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US ZIP Code Profile

ZIP Code 39664
Smithdale, Mississippi

ZIP code 39664 is in Smithdale, located in Amite County, Mississippi, within the McComb metro area. Its 2020 Census population was 2,479. The estimated median adjusted gross income per tax return is $46,875, and about 4% of filers report $200,000 or more.

2020 Population
2,479
Census ZCTA
County
Amite
FIPS 28005
Median income (est.)
$46,875
IRS SOI 2022
Land Area
116.521 mi²
+ 0.171 mi² water

01Location & Geography

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

Primary CitySmithdale, MS
CountyAmite County (FIPS 28005)
StateMississippi (FIPS 28)
Metro Area (MSA)McComb, MS Micro Area (32620)
Census Region / DivisionSouth Region · East South Central Division
Coordinates31.32597, -90.67416
Land / Water Area116.521 mi² land · 0.171 mi² water

02Income & Economics

Distribution of the 850 individual tax returns filed in 39664 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
29.4%
$25K–$50K
23.5%
$50K–$75K
14.1%
$75K–$100K
12.9%
$100K–$200K
16.5%
$200K+
3.5%
The $200,000+ bracket accounts for 19% of 39664's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($46,875) 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 39664's IRS income metrics, 2020–2022.

Median income (2021→2022)
$46,875
▲ 9.4%
Filers earning $200K+
3.5%
▲ 3.5 pt
Total filers
850
▼ 1.2%
GET /zipc/v2/zipcodes/39664/soi?year=… $40K 2020 $43K 2021 $47K 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 39664 ZCTA.

2000
2,034
 
2010
2,256
▲ +10.9%
2020
2,479
▲ +9.9%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number277553
City AliasesAuburn, Eastfork, Smithdale, Thompson

06Frequently Asked Questions

What county is ZIP code 39664 in?

ZIP code 39664 is in Amite County, Mississippi (county FIPS code 28005).

What city is ZIP code 39664?

The primary USPS city for 39664 is Smithdale, MS.

What metro area (MSA) is 39664 in?

39664 is part of the McComb, MS Micro Area (MSA code 32620).

What is the population of ZIP code 39664?

The 2020 Census population of 39664 was 2,479 residents.

What is the median income in ZIP code 39664?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 39664 is about $46,875, 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.