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US ZIP Code Profile

ZIP Code 39525
Diamondhead, Mississippi

ZIP code 39525 is in Diamondhead, located in Hancock County, Mississippi, within the Gulfport-Biloxi-Pascagoula metro area. Its 2020 Census population was 9,537. The estimated median adjusted gross income per tax return is $62,500, and about 6% of filers report $200,000 or more.

2020 Population
9,537
Census ZCTA
County
Hancock
FIPS 28045
Median income (est.)
$62,500
IRS SOI 2022
Land Area
10.678 mi²
+ 0.534 mi² water

01Location & Geography

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

Primary CityDiamondhead, MS
CountyHancock County (FIPS 28045)
StateMississippi (FIPS 28)
Metro Area (MSA)Gulfport-Biloxi-Pascagoula, MS Metro Area (25060)
Census Region / DivisionSouth Region · East South Central Division
Coordinates30.381931, -89.37078
Land / Water Area10.678 mi² land · 0.534 mi² water

02Income & Economics

Distribution of the 4,620 individual tax returns filed in 39525 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
22.3%
$25K–$50K
20.3%
$50K–$75K
14.7%
$75K–$100K
13.0%
$100K–$200K
23.8%
$200K+
5.8%
The $200,000+ bracket accounts for 27% of 39525's total adjusted gross income, from 6% of returns — a concentration that drives the gap between the median ($62,500) 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 39525's IRS income metrics, 2020–2022.

Median income (2021→2022)
$62,500
▲ 3.2%
Filers earning $200K+
5.8%
▼ 0.1 pt
Total filers
4,620
▲ 1.1%
GET /zipc/v2/zipcodes/39525/soi?year=… $55K 2020 $61K 2021 $62K 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 39525 ZCTA.

2000
5,886
 
2010
8,383
▲ +42.4%
2020
9,537
▲ +13.8%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypeBranch
Carrier Route SortD
USPS Finance Number270455
City AliasesBay Saint Louis, Bay St Louis, Diamondhead

06Frequently Asked Questions

What county is ZIP code 39525 in?

ZIP code 39525 is in Hancock County, Mississippi (county FIPS code 28045).

What city is ZIP code 39525?

The primary USPS city for 39525 is Diamondhead, MS.

What metro area (MSA) is 39525 in?

39525 is part of the Gulfport-Biloxi-Pascagoula, MS Metro Area (MSA code 25060).

What is the population of ZIP code 39525?

The 2020 Census population of 39525 was 9,537 residents.

What is the median income in ZIP code 39525?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 39525 is about $62,500, with around 6% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.