ZIP Codes of Lamar County, MS

Population & People
Population & People
Total Population
35,073
Household Income
Household Income
Median Income
$60,805
Housing
Housing
Total Housing Units
15,200
Business & Economy
Business & Economy
Total Businesses
464
Employment
Employment
Employment Rate
56.26%
Education
Education
Bachelor's Degree+
21.81%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 3 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:3 ZIP Codes (3 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:601 / 769
Timezone:Central (GMT -06:00)
Local Time:2:12:49 PM
Population:35,073 [See All]
FIPS:28073
CBSA:Hattiesburg, MS
Land Area:721 sq mi
Water Area:3 sq mi
Coordinates:31.1843, -89.4939
Quick Link:
https://www.zip-codes.com/county/ms-lamar.asp
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Among Mississippi's 5 fastest-growing counties
#3 statewide, up 13.8% from 2014 to 2024.

Standout ZIPs in this County


Most Populous
Purvis · 14,530 people
41.4% of county total
Highest Income
Sumrall · $64,321 median
1.1× county average
Largest Land Area
Lumberton · 359.5 sq mi
Spans the most ground
Fastest Growth
Sumrall · 41.8% (10-yr)
8,893 → 12,606 residents
Most Educated
Purvis · 31.0% bachelor's+
3,070 of 9,907 adults 25+

Things worth knowing about Lamar County


35,073 residents live across 3 ZIPs covering 721 sq mi, served by 3 distinct USPS-recognized cities.

Population moved from 30,828 to 35,073 from 2014 to 2024 — a +13.8% change. 2 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 39482 (Sumrall, $64,321 median) and poorest ZIP 39455 (Lumberton, $54,206) are 26.6 miles apart — a 1.2× income gap across local geography.

Median home values vary 1.9× across this county — from $104,600 in 39455 (Lumberton) to $200,100 in 39482 (Sumrall).

Density varies across the county — from 22 people/sq mi in 39455 (Lumberton) to 91 in 39475 (Purvis).

Educational attainment ranges from 14.7% bachelor's+ in 39455 (Lumberton) to 31.0% in 39475 (Purvis) — the breadth of educational profiles across the area.

Within Mississippi, this is the #21 most populous of 82 counties and ranks #17 for median household income with the #3 fastest decade growth .

Weighted by population, the typical household earns about $61,852 across the county — reflecting what a typical resident sees, not a simple ZIP average.

21.8% of adults age 25+ hold a bachelor's degree or higher (5,342 of 24,494 reporting).

3 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Lamar County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
721
square miles
Avg density
48.7
people per sq mi
Population
35,073
across 3 ZIPs
Lumberton
359.5 sq mi
7,937 residents
Sumrall
201.3 sq mi
12,606 residents
Purvis
159.9 sq mi
14,530 residents

All ZIP Codes in Lamar County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
39475PurvisStandard14,530$63,887159.925.8%
39482SumrallStandard12,606$64,321201.341.8%
39455LumbertonStandard7,937$54,206359.5-23.6%

Adjacent & Nearby Counties