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US ZIP Code Profile

ZIP Code 70554
Mamou, Louisiana

ZIP code 70554 is in Mamou, located in Evangeline County, Louisiana. Its 2020 Census population was 5,540. The estimated median adjusted gross income per tax return is $26,887, and about 3% of filers report $200,000 or more.

2020 Population
5,540
Census ZCTA
County
Evangeline
FIPS 22039
Median income (est.)
$26,887
IRS SOI 2022
Land Area
115.268 mi²
+ 0.246 mi² water

01Location & Geography

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

Primary CityMamou, LA
CountyEvangeline County (FIPS 22039)
StateLouisiana (FIPS 22)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.61818, -92.484344
Land / Water Area115.268 mi² land · 0.246 mi² water

02Income & Economics

Distribution of the 2,300 individual tax returns filed in 70554 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
48.3%
$25K–$50K
23.0%
$50K–$75K
10.4%
$75K–$100K
6.1%
$100K–$200K
9.6%
$200K+
2.6%
The $200,000+ bracket accounts for 17% of 70554's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($26,887) 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 70554's IRS income metrics, 2020–2022.

Median income (2021→2022)
$26,887
▲ 11.2%
Filers earning $200K+
2.6%
▲ 0.5 pt
Total filers
2,300
▼ 2.5%
GET /zipc/v2/zipcodes/70554/soi?year=… $26K 2020 $24K 2021 $27K 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 70554 ZCTA.

2000
6,025
 
2010
5,582
▼ -7.4%
2020
5,540
▼ -0.8%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number215733
City AliasesMamou

06Frequently Asked Questions

What county is ZIP code 70554 in?

ZIP code 70554 is in Evangeline County, Louisiana (county FIPS code 22039).

What city is ZIP code 70554?

The primary USPS city for 70554 is Mamou, LA.

What is the population of ZIP code 70554?

The 2020 Census population of 70554 was 5,540 residents.

What is the median income in ZIP code 70554?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 70554 is about $26,887, with around 3% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.