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County ZIP codes · Mississippi · FIPS 28073

Lamar County, MS ZIP Codes

Lamar County, Mississippi has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 4 of the residential ones lie mainly in Lamar County and 1 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $46,401 in 39429 (Columbia) to $75,220 in 39402 (Hattiesburg) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Lamar County?

39402 · Hattiesburg: $75k39429 · Columbia: $46k39455 · Lumberton: $54k39475 · Purvis: $64k39482 · Sumrall: $64k394553942939482394753940239402 · Hattiesburg: $75k39429 · Columbia: $46k39455 · Lumberton: $54k39475 · Purvis: $64k39482 · Sumrall: $64k394553942939482394753940239402 · Hattiesburg: $75k39429 · Columbia: $46k39455 · Lumberton: $54k39475 · Purvis: $64k39482 · Sumrall: $64k3945539429394823947539402
The residential ZIP codes of Lamar County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $54,206 and $64,321.

They carry 5 postal town names: Hattiesburg, Columbia, Purvis, Sumrall, Lumberton.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 5 residential ZIP codes in Lamar County

4 ZIP codes lie mainly in Lamar County; 1 more reaches into it from a neighboring county and follows the first table.

Residential ZIP codes mainly in Lamar County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
39402 Hattiesburg 44,620 479 $75k $254k 56%
39475 Purvis 14,530 92 $64k $192k 83%
39482 Sumrall 12,606 64 $64k $200k 69%
39455 Lumberton 7,937 22 $54k $105k 46%

Partly in Lamar County

Residential ZIP codes mainly in another county that reach at least 1% into Lamar County, by their share here
In this county
39429 Columbia 16,320 55 $46k $142k 3%

Download the 5 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

5 ZIP codes of Lamar County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Lamar County and in the neighboring counties
ZIPIn LamarElsewhere
3940256%Forrest County 42%; Covington County 2%
394293%Marion County 96%; Jefferson Davis County 1%
3947583%Forrest County 17%
3948269%Jefferson Davis County 16%; Covington County 9%; Marion County 6%
3945546%Pearl River County 31%; Forrest County 11%; Stone County 8%; Marion County 4%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Lamar County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Lamar County starts with 394.

Three-digit prefixes of Lamar County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Lamar County's
PrefixSectional centerHereAll codes
394 Mobile, AL (SCF 365) 5 45

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.