St. Mary Parish · Louisiana
ZIP code 70342
- Population
- 4,732
- Median income
- $56,146
- Median home
- $190,600
- Sales tax
- 5%
ZCTA residents
Household, past 12 months
Owner-occupied value
Louisiana state rate
Quick answer
ZIP 70342 sits in St. Mary Parish, Louisiana and is home to 4,732 people. Median household income is $56,146, the median home is worth $190,600 and median gross rent is $492. 76.8% of households own their home, and purchases are taxed at 5% (Louisiana state rate).
- County
- St. Mary Parish
- State
- Louisiana (LA)
- Area codes
- Not published
- Metro area
- Outside covered metros
FIPS 22101
539 ZIPs covered
No NANPA match for this ZIP
Rate jurisdiction used for tax
The numbers for 70342
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 4,732ZIP 70342 residents
- Median household income
- $56,146Past 12 months, inflation adjusted
- Median home value
- $190,600Owner-occupied units
- Median gross rent
- $492Rent plus utilities, monthly
- Median age
- 32.9 yrsAll residents
- Homeownership rate
- 76.8%Owner-occupied households
Sales tax in 70342
What a purchase inside this ZIP costs at checkout.
Louisiana levies 5% statewide, and counties, cities and special districts inside this ZIP can add their own local rate on top. Check the county page for the local component before you quote a price.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 70342 compares
ZIP 70342 against the median ZIP in St. Mary Parish and across Louisiana.
| Measure | ZIP 70342 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $56,146 | $52,600 | $54,720 | +3% |
| Median home value | $190,600 | $127,500 | $154,300 | +24% |
| Median gross rent | $492 | $860 | $887 | -45% |
| Population | 4,732 | 1,757 | 3,279 | +44% |
Medians are computed across the 7 ZIP areas in St. Mary Parish and the 539 ZIP areas in Louisiana.
Statewide rank
Where this ZIP places among all 539 Louisiana ZIP areas.
- Income
- #223
- Home value
- #157
- Population
- #229
richer than 52% of 463 state ZIPs
above 66% of 456 state ZIPs
larger than 58% of 539 state ZIPs
Comparable ZIP codes
Louisiana ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under St. Mary Parish.
ZIP 70342 questions
Common questions about this ZIP code.
- Where is ZIP code 70342?
- ZIP 70342 lies mostly in St. Mary Parish, Louisiana. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 70342?
- Louisiana charges 5% statewide, plus any county, city or district rate that applies locally.
- Is 70342 expensive to live in?
- Median rent runs $492 a month, about 11% of median household income, and the median home is worth $190,600 — +24% against the typical Louisiana ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- Louisiana Department of Revenue — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.