Lake St. Louis vs St. Peters

A side-by-side comparison of Lake St. Louis and St. Peters: population, income, housing, and more.

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

St. Peters has the higher population (58,200 vs 17,538 in Lake St. Louis). Lake St. Louis has the higher median household income ($123,427 vs $89,827 in St. Peters). Lake St. Louis has the higher median home value ($375,300 vs $252,800 in St. Peters).

Population, income & housing

	Lake St. Louis	St. Peters
Population	17,538	58,200
Median age	43.2 yrs	41.1 yrs
Median household income	$123,427	$89,827
Median home value	$375,300	$252,800
Median gross rent	$1,608	$1,291
Housing units	7,495	24,871
Homeownership rate	75.2%	80.9%
Bachelor's degree or higher	49.5%	39.7%
Unemployment rate	4.5%	2.3%

Trends (ACS 5-year, 2019–2023)

	Lake St. Louis	St. Peters
Population	15,989 → 17,538 (+9.7%)	57,273 → 58,200 (+1.6%)
Median household income	$92,298 → $123,427 (+33.7%)	$78,786 → $89,827 (+14.0%)
Median home value	$274,400 → $375,300 (+36.8%)	$182,200 → $252,800 (+38.7%)
Median gross rent	$1,130 → $1,608 (+42.3%)	$990 → $1,291 (+30.4%)

Lake St. Louis

Population

15,98917,538

Median household income

$92,298$123,427

Median home value

$274,400$375,300

Median gross rent

$1,130$1,608

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)

	Lake St. Louis	St. Peters
Under 5	3.2%	6.0%
5 to 17	16.8%	15.3%
18 to 24	10.3%	7.5%
25 to 34	8.7%	11.8%
35 to 44	13.2%	14.5%
45 to 54	13.2%	10.6%
55 to 64	14.9%	15.4%
65 to 74	9.9%	11.9%
75 and over	9.8%	6.8%

Race & ethnicity (share)

	Lake St. Louis	St. Peters
White (non-Hispanic)	86.7%	84.9%
Black or African American	4.2%	5.3%
American Indian & Alaska Native	0.1%	0.0%
Asian	1.5%	2.4%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.4%	0.1%
Two or more races	4.4%	4.6%
Hispanic or Latino	2.8%	2.8%

Educational attainment (age 25+)

Share of adults 25+

	Lake St. Louis	St. Peters
No high school diploma	2.8%	3.8%
High school graduate	16.7%	22.2%
Some college or associate's	31.0%	34.3%
Bachelor's degree	32.4%	25.2%
Graduate or professional degree	17.1%	14.4%

Commute to work

How workers get to work (share)

	Lake St. Louis	St. Peters
Drove alone	75.3%	74.9%
Carpooled	5.7%	7.0%
Public transit	0.0%	0.2%
Walked	0.2%	0.7%
Bicycle	0.0%	0.0%
Worked from home	18.3%	16.0%
Other means	0.5%	1.2%

Housing

Units in structure (share)

	Lake St. Louis	St. Peters
1-unit, detached	66.9%	69.1%
1-unit, attached	12.2%	10.3%
2 to 4 units	2.9%	6.8%
5 to 19 units	14.2%	7.6%
20 or more units	3.8%	3.9%
Mobile home & other	0.0%	2.3%

Poverty & households

	Lake St. Louis	St. Peters
Poverty rate	4.1%	5.1%
Average household size	2.44	2.41
Mean commute (minutes)	27	24
Median year structure built	1999	1988