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US ZIP Code Profile

ZIP Code 70342
Berwick, Louisiana

ZIP code 70342 is in Berwick, located in Saint Mary County, Louisiana, within the Morgan City metro area. Its 2020 Census population was 4,806. The estimated median adjusted gross income per tax return is $45,833, and about 6% of filers report $200,000 or more.

2020 Population
4,806
Census ZCTA
County
Saint Mary
FIPS 22101
Median income (est.)
$45,833
IRS SOI 2022
Land Area
7.432 mi²
+ 1.121 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityBerwick, LA
CountySaint Mary County (FIPS 22101)
StateLouisiana (FIPS 22)
Metro Area (MSA)Morgan City, LA Micro Area (34020)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.693148, -91.23834
Land / Water Area7.432 mi² land · 1.121 mi² water

02Income & Economics

Distribution of the 1,940 individual tax returns filed in 70342 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
32.0%
$25K–$50K
21.6%
$50K–$75K
14.4%
$75K–$100K
8.2%
$100K–$200K
17.5%
$200K+
6.2%
The $200,000+ bracket accounts for 36% of 70342's total adjusted gross income, from 6% of returns — a concentration that drives the gap between the median ($45,833) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 70342's IRS income metrics, 2020–2022.

Median income (2021→2022)
$45,833
▲ 9.7%
Filers earning $200K+
6.2%
▲ 0.5 pt
Total filers
1,940
▼ 0.5%
GET /zipc/v2/zipcodes/70342/soi?year=… $39K 2020 $42K 2021 $46K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 70342 ZCTA.

2000
4,418
 
2010
4,979
▲ +12.7%
2020
4,806
▼ -3.5%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number210871
City AliasesBerwick, Glenwild

06Frequently Asked Questions

What county is ZIP code 70342 in?

ZIP code 70342 is in Saint Mary County, Louisiana (county FIPS code 22101).

What city is ZIP code 70342?

The primary USPS city for 70342 is Berwick, LA.

What metro area (MSA) is 70342 in?

70342 is part of the Morgan City, LA Micro Area (MSA code 34020).

What is the population of ZIP code 70342?

The 2020 Census population of 70342 was 4,806 residents.

What is the median income in ZIP code 70342?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 70342 is about $45,833, with around 6% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.