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US ZIP Code Profile

ZIP Code 70380
Morgan City, Louisiana

ZIP code 70380 is in Morgan City, located in Saint Mary County, Louisiana, within the Morgan City metro area. Its 2020 Census population was 21,079. The estimated median adjusted gross income per tax return is $36,832, and about 2% of filers report $200,000 or more.

2020 Population
21,079
Census ZCTA
County
Saint Mary
FIPS 22101
Median income (est.)
$36,832
IRS SOI 2022
Land Area
64.64 mi²
+ 13.371 mi² water

01Location & Geography

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

Primary CityMorgan City, 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
Coordinates29.75436, -91.13378
Land / Water Area64.64 mi² land · 13.371 mi² water

02Income & Economics

Distribution of the 7,450 individual tax returns filed in 70380 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
38.1%
$25K–$50K
25.1%
$50K–$75K
14.4%
$75K–$100K
8.1%
$100K–$200K
11.9%
$200K+
2.4%
The $200,000+ bracket accounts for 19% of 70380's total adjusted gross income, from 2% of returns — a concentration that drives the gap between the median ($36,832) 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 70380's IRS income metrics, 2020–2022.

Median income (2021→2022)
$36,832
▲ 11.5%
Filers earning $200K+
2.4%
▲ 0.5 pt
Total filers
7,450
▼ 2.9%
GET /zipc/v2/zipcodes/70380/soi?year=… $32K 2020 $33K 2021 $37K 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 70380 ZCTA.

2000
21,807
 
2010
22,928
▲ +5.1%
2020
21,079
▼ -8.1%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number216292
City AliasesBayou Vista, Morgan City

06Frequently Asked Questions

What county is ZIP code 70380 in?

ZIP code 70380 is in Saint Mary County, Louisiana (county FIPS code 22101).

What city is ZIP code 70380?

The primary USPS city for 70380 is Morgan City, LA.

What metro area (MSA) is 70380 in?

70380 is part of the Morgan City, LA Micro Area (MSA code 34020).

What is the population of ZIP code 70380?

The 2020 Census population of 70380 was 21,079 residents.

What is the median income in ZIP code 70380?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 70380 is about $36,832, with around 2% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.