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US ZIP Code Profile

ZIP Code 70447
Madisonville, Louisiana

ZIP code 70447 is in Madisonville, located in Saint Tammany County, Louisiana, within the New Orleans-Metairie metro area. Its 2020 Census population was 17,120. The estimated median adjusted gross income per tax return is $83,882, and about 15% of filers report $200,000 or more.

2020 Population
17,120
Census ZCTA
County
Saint Tammany
FIPS 22103
Median income (est.)
$83,882
IRS SOI 2022
Land Area
31.453 mi²
+ 2.534 mi² water

01Location & Geography

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

Primary CityMadisonville, LA
CountySaint Tammany County (FIPS 22103)
StateLouisiana (FIPS 22)
Metro Area (MSA)New Orleans-Metairie, LA Metro Area (35380)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.422655, -90.20586
Land / Water Area31.453 mi² land · 2.534 mi² water

02Income & Economics

Distribution of the 7,720 individual tax returns filed in 70447 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
21.2%
$25K–$50K
14.0%
$50K–$75K
11.3%
$75K–$100K
9.8%
$100K–$200K
28.5%
$200K+
15.2%
The $200,000+ bracket accounts for 52% of 70447's total adjusted gross income, from 15% of returns — a concentration that drives the gap between the median ($83,882) 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 70447's IRS income metrics, 2020–2022.

Median income (2021→2022)
$83,882
▲ 4.0%
Filers earning $200K+
15.2%
▲ 1.1 pt
Total filers
7,720
▼ 1.3%
GET /zipc/v2/zipcodes/70447/soi?year=… $73K 2020 $81K 2021 $84K 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 70447 ZCTA.

2000
3,916
 
2010
10,150
▲ +159.2%
2020
17,120
▲ +68.7%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number215707
City AliasesMadisonville

06Frequently Asked Questions

What county is ZIP code 70447 in?

ZIP code 70447 is in Saint Tammany County, Louisiana (county FIPS code 22103).

What city is ZIP code 70447?

The primary USPS city for 70447 is Madisonville, LA.

What metro area (MSA) is 70447 in?

70447 is part of the New Orleans-Metairie, LA Metro Area (MSA code 35380).

What is the population of ZIP code 70447?

The 2020 Census population of 70447 was 17,120 residents.

What is the median income in ZIP code 70447?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 70447 is about $83,882, with around 15% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.