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zipcodes.pro — STATE/KY/COUNTY/JESSAMINE

Jessamine County, KY ZIP codes

Jessamine County, KY has 4 ZIP codes, in 3 towns: 40356, 40390, 40339 and 40340.

The county seat is Nicholasville.

ZIP codes
4
Towns
3
County seat
Nicholasville
County FIPS
21113
Population
54,588
Median household income
$74,576
Land area
172 sq mi
Area code
859

Jessamine County ZIP codes by town

Nicholasville (county seat)
40340, 40356

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 Jessamine County ZIP codes

40339403404035640390

The ZIP codes of Jessamine 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.

Jessamine County in numbers

About 54,588 people live in Jessamine County, in 19,913 households, the 18th most populous of Kentucky's 120 counties. The median household income is $74,576 a year, 17% above the Kentucky median of $63,726 (US: $80,734). The median owner-occupied home is valued at $268,100 (30% above the Kentucky median), and median gross rent is $1,124 a month. The median age is 38.7; 33.5% of adults 25 and over hold a bachelor's degree or higher (27.6% across Kentucky); the average commute takes 24 minutes.

Population54,588Jessamine54,588
Households19,913Jessamine19,913
Median age38.7Jessamine38.7Kentucky39.1US 38.9
Median household income$74,576Jessamine$74,576Kentucky$63,726US $80,734
Median home value$268,100Jessamine$268,100Kentucky$205,600US $332,700
Median gross rent$1,124Jessamine$1,124Kentucky$967US $1,413
Bachelor's degree or higher33.5%Jessamine33.5%Kentucky27.6%US 35.7%
Mean commute23.8 minJessamine23.8 minKentucky24.0 minUS 26.4 min
Population density317 / sq miJessamine317 / 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 Jessamine County

Largest towns in Jessamine County
TownZIP codesPopulation
Nicholasville 2 32,197
Wilmore 1 6,057
Keene 1 346

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 Jessamine County.

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

Every ZIP code in Jessamine County, with figures

ZIP codes in Jessamine County
ZIP City Type Population Median income Median home
40339 Keene , KY Standard 346 $130,625 $115,300
40340 Nicholasville , KY No street area — — —
40356 Nicholasville , KY Standard 45,849 $74,495 $268,100
40390 Wilmore , KY Standard 7,429 $73,767 $245,900

Cite this page

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

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