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Lafayette, LA

Cost of living in St. Martin Parish, LA

Part of the Lafayette Metro Area

Estimated monthly cost
$2,851/mo
for a single person, all categories combined

Population 51,559 · Last updated May 21, 2026

Cost breakdown

Single person, by category, per month.

Rent $930 33%
Healthcare $480 17%
Federal tax $469 16%
Transport $320 11%
Groceries $315 11%
Energy $186 7%
State tax $96 3%
Water $55 2%

Rent in St. Martin Parish

Fair Market Rents by bedroom count.

Studio
$740
per month
1 bedroom
$930
per month
2 bedroom
$1,052
per month
3 bedroom
$1,322
per month
4 bedroom
$1,736
per month

Source: HUD FMR FY2025

Income and earnings in St. Martin Parish

Annual earnings figures from the Census ACS.

Household income
$53,394
per year
Individual earnings
$38,725
per year
Per capita
$29,983
per year

Source: ACS 2019-2023 5-Year.

Home values in St. Martin Parish

Average values reported by homeowners.

Average home value
$151,000
Annual property tax
$610

Source: ACS 2019-2023 5-Year

Energy costs in St. Martin Parish

Estimated monthly electricity and gas costs.

Electricity
$152
per month · 12.7¢/kWh
Natural gas
$34
per month
Annual total
$2,232
per year

Source: EIA

Healthcare in St. Martin Parish

Insurance premiums and coverage rates.

Individual premium
$480
per month
Family premium
$1,350
per month
Uninsured rate
6.7%

Source: ACS + national avg. Marketplace benchmark premiums are second-lowest Silver plan estimates and do not reflect employer plans, subsidies, or out-of-pocket costs. This is not healthcare advice.

Taxes in St. Martin Parish

State and local tax rates for Louisiana.

State income tax
4.3%
Top marginal rate
State sales tax
4.5%
Combined sales tax
9.6%
incl. average local

Tax rates change. Consult a qualified tax professional for advice on your specific situation. This is not tax advice.

Transportation in St. Martin Parish

Commute patterns and estimated costs.

Average commute
28.0 min
Drive alone
84.8%
Public transit
0.2%
Work from home
6.3%

Source: ACS

Monthly cost estimates for St. Martin Parish

What it costs to live in St. Martin Parish each month.

Single person
$2,851
per month
  • Rent $930
  • Energy $186
  • Water $55
  • Groceries $315
  • Transport $320
  • Healthcare $480
  • Federal tax $469
  • State tax $96
Couple
$3,831
per month
  • Rent $1,052
  • Energy $223
  • Water $65
  • Groceries $522
  • Transport $420
  • Healthcare $864
  • Federal tax $544
  • State tax $141
Family
$6,223
per month
  • Rent $1,322
  • Energy $279
  • Water $75
  • Groceries $792
  • Transport $520
  • Healthcare $1,350
  • Childcare $1,200
  • Federal tax $544
  • State tax $141

Frequently asked questions about St. Martin Parish

Common questions about cost of living, rent and salary.

What is the average rent in St. Martin Parish?

In St. Martin Parish, LA, a one-bedroom apartment averages $930 per month, a two-bedroom averages $1,052 per month, a three-bedroom averages $1,322 per month, according to HUD Fair Market Rent data.

What is the average salary in St. Martin Parish?

In St. Martin Parish, LA, the average household income is $53,394 per year and individual earnings for full-time workers average $38,725 per year, according to U.S. Census Bureau data.

What is the cost of living in St. Martin Parish?

The estimated cost of living in St. Martin Parish, LA is approximately $2,851 per month for a single person, $3,831 for a couple, $6,223 for a family. This includes rent, utilities, groceries, transportation, healthcare, and taxes.

What is the sales tax rate in St. Martin Parish?

The combined sales tax rate in St. Martin Parish, LA is 9.55%, which includes the Louisiana state rate of 4.45% plus an average local rate of 5.10%.

Is St. Martin Parish an affordable place to live?

Based on the data, a single person in St. Martin Parish, LA would need approximately $2,851 per month to cover rent, utilities, food, transport, healthcare, and taxes. The average household income is $53,394 per year ($4,450 per month). St. Martin Parish has a moderate cost of living relative to local earnings.

How much does healthcare cost in St. Martin Parish?

The ACA marketplace benchmark premium in St. Martin Parish, LA is approximately $480 per month for an individual. Approximately 6.7% of residents are uninsured. Actual costs vary based on employer coverage, plan type, and individual circumstances.

What are house prices in St. Martin Parish?

The average home value in St. Martin Parish, LA is $151,000, with average annual property taxes of $610, according to U.S. Census Bureau data.

How does St. Martin Parish compare to other areas?

You can compare St. Martin Parish, LA with any other US county using our comparison tool at /compare. St. Martin Parish is in the Lafayette, LA metro area.

Other counties in Louisiana

Browse the full list of counties in Louisiana, ranked by cost of living.

See all counties in Louisiana

Compare St. Martin Parish with another area

Put two counties side by side to see how rent, taxes and everyday costs stack up.

About this data

All figures on this page come from official U.S. government sources, listed below.

  • HUD FMR FY2025
  • ACS 2019-2023 5-Year
  • EIA
  • ACS + national avg
  • ACS
  • USDA + BEA RPP
Methodology All data sources