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Missouri›Franklin County

Lake St. ClairMO

This town in Missouri has a population of 872.

Is Lake St. Clair a good place to live?

Lake St. Clair’s typical journey to work is 38 minutes, where Missouri’s towns sit at 22 minutes and U.S. towns at 25 minutes. No town among the 248 in Missouri we compare has a lower share of working residents who work in town than Lake St. Clair. Lake St. Clair has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Small town

872 people, and everyone knows the way

In a town this size, neighbors are the best guide. Ask them anything.

Nearby towns

The data

Ordered by what stands out in Lake St. Clair.

Work & commute

Most of Lake St. Clair’s workers commute out: the town has 0.0 jobs for each of them

0%work in town

The top destinations are St. Clair (14%), Union (6%) and St. Louis (5%). Half of commuters travel less than 32 miles. Lake St. Clair’s middle household income is $81,000.

Where working residents work

In Lake St. Clair0%
St. Clair14%
Union6%
St. Louis5%
Pacific4%
32 mi
median commute distance
10
jobs based in Lake St. Clair
A commuter town
jobs vs. working residents

Census LEHD 2023 · ACS

Who lives here

More children than Missouri overall

28.5median age · MO 39

Children under 18 are 36% of residents (22% statewide); people 65 and older are 7% of residents (18% statewide). Lake St. Clair’s age of the median resident comes in at 28.5 years. Four-year graduates: 28% of adults 25 and older here, 32% across Missouri.

Lake St. ClairMissouri townsU.S. towns
Median age28.5 years38.5 years40.5 years
Bachelor’s degree or more, 25+28%22%29%
Lake St. ClairMissouriUnited States

Ages · share of residents

Education · adults 25 and older

No diploma12%
High school33%
Some college11%
Associate’s17%
Bachelor’s21%
Graduate7%

Women and men · all residents

Somewhere between 39% and 79% women

The Census survey reached too few of Lake St. Clair’s residents to say more: its margin here is ±19.8 points. Across Missouri, 50.7% of residents are women.

Ages and education in Lake St. Clair
Lake St. ClairMOU.S.
Under 1026%11.9%11.6%
10 to 179.6%10.4%10.3%
18 to 248%9.1%9.1%
25 to 3412.8%13.2%13.7%
35 to 4417.1%12.8%13.2%
45 to 541.3%11.6%12.2%
55 to 6418.6%13%12.7%
65 to 743.2%10.6%10.2%
75 and older3.3%7.3%7%
No diploma11.6%8.1%10.4%
High school32.8%30.2%26%
Some college11%20.8%19.1%
Associate’s16.5%8.4%8.8%
Bachelor’s21.2%19.8%21.6%
Graduate6.9%12.6%14.1%

U.S. Census Bureau · ACS 2020-2024 5-year estimates · in a town of 900, single groups can be off by several points

Natural hazards

Lake St. Clair faces a high natural-hazard risk, led by inland flooding

73risk score of 100

FEMA expects more storm and flood damage in Lake St. Clair than in 73% of U.S. communities. 54% of the town’s expected losses from natural hazards come from inland flooding, followed by tornadoes at 11%.

FEMA risk score
73High riskLowerHigher
Inland floodingTornadoesHeat waves

FEMA National Risk Index · OpenFEMA

Climate

Expect four seasons and hot summers in Lake St. Clair

8″snow a winter

A winter brings about 8 inches of snow, with January nights at 21° and July afternoons at 89°.

Typical low → high °F

Winter24–44°
Spring43–67°
Summer64–87°
Fall45–68°
Oct 23
typical first frost
Apr 11
typical last frost
+0.9°
vs. the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Health

How healthy Lake St. Clair is

For adults in Lake St. Clair, the share who binge drink is 18%. In Lake St. Clair, 30% of adults feel lonely.

Lake St. ClairMissouri townsU.S. towns
Feel lonely (CDC PLACES)30%32%33%
Binge drink (CDC PLACES)18%16%16%
Depression (CDC PLACES)26%25%23%
Obesity (CDC PLACES)39%38%35%
32 measures vs. Missouri
3 better29 too close to call0 worse
What stands outLake St. ClairMO
Fewer adults facing food insecurity10.9%13.7%
Fewer adults facing a utility shut-off7.2%9%
Missouri Baptist Sullivan Hospital
12.8 mi away · emergency room
3 of 3
care shortages: primary care, dental, mental health

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA

2
homes sold in September

Zillow Home Value Index · Redfin Data Center

Keep exploring

Everything we know about Lake St. Clair

14pages on Lake St. Clair
Getting set up

Moving to Lake St. Clair: who provides what

Lake St. Clair is unincorporated, so Franklin County and regional agencies provide most services.

PowerUnion Electric13.3¢/kWh · EIA 2025HIFLD · EIA
WaterSt Clair PWSNo health-based violations in 5 years · EPAEPA
InternetProviders and speedsData pending · D4
Trash & county servicesFranklin CountyFranklin County provides services here
SchoolsSt. Clair R-XIII School DistrictWhich school depends on your addressNCES
Register to voteOnlineIn Missouri you can register online until 27 days before Election Day, in person until 27 days before Election Day, or by mail (postmarked 27 days before).vote.gov
Who runs elections hereFranklinFranklin County; contacts on the Handbook page.FVAP, Aug 2019
ZIP code6307763077 100%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.

A commuter town

100% of working residents leave Lake St. Clair for work

Where Lake St. Clair’s working residents go each day. Line width shows the share.

14% → St. Clair St. Clair 14% 6% → Union Union 6% 5% → St. Louis St. Louis 5% 4% → Pacific Pacific 4% 4% → Washington Washington 4% 3% → Chesterfield Chesterfield 3% Lake St. Clair · 0% stay
10jobs based in Lake St. Clair
0%of working residents work in town
32 mimedian commute distance

Census LEHD 2023

After high school

Colleges nearby

1 within 15 miles of the center of Lake St. Clair

About 5 of every 100 Lake St. Clair residents are enrolled in college, about the same as Missouri.

Prices by family income, graduation and earnings →

Questions about Lake St. Clair

Short answers, built from the data on this page.

Is Lake St. Clair, MO a good place to live?

Lake St. Clair has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Lake St. Clair is in here

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