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US ZIP Code Profile

ZIP Code 38870
Smithville, Mississippi

ZIP code 38870 is in Smithville, located in Monroe County, Mississippi. Its 2020 Census population was 2,567. The estimated median adjusted gross income per tax return is $46,371, and about 2% of filers report $200,000 or more.

2020 Population
2,567
Census ZCTA
County
Monroe
FIPS 28095
Median income (est.)
$46,371
IRS SOI 2022
Land Area
64.725 mi²
+ 1.778 mi² water

01Location & Geography

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

Primary CitySmithville, MS
CountyMonroe County (FIPS 28095)
StateMississippi (FIPS 28)
Census Region / DivisionSouth Region · East South Central Division
Coordinates34.067432, -88.33628
Land / Water Area64.725 mi² land · 1.778 mi² water

02Income & Economics

Distribution of the 1,150 individual tax returns filed in 38870 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
27.0%
$25K–$50K
27.0%
$50K–$75K
16.5%
$75K–$100K
12.2%
$100K–$200K
15.7%
$200K+
1.7%
The $200,000+ bracket accounts for 10% of 38870's total adjusted gross income, from 2% of returns — a concentration that drives the gap between the median ($46,371) 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 38870's IRS income metrics, 2020–2022.

Median income (2021→2022)
$46,371
▲ 5.5%
Filers earning $200K+
1.7%
▼ 0.9 pt
Total filers
1,150
▲ 0.9%
GET /zipc/v2/zipcodes/38870/soi?year=… $44K 2020 $44K 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 38870 ZCTA.

2000
2,953
 
2010
3,122
▲ +5.7%
2020
2,567
▼ -17.8%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number277566
City AliasesSmithville, Turon

06Frequently Asked Questions

What county is ZIP code 38870 in?

ZIP code 38870 is in Monroe County, Mississippi (county FIPS code 28095).

What city is ZIP code 38870?

The primary USPS city for 38870 is Smithville, MS.

What is the population of ZIP code 38870?

The 2020 Census population of 38870 was 2,567 residents.

What is the median income in ZIP code 38870?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 38870 is about $46,371, 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.