Is it cheaper to live in Casper or St. Louis?

Casper, WY is cheaper. Its monthly baseline of $930 (1BR rent + utilities) runs about 12% below St. Louis, MO's $1,060, mainly because of rent.

How much more do you need to earn to live in Casper than in St. Louis?

To keep rent near the recommended 30% of gross income, you'd want to earn roughly $31,000 a year in Casper versus $35,000 in St. Louis.

Which has lower taxes, Casper or St. Louis?

Casper is taxed under Wyoming's rules (no state income tax and a 4% state sales tax); St. Louis under Missouri's (a top state income tax rate of 4.70% and a 4.225% state sales tax).

Casper vs St. Louis Cost of Living 2026

Casper

Wyoming

$930/mo est.

St. Louis

Missouri

$1,060/mo est.

Monthly estimate = 1BR rent + electricity + gas

A one-person monthly baseline (1BR rent plus typical utilities) runs $930 in Casper, WY versus $1,060 in St. Louis, MO. Overall, Casper, WY is roughly 12% cheaper to live in day-to-day than St. Louis, MO, driven mainly by rent.

Median household income is $69,171 in Casper, WY and $55,279 in St. Louis, MO — about 20% higher in Casper, WY. Wyoming has no state income tax and a 4% state sales tax; Missouri has a top state income tax rate of 4.70% and a 4.225% state sales tax.

Casper, WY

St. Louis, MO

Rent

Studio

$730

$864

+18% in St. Louis, MO

1 Bedroom

$764

$866

+13% in St. Louis, MO

2 Bedroom

$930

$1,109

+19% in St. Louis, MO

3 Bedroom

$1,299

$1,135

+13% in Casper, WY

Buying a Home

Median Home Value

$250,700

$185,100

+26% in Casper, WY

Income

Median Household Income

$69,171

$55,279

+20% in Casper, WY

Metro Median Wage (annual)

$48,880

$49,990

+2% in St. Louis, MO

People & Lifestyle

Median Age

37.0 yr

36.6 yr

+0.4 yr in Casper, WY

Homeownership

70.3%

45.4%

+24.9 pp in Casper, WY

Bachelor's+ (25+)

30.0%

40.2%

+10.2 pp in St. Louis, MO

Avg Commute

16.9 min

22.2 min

+5.3 min in St. Louis, MO

Crime (per 100k/yr)

Violent Crime

302.4

1,372.9

+354% in St. Louis, MO

Property Crime

2,123.8

5,794.9

+173% in St. Louis, MO

FBI Crime Data Explorer. Offenses per 100,000 residents per year; agency reporting practices vary, so this is approximate.

Climate

Avg Annual Temperature

45.4°F

55.7°F

+10.3°F in St. Louis, MO

Annual Precipitation

12.5 in

40.9 in

+28.4 in in St. Louis, MO

Gas

Regular Gasoline

$4.27/gal

$3.85/gal

+10% in Casper, WY

Area: Rocky Mountain (PADD 4) vs Midwest (PADD 2).

Utilities

Electricity (¢/kWh)

15.2

16.2

+6% in St. Louis, MO

Natural Gas ($/MCF)

$18.28

$28.78

+57% in St. Louis, MO

Residential, state-level averages (EIA). MCF = 1,000 cubic feet.

Groceries

Milk (gal)

$4.82

$4.31

+10% in Casper, WY

Bread (lb)

$2.04

$1.66

+19% in Casper, WY

Eggs (doz)

$2.19

$3.63

+66% in St. Louis, MO

Ground Beef (lb)

$7.36

$6.77

+8% in Casper, WY

Chicken (lb)

$2.01

$2.10

+4% in St. Louis, MO

Bananas (lb)

$0.70

$0.62

+12% in Casper, WY

Average prices — West vs Midwest (BLS). Regional where available, otherwise U.S. average.

State Taxes

Sales Tax (WY / MO)

4.225%

+0.2 pp in MO

Income Tax (top rate)

None

4.70%

+4.7 pp in MO

Casper vs St. Louis — FAQ

Is it cheaper to live in Casper or St. Louis?: Casper, WY is cheaper. Its monthly baseline of $930 (1BR rent + utilities) runs about 12% below St. Louis, MO's $1,060, mainly because of rent.
How much more do you need to earn to live in Casper than in St. Louis?: To keep rent near the recommended 30% of gross income, you'd want to earn roughly $31,000 a year in Casper versus $35,000 in St. Louis.
Which has lower taxes, Casper or St. Louis?: Casper is taxed under Wyoming's rules (no state income tax and a 4% state sales tax); St. Louis under Missouri's (a top state income tax rate of 4.70% and a 4.225% state sales tax).

Sources: US Census Bureau, ACS 5-Year (rent, income, home value, demographics); NOAA Climate Normals 1981–2010 (climate); EIA weekly retail (gas); Tax Foundation 2026 (state taxes).