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zipcodes.pro — STATE/KY/COUNTY/UNION

Union County, KY ZIP codes

Union County, KY has 5 ZIP codes, in 5 towns: 42437, 42459, 42461, 42462 and 42460.

The county seat is Morganfield.

ZIP codes
5
Towns
5
County seat
Morganfield
County FIPS
21225
Population
13,260
Median household income
$60,327
Land area
343 sq mi

Union County ZIP codes by town

Morganfield (county seat)
42437

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 Union County ZIP codes

4243742459424604246142462

The ZIP codes of Union 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.

Union County in numbers

About 13,260 people live in Union County, in 5,198 households, the 81st most populous of Kentucky's 120 counties. The median household income is $60,327 a year, 5% below the Kentucky median of $63,726 (US: $80,734). The median owner-occupied home is valued at $104,500 (49% below the Kentucky median), and median gross rent is $790 a month. The median age is 42.4; 13.1% of adults 25 and over hold a bachelor's degree or higher (27.6% across Kentucky); the average commute takes 22 minutes.

Population13,260Union13,260
Households5,198Union5,198
Median age42.4Union42.4Kentucky39.1US 38.9
Median household income$60,327Union$60,327Kentucky$63,726US $80,734
Median home value$104,500Union$104,500Kentucky$205,600US $332,700
Median gross rent$790Union$790Kentucky$967US $1,413
Bachelor's degree or higher13.1%Union13.1%Kentucky27.6%US 35.7%
Mean commute22.1 minUnion22.1 minKentucky24.0 minUS 26.4 min
Population density39 / sq miUnion39 / 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 Union County

Largest towns in Union County
TownZIP codesPopulation
Morganfield 1 3,185
Sturgis 1 1,864
Uniontown 1 874
Waverly 1 403

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 Union County.

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

Every ZIP code in Union County, with figures

ZIP codes in Union County
ZIP City Type Population Median income Median home
42437 Morganfield , KY Standard 7,064 $65,256 $109,800
42459 Sturgis , KY Standard 3,903 $51,563 $96,600
42460 Sullivan , KY No street area — — —
42461 Uniontown , KY Standard 1,285 $47,746 $104,000
42462 Waverly , KY Standard 1,546 $66,373 $137,300

Cite this page

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

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