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US ZIP Code Profile

ZIP Code 70345
Cut Off, Louisiana

ZIP code 70345 is in Cut Off, located in Lafourche County, Louisiana, within the Houma-Thibodaux metro area. Its 2020 Census population was 9,119. The estimated median adjusted gross income per tax return is $46,377, and about 4% of filers report $200,000 or more.

2020 Population
9,119
Census ZCTA
County
Lafourche
FIPS 22057
Median income (est.)
$46,377
IRS SOI 2022
Land Area
92.931 mi²
+ 14.667 mi² water

01Location & Geography

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

Primary CityCut Off, LA
CountyLafourche County (FIPS 22057)
StateLouisiana (FIPS 22)
Metro Area (MSA)Houma-Thibodaux, LA Metro Area (26380)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.548416, -90.25902
Land / Water Area92.931 mi² land · 14.667 mi² water

02Income & Economics

Distribution of the 3,400 individual tax returns filed in 70345 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
32.6%
$25K–$50K
20.3%
$50K–$75K
14.7%
$75K–$100K
10.9%
$100K–$200K
17.6%
$200K+
3.8%
The $200,000+ bracket accounts for 30% of 70345's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($46,377) 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 70345's IRS income metrics, 2020–2022.

Median income (2021→2022)
$46,377
▲ 7.1%
Filers earning $200K+
3.8%
▲ 0.4 pt
Total filers
3,400
▲ 5.3%
GET /zipc/v2/zipcodes/70345/soi?year=… $41K 2020 $43K 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 70345 ZCTA.

2000
13,053
 
2010
9,754
▼ -25.3%
2020
9,119
▼ -6.5%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number212093
City AliasesCut Off

06Frequently Asked Questions

What county is ZIP code 70345 in?

ZIP code 70345 is in Lafourche County, Louisiana (county FIPS code 22057).

What city is ZIP code 70345?

The primary USPS city for 70345 is Cut Off, LA.

What metro area (MSA) is 70345 in?

70345 is part of the Houma-Thibodaux, LA Metro Area (MSA code 26380).

What is the population of ZIP code 70345?

The 2020 Census population of 70345 was 9,119 residents.

What is the median income in ZIP code 70345?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 70345 is about $46,377, with around 4% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.