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US ZIP Code Profile

ZIP Code 38642
Lamar, Mississippi

ZIP code 38642 is in Lamar, located in Marshall County, Mississippi, within the Memphis metro area. Its 2020 Census population was 2,190. The estimated median adjusted gross income per tax return is $33,065, and about 3% of filers report $200,000 or more.

2020 Population
2,190
Census ZCTA
County
Marshall
FIPS 28093
Median income (est.)
$33,065
IRS SOI 2022
Land Area
83.138 mi²
+ 0.201 mi² water

01Location & Geography

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

Primary CityLamar, MS
CountyMarshall County (FIPS 28093)
StateMississippi (FIPS 28)
Metro Area (MSA)Memphis, TN-MS-AR Metro Area (32820)
Census Region / DivisionSouth Region · East South Central Division
Coordinates34.9289, -89.334595
Land / Water Area83.138 mi² land · 0.201 mi² water

02Income & Economics

Distribution of the 1,100 individual tax returns filed in 38642 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
40.9%
$25K–$50K
28.2%
$50K–$75K
12.7%
$75K–$100K
6.4%
$100K–$200K
9.1%
$200K+
2.7%
The $200,000+ bracket accounts for 19% of 38642's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($33,065) 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 38642's IRS income metrics, 2020–2022.

Median income (2021→2022)
$33,065
▲ 5.8%
Filers earning $200K+
2.7%
▲ 1.0 pt
Total filers
1,100
▼ 4.3%
GET /zipc/v2/zipcodes/38642/soi?year=… $30K 2020 $31K 2021 $33K 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 38642 ZCTA.

2000
2,508
 
2010
2,321
▼ -7.5%
2020
2,190
▼ -5.6%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number274069
City AliasesEarlygrove, Lamar, Slayden

06Frequently Asked Questions

What county is ZIP code 38642 in?

ZIP code 38642 is in Marshall County, Mississippi (county FIPS code 28093).

What city is ZIP code 38642?

The primary USPS city for 38642 is Lamar, MS.

What metro area (MSA) is 38642 in?

38642 is part of the Memphis, TN-MS-AR Metro Area (MSA code 32820).

What is the population of ZIP code 38642?

The 2020 Census population of 38642 was 2,190 residents.

What is the median income in ZIP code 38642?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 38642 is about $33,065, with around 3% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.