Marshall County, Kentucky
Marshall County, Kentucky, has 31,659 residents (July 2025 estimate). Its county seat is Benton. It uses Central Time and covers 302 sq mi (783 km²) of land.
- Resident population, July 2025
- 31,659
- Land area
- 302 sq mi (783 km²)
- County seat or government
- Benton
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $65,831 ± $6,084
- Median home value
- $173,800 ± $13,742
- Median rent, with utilities
- $798 ± $58
- Homes lived in by their owners
- 81.6% ± 0.9 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: Murray, KY micro area, Mayfield, KY micro area, Paducah, KY-IL metro area, and Clarksville, TN-KY metro area
- Water area
- 38 sq mi (98.5 km²)
- State
- Kentucky
- County code (FIPS)
- 21157
- Coordinates (central point)
- 36.882017, -88.332752
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Marshall County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 4206623,917 people
- 4202519,941 people
- 420295,552 people
- 420443,894 people
- 420482,083 people
- 420821,803 people
- 420361,194 people
- 42054837 people
8 ZIP Code areas overlap Marshall County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Marshall County, largest first
- Marshall County School District31,743 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Benton, Kentucky (city)4,748 people
- Calvert City, Kentucky (city)2,526 people
- Hardin, Kentucky (city)446 people
- Gilbertsville, Kentucky (CDP)433 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Lyon County, Kentucky17 mi northeast
- Calloway County, Kentucky18 mi south
- Graves County, Kentucky21 mi southwest
- Livingston County, Kentucky23 mi north
- McCracken County, Kentucky24 mi northwest
- Trigg County, Kentucky27 mi east
Before using this answer on a form
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