Lake St. Louis, MO Cost Of Living

Demographics | Crime | Cost Of Living
Updated: 2025-10-24

Cost Of Living In Lake St. Louis, MO Summary

Cost of living in Lake St. Louis research summary. The cost of living index is set to 100 for the average place in the United States. A cost of living index above 100 means Lake St. Louis is expensive. An index value below 100 means the city is a relatively cheap place to live.

On a city-by-city basis in Missouri, home prices and rent have the biggest impact on the cost of living. Here are the key takeaways based on Saturday Night Science:

  • The cost of living index in Lake St. Louis is 109, with 100 being the average.

  • The cost of living index in Lake St. Louis is 1.1x higher than the national average.

  • Lake St. Louis ranks as the #125 cheapest in Missouri out of 142.

  • Lake St. Louis ranks as the #3,556 cheapest out of 6,489 in the US.

  • The median home value in Lake St. Louis is $426,956.

  • The median income in Lake St. Louis is $123,427.

Table Of Contents

  1. Summary
  2. National Comparison
  3. Housing Breakdown
  4. Detailed Pricing
  5. Nearby Comparisons
109
Lake St. Louis's Overall Cost Of Living
1.1x
Higher Than The National Average

What is the cost of living in Lake St. Louis, MO?

According to the most recent data on the cost of living, Lake St. Louis has an overall cost of living index of 109, which is 1.1x higher than the national index of 100.

Compared to Missouri, Lake St. Louis has a cost of living index that's 1.2x higher than Missouri's index of 88.

The standard of living in Lake St. Louis ranks as #125 most affordable out of the 142 places we measured in Missouri. By definition, that implies Lake St. Louis ranks as the #17 most expensive place in the Show Me State.

For more reading on life in Lake St. Louis, check out:

125 out of 142
In Missouri
3,556 out of 6,489
In America

Lake St. Louis Cost Of Living Vs. Missouri

Six factors go into calculating the cost of living index in Lake St. Louis. Here is how it fairs on each of the criteria:

  • The Services index in Lake St. Louis is 94.

  • The Groceries index in Lake St. Louis is 99.

  • The Health index in Lake St. Louis is 87.

  • The Housing index in Lake St. Louis is 145.

  • The Transportation index in Lake St. Louis is 95.

  • The Utilities index in Lake St. Louis is 100.

Living Expense Lake St. Louis Missouri National Average
Overall 109 88 100
Services 94 93 100
Groceries 99 96 100
Health 87 91 100
Housing 145 78 100
Transportation 95 90 100
Utilities 100 99 100
For more reading on cost of living around Missouri, check out:
Lake St. Louis Cost of Living Vs. MO

Lake St. Louis, MO Housing Cost Breakdown

Housing swings affordability the most between places in Missouri, so we broke down housing costs into more detail. Home and income data comes from the most recent US Census ACS 2019-2023. The key points are:

  • The Median Home Value in Lake St. Louis is $426,956.

  • The Median Rent in Lake St. Louis is $1,608.

  • The Median Income in Lake St. Louis is $123,427.

  • The Home Value To Income in Lake St. Louis is 3.5x.

  • The Rent To Monthly Income in Lake St. Louis is 0.16x.

Statistic Lake St. Louis Missouri United States
Median Home Value $426,956 $257,929 $303,400
Median Rent $1,608 $996 $1,348
Median Income $123,427 $68,920 $78,538
Home Value To Income 3.5x 3.7x 3.9x
Rent To Monthly Income 0.16x 0.17x 0.21x
$426,956
Median Home Value
$1,608
Median Rent
$123,427
Median Income

Lake St. Louis, MO Costs By Category

Detailed Lake St. Louis Services Costs Vs. Missouri

Item Lake St. Louis Missouri
Shampoo $1.11 $1.28
Movie $11.28 $12.13
Bowling $16.92 $18
Haircut $21.19 $24.26
Beauty Salon $40.57 $45.56

Detailed Lake St. Louis Groceries Costs Vs. Missouri

Item Lake St. Louis Missouri
Ground Beef $6.4 $5.84
Fried Chicken $1.36 $1.57
Milk $4.5 $4.67
Potatoes $5.28 $4.93
Pizza $10.84 $12.09
Beer $9.47 $10.41
Toothpaste $3.75 $3.7

Detailed Lake St. Louis Health Costs Vs. Missouri

Item Lake St. Louis Missouri
Optometrist $125.72 $125.68
Doctor $124.51 $135.78
Dentist $100.78 $113.29

Detailed Lake St. Louis Transportation Costs Vs. Missouri

Item Lake St. Louis Missouri
Gasoline $3.2 $3.46
Tire Balancing $50.0 $59.92

Detailed Lake St. Louis Utilities Costs Vs. Missouri

Item Lake St. Louis Missouri
All Electricity $133.84 $193.99
Phone $188.69 $192.25

Lake St. Louis SnackAbility

9
/10
Overall SnackAbility
Jobs
8.5/10
Housing
8.5
Affordability
8.5
Diversity
6
Safety
7
Amenities
8.5
Education
9
Commute
7

Cost Of Living In Cities Around Lake St. Louis

The cost of living varies in the cities and towns around Lake St. Louis. Here's a quick look at the cost of living in the most populous nearby places:

  • O'Fallon, MO has a cost of living index of 105, 1.0x Lake St. Louis.

  • St. Peters, MO has a cost of living index of 96, 0.9x Lake St. Louis.

  • Chesterfield, MO has a cost of living index of 121, 1.1x Lake St. Louis.

City Population Cost Of Living Vs. Lake St. Louis
O'Fallon, MO 92,697 105 1.0x
St. Peters, MO 58,200 96 0.9x
Chesterfield, MO 49,591 121 1.1x
Wentzville, MO 45,734 104 1.0x
Wildwood, MO 35,168 124 1.1x
Ballwin, MO 30,835 109 1.0x
Dardenne Prairie, MO 13,137 113 1.0x
Town and Country, MO 11,605 161 1.5x
Ellisville, MO 9,908 105 1.0x
Cottleville, MO 5,750 120 1.1x

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