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zipcodes.pro — STATE/KY/COUNTY/MARSHALL

Marshall County, KY ZIP codes

Marshall County, KY has 4 ZIP codes, in 4 towns: 42025, 42029, 42044 and 42048.

The county seat is Benton.

ZIP codes
4
Towns
4
County seat
Benton
County FIPS
21157
Population
31,743
Median household income
$65,831
Land area
302 sq mi

Marshall County ZIP codes by town

Benton (county seat)
42025

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Marshall County ZIP codes

42025420294204442048

The ZIP codes of Marshall County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Marshall County in numbers

About 31,743 people live in Marshall County, in 13,209 households, the 32nd most populous of Kentucky's 120 counties. The median household income is $65,831 a year, 3% above the Kentucky median of $63,726 (US: $80,734). The median owner-occupied home is valued at $173,800 (15% below the Kentucky median), and median gross rent is $798 a month. The median age is 45.1; 21.2% of adults 25 and over hold a bachelor's degree or higher (27.6% across Kentucky); the average commute takes 24 minutes.

Population31,743Marshall31,743
Households13,209Marshall13,209
Median age45.1Marshall45.1Kentucky39.1US 38.9
Median household income$65,831Marshall$65,831Kentucky$63,726US $80,734
Median home value$173,800Marshall$173,800Kentucky$205,600US $332,700
Median gross rent$798Marshall$798Kentucky$967US $1,413
Bachelor's degree or higher21.2%Marshall21.2%Kentucky27.6%US 35.7%
Mean commute23.7 minMarshall23.7 minKentucky24.0 minUS 26.4 min
Population density105 / sq miMarshall105 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Marshall County

Largest towns in Marshall County
TownZIP codesPopulation
Benton 1 4,748
Calvert City 1 2,526
Hardin 1 446
Gilbertsville 1 433

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Marshall County.

Not sure you are in Marshall County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Marshall County, with figures

ZIP codes in Marshall County
ZIP City Type Population Median income Median home
42025 Benton , KY Standard 19,941 $70,067 $172,100
42029 Calvert City , KY Standard 5,552 $64,083 $154,100
42044 Gilbertsville , KY Standard 3,894 $57,333 $271,400
42048 Hardin , KY Standard 2,083 $55,714 $138,800

Cite this page

zipcodes.pro. “Marshall County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ky/county/marshall

Underlying data is public domain or openly licensed — sources, vintages and licences.