.5%	17.7%
American Indian & Alaska Native	0.1%	0.0%
Asian	2.9%	2.4%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.3%	0.0%
Two or more races	6.9%	7.1%
Hispanic or Latino	6.0%	1.1%

Educational attainment (age 25+)

Share of adults 25+

	O'Fallon	Swansea
No high school diploma	3.1%	3.4%
High school graduate	14.7%	21.3%
Some college or associate's	31.0%	32.2%
Bachelor's degree	27.9%	23.7%
Graduate or professional degree	23.3%	19.3%

Commute to work

How workers get to work (share)

	O'Fallon	Swansea
Drove alone	75.2%	78.7%
Carpooled	5.4%	6.9%
Public transit	0.4%	0.8%
Walked	1.1%	0.2%
Bicycle	0.1%	0.0%
Worked from home	16.7%	12.8%
Other means	1.1%	0.6%

Housing

Units in structure (share)

	O'Fallon	Swansea
1-unit, detached	69.8%	70.9%
1-unit, attached	7.4%	3.7%
2 to 4 units	5.1%	4.6%
5 to 19 units	8.7%	6.1%
20 or more units	6.6%	5.9%
Mobile home & other	2.3%	8.8%

Poverty & households

	O'Fallon	Swansea
Poverty rate	4.4%	8.3%
Average household size	2.58	2.58
Mean commute (minutes)	26	26
Median year structure built	1995	1993