Residential delivery area · Louisiana
ZIP Code 70342: Berwick, LA
ZIP code 70342 is in Berwick, Louisiana, entirely in St. Mary Parish (Census 2020 ZIP-county file). About 4,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $51,580 (Census Bureau, ACS 2020-2024). By Census place, 78% of its land lies in Berwick; 22% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Berwick · its only residential ZIP
- County
- St. Mary Parish
- Census places
- Berwick
- Micro area
- Morgan City, LA
- House district
- LA-3 119th Congress
- State
- Louisiana
- Time zone
- Central
- Land area
- 7.5 sq mi · 617 people per sq mi
Where is ZIP code 70342?
70342 centers on 29.693°, -91.238° and covers 7.5 square miles of land plus 1.1 of water. It borders 2 ZIP codes: 70392, 70380.
The map draws ZIP code areas only. For the streets inside 70342, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 70342 compare with the rest of St. Mary Parish?
| Measure | 70342 | In St. Mary Parish | In LA |
|---|---|---|---|
| People (ACS 2020-2024) | 4,607 | 5th of 9 | 234th of 539 |
| Median household income | $52k | not ranked | not ranked |
| Median home value | $212k | 1st of 5 | 104th of 285 |
70342's median household income is not ranked: its 90% margin of error (±$13,786) is more than a quarter of the figure ($51,580). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 74% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 70342?
The 2020 Census counted 4,806 people in 70342; the ACS, which samples households over 2020-2024, estimates 4,607. Between the 2010 and 2020 censuses its population fell 3.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 4,607
- 2020 Census count
- 4,806−3.5% since 2010 (4,979)
- Households
- 1,712
- Median age
- 34.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 70342?
Of the 4,607 people the ACS estimates in 70342, 29.6% are under 18 and 13.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (76.2%), then Black (not Hispanic) (10.7%).
- Under 1829.6%
- 18 to 6457.1%
- 65 and older13.3%
- White, not Hispanic76.2%
- Black, not Hispanic10.7%
- Hispanic or Latino9.6%
- Other or two or more3.6%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 70342 earn?
Median household income is $51,580 (ACS 2020-2024). It is not measurably different from 2015-2019 ($54,167 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $51,580±$13,786
- Income per person
- $29,060
- Below the poverty line
- 18.6%
- Unemployed (of the labor force)
- 5.2%
- Adults 25+ with a bachelor's degree
- 27.3%
- Adjusted gross income per tax return, 2022
- $81,2661,940 returns; wages 66% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 70342?
FHFA's house price index for 70342, built from repeat sales and appraisals of the same homes, rose 22% from 2015 to 2025 and rose 16% from 2020 to 2025, and moved −2.3% in 2025.
- Median home value (owners' estimate)
- $212,400
- Median gross rent
- $493
- Homes owned by their occupants
- 70.2%
- Housing units
- 1,958
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 70342?
75 business establishments had a location in this ZIP code in 2023, the same count as in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade12
- Other services (except public administration)8
- Professional, scientific, and technical services7
- Construction6
- Health care and social assistance6
- Manufacturing5
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 70342?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 70392 | Patterson | 8,173 | $58k | 4.8 mi |
| 70380 | Morgan City | 20,529 | $55k | 9.1 mi |
| 70340 | Amelia | 0 | – | 8.2 mi (near) |
| 70522 | Centerville | 495 | $26k | 12.4 mi (near) |
| 70339 | Pierre Part | 4,848 | $52k | 15.0 mi (near) |
| 70372 | Labadieville | 1,968 | $41k | 16.2 mi (near) |
| 70356 | Gibson | 1,495 | $33k | 16.6 mi (near) |
| 70538 | Franklin | 12,464 | $52k | 16.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.