Cost of Living in St. Louis County, MO

Modeled annual cost: $48,272.

Median family income: $108,392.

Affordability Snapshot

MO County Median

$43,629

State Rank

6thMost expensive counties in MO out of 115See Missouri county rankings

Median Income

$108,392

Location Type

Metro

Biggest category:

Housing is the biggest expense in St. Louis County, MO.

$12,328 per year.

Cost breakdown

Total

$48,272

Per year

  • Housing:$12,328
  • Transport:$11,710
  • Taxes:$9,210
  • Other Costs:$5,296
  • Healthcare:$4,996
  • Food:$4,731
  • Childcare:$0

* Percentages may not add up to 100% due to rounding.

Cheaper counties in Missouri

1St. Francois County, MO
$40,306
2Washington County, MO
$40,420
3Pemiscot County, MO
$40,690
4Dunklin County, MO
$40,700
5Wright County, MO
$41,275

Popular comparisons in Missouri

Los Angeles County vs St. Louis County→Cook County vs St. Louis County→Harris County vs St. Louis County→Maricopa County vs St. Louis County→Orange County vs St. Louis County→San Diego County vs St. Louis County→Kings County vs St. Louis County→Miami-Dade County vs St. Louis County→

See how St. Louis County, MO compares across the country.

Explore our cost of living interactive map to compare St. Louis County, MO with multiple counties in the United States.

Use the Cost of Living Map Launch WatchPennies cost of living map
How WatchPennies calculates salary needed
Cost of Living in St. Louis County, MO (2026)