ZIP Codes of Chickasaw County, MS

Population & People
Population & People
Total Population
18,691
Household Income
Household Income
Median Income
$47,594
Housing
Housing
Total Housing Units
8,557
Business & Economy
Business & Economy
Total Businesses
330
Employment
Employment
Employment Rate
50.93%
Education
Education
Bachelor's Degree+
11.84%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:6 ZIP Codes (4 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:662
Timezone:Central (GMT -06:00)
Local Time:2:12:47 PM
Population:18,691 [See All]
FIPS:28017
Land Area:591 sq mi
Water Area:3 sq mi
Coordinates:33.9239, -88.9271
Quick Link:
https://www.zip-codes.com/county/ms-chickasaw.asp
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Mississippi's #49 most populous county
18,691 residents across 6 ZIPs — #49 of 82 Mississippi counties.

Standout ZIPs in this County


Most Populous
Houston · 8,802 people
47.1% of county total
Highest Income
Houlka · $52,807 median
1.1× county average
Largest Land Area
Houston · 218.7 sq mi
Spans the most ground
Fastest Growth
Houston · 3.1% (10-yr)
8,540 → 8,802 residents
Most Educated
Houston · 15.6% bachelor's+
908 of 5,827 adults 25+

Things worth knowing about Chickasaw County


18,691 residents live across 6 ZIPs covering 591 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 18,322 to 18,691 from 2014 to 2024 — a +2.0% change. 3 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 38850 (Houlka, $52,807 median) and poorest ZIP 38860 (Okolona, $41,293) are 16.9 miles apart — a 1.3× income gap across local geography.

Median home values vary 1.7× across this county — from $84,700 in 38850 (Houlka) to $142,900 in 38851 (Houston).

Density varies across the county — from 18 people/sq mi in 39776 (Woodland) to 40 in 38851 (Houston).

Educational attainment ranges from 4.7% bachelor's+ in 39776 (Woodland) to 15.6% in 38851 (Houston) — the breadth of educational profiles across the area.

Within Mississippi, this is the #49 most populous of 82 counties and ranks #52 for median household income .

Weighted by population, the typical household earns about $45,828 across the county — reflecting what a typical resident sees, not a simple ZIP average.

11.8% of adults age 25+ hold a bachelor's degree or higher (1,481 of 12,504 reporting).

4 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Chickasaw 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
591
square miles
Avg density
31.6
people per sq mi
Population
18,691
across 6 ZIPs
Houston
218.7 sq mi
8,802 residents
Houlka
149.0 sq mi
2,972 residents
Okolona
138.7 sq mi
5,388 residents

All ZIP Codes in Chickasaw County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
38851HoustonStandard8,802$45,365218.73.1%
38860OkolonaStandard5,388$41,293138.71.4%
38850HoulkaStandard2,972$52,807149.02.9%
39776WoodlandStandard1,529$50,90985.0-3.3%
38875TreblocPO Box0.0
38877Van VleetPO Box0.0

Adjacent & Nearby Counties