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Marshall County, KY
4 cities and towns and 4 ZIP codes in Marshall County, Kentucky.
Population
31,743
Land area
302sq mi
People per sq mi
105
ZIP codes
4
Cities and towns in Marshall County
Marshall County at a glance
- The median household income is $65,831, 3% above the Kentucky median of $63,726.
- A typical owner-occupied home is valued at $173,800 (15% below Kentucky) and median rent is $798 a month.
- Its largest cities are Benton (4,748), Calvert City (2,526) and Hardin (446).
Local data for Marshall County, KY
Counts from official public data
Housing and community stats
Marshall County, KY, American Community Survey 2020-2024
Median household income
$65,831
Poverty rate
12.3%
Median home value
$173,800
Prices +8.3% in a year
Median rent
$798/mo
Homeownership
81.6%
Bachelor's or higher
21.2%
Median age
45.1
Average commute
23.7 min
Largest reported origins and ancestries: Irish Americans (3,841), German Americans (2,528), Polish Americans (736).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
4.8%
Sep 2026, +0.1 pts in a year
Average annual pay
$62,320
11,471 jobs, 2025
Income per person
$56,075
BEA, 2024
Federal spending
$256M
FY 2026, $8,092 per person
PPP loans
$67.5M
862 loans, 7,432 jobs reported
Campaign donations
$133K
Itemized, 2026 cycle
How people get to work
Marshall County, KY, workers 16 and older. American Community Survey 5-year estimates
- Drove alone78.2%
- Carpooled10.3%
- Public transit0.1%
- Walked1.6%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other1.9%
- Worked from home7.9%
Average one-way commute: 23.7 minutes for people who do not work from home.
Environment and hazard risk
Marshall County, KY, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: earthquake
Storm events since 1996
787
Most often thunderstorm wind
Flood insurance policies
72
0.6% of homes, county
July high / Jan low
90° / 23°F
Hazards, floods and storm historyCheck a flood zone3 historic places
Cities, towns and ZIP codes in Marshall County
Population shown
Frequently asked questions
- What is the largest city in Marshall County, KY?
- Benton is the largest city or town in Marshall County, with about 4,748 residents.
- How many ZIP codes are in Marshall County?
- Marshall County includes 4 ZIP Code Tabulation Areas, including 42025, 42029, 42044, 42048.
- What is the population of Marshall County, KY?
- About 31,743 people live in Marshall County, based on American Community Survey 5-year estimates.
- What counties border Marshall County?
- Marshall County borders McCracken County, Calloway County, Graves County, Trigg County, Livingston County, Lyon County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023