ZIP Codes of Amite County, MS

Population & People
Population & People
Total Population
10,671
Household Income
Household Income
Median Income
$40,536
Housing
Housing
Total Housing Units
6,214
Business & Economy
Business & Economy
Total Businesses
169
Employment
Employment
Employment Rate
43.67%
Education
Education
Bachelor's Degree+
13.57%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:601 / 769
Timezone:Central (GMT -06:00)
Local Time:11:54:05 PM
Population:10,671 [See All]
FIPS:28005
Land Area:725 sq mi
Water Area:2 sq mi
Coordinates:31.2516, -90.9226
Quick Link:
https://www.zip-codes.com/county/ms-amite.asp
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Notable population decline
Lost 11.8% of residents since 2014.
Among Mississippi's 5 oldest counties
Median age 46.3.

Standout ZIPs in this County


Most Populous
Liberty · 4,050 people
38.0% of county total
Highest Income
Smithdale · $42,500 median
1.0× county average
Largest Land Area
Liberty · 317.1 sq mi
Spans the most ground
Fastest Growth
Smithdale · 23.1% (10-yr)
2,115 → 2,603 residents
Most Educated
Smithdale · 19.0% bachelor's+
331 of 1,746 adults 25+

Things worth knowing about Amite County


10,671 residents live across 4 ZIPs covering 725 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 12,104 to 10,671 from 2014 to 2024 — a -11.8% change. 2 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 39664 (Smithdale, $42,500 median) and poorest ZIP 39638 (Gloster, $37,185) are 21.5 miles apart — a 1.1× income gap across local geography.

Median home values vary 1.9× across this county — from $59,700 in 39633 (Crosby) to $114,800 in 39645 (Liberty).

Density varies across the county — from 7 people/sq mi in 39633 (Crosby) to 24 in 39664 (Smithdale).

Educational attainment ranges from 11.3% bachelor's+ in 39645 (Liberty) to 19.0% in 39664 (Smithdale) — the breadth of educational profiles across the area.

Within Mississippi, this is the #65 most populous of 82 counties and ranks #69 for median household income .

Weighted by population, the typical household earns about $39,996 across the county — reflecting what a typical resident sees, not a simple ZIP average.

13.6% of adults age 25+ hold a bachelor's degree or higher (1,019 of 7,509 reporting).

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

Stories about Amite 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
725
square miles
Avg density
14.7
people per sq mi
Population
10,671
across 4 ZIPs
Liberty
317.1 sq mi
4,050 residents
Gloster
191.5 sq mi
3,259 residents
Crosby
108.5 sq mi
759 residents

Population decline

Amite County lost 11.8% of residents between 2014 and 2024. ZIPs that shed the largest share:

Crosby
-38.9%
1,242 → 759 residents
Liberty
-29.0%
5,704 → 4,050 residents

All ZIP Codes in Amite County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
39645LibertyStandard4,050$40,231317.1-29.0%
39638GlosterStandard3,259$37,185191.57.1%
39664SmithdaleStandard2,603$42,500107.623.1%
39633CrosbyStandard759$42,228108.5-38.9%

Adjacent & Nearby Counties