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US ZIP Code Profile

ZIP Code 39090
Kosciusko, Mississippi

ZIP code 39090 is in Kosciusko, located in Attala County, Mississippi. Its 2020 Census population was 12,639. The estimated median adjusted gross income per tax return is $35,017, and about 2% of filers report $200,000 or more.

2020 Population
12,639
Census ZCTA
County
Attala
FIPS 28007
Median income (est.)
$35,017
IRS SOI 2022
Land Area
265.293 mi²
+ 0.769 mi² water

01Location & Geography

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

Primary CityKosciusko, MS
CountyAttala County (FIPS 28007)
StateMississippi (FIPS 28)
Census Region / DivisionSouth Region · East South Central Division
Coordinates33.002014, -89.5439
Land / Water Area265.293 mi² land · 0.769 mi² water

02Income & Economics

Distribution of the 4,950 individual tax returns filed in 39090 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
38.2%
$25K–$50K
29.5%
$50K–$75K
12.9%
$75K–$100K
7.1%
$100K–$200K
9.9%
$200K+
2.4%
The $200,000+ bracket accounts for 22% of 39090's total adjusted gross income, from 2% of returns — a concentration that drives the gap between the median ($35,017) 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 39090's IRS income metrics, 2020–2022.

Median income (2021→2022)
$35,017
▲ 9.7%
Filers earning $200K+
2.4%
▲ 0.5 pt
Total filers
4,950
▼ 2.9%
GET /zipc/v2/zipcodes/39090/soi?year=… $30K 2020 $32K 2021 $35K 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 39090 ZCTA.

2000
13,443
 
2010
13,398
▼ -0.3%
2020
12,639
▼ -5.7%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number273965
City AliasesKosciusko

06Frequently Asked Questions

What county is ZIP code 39090 in?

ZIP code 39090 is in Attala County, Mississippi (county FIPS code 28007).

What city is ZIP code 39090?

The primary USPS city for 39090 is Kosciusko, MS.

What is the population of ZIP code 39090?

The 2020 Census population of 39090 was 12,639 residents.

What is the median income in ZIP code 39090?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 39090 is about $35,017, 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.