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US ZIP Code Profile

ZIP Code 70665
Sulphur, Louisiana

ZIP code 70665 is in Sulphur, located in Calcasieu County, Louisiana, within the Lake Charles metro area. Its 2020 Census population was 12,532. The estimated median adjusted gross income per tax return is $56,445, and about 8% of filers report $200,000 or more.

2020 Population
12,532
Census ZCTA
County
Calcasieu
FIPS 22019
Median income (est.)
$56,445
IRS SOI 2022
Land Area
160.76 mi²
+ 5.564 mi² water

01Location & Geography

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

Primary CitySulphur, LA
CountyCalcasieu County (FIPS 22019)
StateLouisiana (FIPS 22)
Metro Area (MSA)Lake Charles, LA Metro Area (29340)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.121881, -93.451225
Land / Water Area160.76 mi² land · 5.564 mi² water

02Income & Economics

Distribution of the 5,010 individual tax returns filed in 70665 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
26.6%
$25K–$50K
20.2%
$50K–$75K
12.8%
$75K–$100K
9.8%
$100K–$200K
23.2%
$200K+
7.6%
The $200,000+ bracket accounts for 33% of 70665's total adjusted gross income, from 8% of returns — a concentration that drives the gap between the median ($56,445) 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 70665's IRS income metrics, 2020–2022.

Median income (2021→2022)
$56,445
▲ 9.6%
Filers earning $200K+
7.6%
▲ 1.2 pt
Total filers
5,010
▼ 3.7%
GET /zipc/v2/zipcodes/70665/soi?year=… $48K 2020 $51K 2021 $56K 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 70665 ZCTA.

2000
9,148
 
2010
10,743
▲ +17.4%
2020
12,532
▲ +16.7%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number218346
City AliasesSulphur

06Frequently Asked Questions

What county is ZIP code 70665 in?

ZIP code 70665 is in Calcasieu County, Louisiana (county FIPS code 22019).

What city is ZIP code 70665?

The primary USPS city for 70665 is Sulphur, LA.

What metro area (MSA) is 70665 in?

70665 is part of the Lake Charles, LA Metro Area (MSA code 29340).

What is the population of ZIP code 70665?

The 2020 Census population of 70665 was 12,532 residents.

What is the median income in ZIP code 70665?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 70665 is about $56,445, with around 8% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.