Cost of Living in St. Mary Parish, LA

Modeled annual cost: $42,640.

Median family income: $65,357.

Affordability Snapshot

LA County Median

$44,055

State Rank

52thMost expensive counties in LA out of 64See Louisiana county rankings

Median Income

$65,357

Location Type

Not Metropolitan

Biggest category:

Transport is the biggest expense in St. Mary Parish, LA.

$12,031 per year.

Cost breakdown

Total

$42,640

Per year

  • Transport:$12,031
  • Housing:$9,144
  • Taxes:$7,712
  • Healthcare:$5,955
  • Other Costs:$4,014
  • Food:$3,785
  • Childcare:$0

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

Cheaper counties in Louisiana

1De Soto Parish, LA
$40,568
2Natchitoches Parish, LA
$40,973
3Webster Parish, LA
$41,073
4East Carroll Parish, LA
$41,127
5Madison Parish, LA
$41,355

Popular comparisons in Louisiana

See how St. Mary Parish, LA compares across the country.

Explore our cost of living interactive map to compare St. Mary Parish, LA 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. Mary Parish, LA (2026)