O'Fallon vs St. Peters

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

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

O'Fallon has the higher population (92,697 vs 58,200 in St. Peters). O'Fallon has the higher median household income ($107,203 vs $89,827 in St. Peters). O'Fallon has the higher median home value ($305,100 vs $252,800 in St. Peters).

Population, income & housing

	O'Fallon	St. Peters
Population	92,697	58,200
Median age	38.2 yrs	41.1 yrs
Median household income	$107,203	$89,827
Median home value	$305,100	$252,800
Median gross rent	$1,400	$1,291
Housing units	35,553	24,871
Homeownership rate	80.2%	80.9%
Bachelor's degree or higher	42.4%	39.7%
Unemployment rate	2.7%	2.3%

Trends (ACS 5-year, 2019–2023)

	O'Fallon	St. Peters
Population	87,242 → 92,697 (+6.3%)	57,273 → 58,200 (+1.6%)
Median household income	$90,025 → $107,203 (+19.1%)	$78,786 → $89,827 (+14.0%)
Median home value	$226,300 → $305,100 (+34.8%)	$182,200 → $252,800 (+38.7%)
Median gross rent	$1,103 → $1,400 (+26.9%)	$990 → $1,291 (+30.4%)

O'Fallon

Population

87,24292,697

Median household income

$90,025$107,203

Median home value

$226,300$305,100

Median gross rent

$1,103$1,400

St. Peters

Population

57,27358,200

Median household income

$78,786$89,827

Median home value

$182,200$252,800

Median gross rent

$990$1,291

Age & race/ethnicity

Age distribution (share)

	O'Fallon	St. Peters
Under 5	6.3%	6.0%
5 to 17	18.2%	15.3%
18 to 24	7.1%	7.5%
25 to 34	13.7%	11.8%
35 to 44	13.9%	14.5%
45 to 54	14.5%	10.6%
55 to 64	12.3%	15.4%
65 to 74	8.4%	11.9%
75 and over	5.5%	6.8%

Race & ethnicity (share)

	O'Fallon	St. Peters
White (non-Hispanic)	81.4%	84.9%
Black or African American	5.0%	5.3%
American Indian & Alaska Native	0.1%	0.0%
Asian	4.1%	2.4%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.5%	0.1%
Two or more races	3.8%	4.6%
Hispanic or Latino	5.1%	2.8%

Educational attainment (age 25+)

Share of adults 25+

	O'Fallon	St. Peters
No high school diploma	4.5%	3.8%
High school graduate	23.0%	22.2%
Some college or associate's	30.1%	34.3%
Bachelor's degree	27.5%	25.2%
Graduate or professional degree	14.9%	14.4%

Commute to work

How workers get to work (share)

	O'Fallon	St. Peters
Drove alone	77.7%	74.9%
Carpooled	4.5%	7.0%
Public transit	0.1%	0.2%
Walked	0.6%	0.7%
Bicycle	0.0%	0.0%
Worked from home	15.7%	16.0%
Other means	1.5%	1.2%

Housing

Units in structure (share)

	O'Fallon	St. Peters
1-unit, detached	74.5%	69.1%
1-unit, attached	9.2%	10.3%
2 to 4 units	2.4%	6.8%
5 to 19 units	5.7%	7.6%
20 or more units	5.0%	3.9%
Mobile home & other	3.3%	2.3%

Poverty & households

	O'Fallon	St. Peters
Poverty rate	4.7%	5.1%
Average household size	2.66	2.41
Mean commute (minutes)	26	24
Median year structure built	2000	1988