Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/KY/COUNTY/WASHINGTON

Washington County, KY ZIP codes

Washington County, KY has 4 ZIP codes, in 4 towns: 40069, 40078, 40040 and 40061. 1 more crosses into it from a neighbouring county: 40330.

The county seat is Springfield.

ZIP codes
4
Partly in it
1 more
Towns
4
County seat
Springfield
County FIPS
21229
Population
12,140
Median household income
$61,616
Land area
297 sq mi

Washington County ZIP codes by town

Springfield (county seat)
40069

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.

ZIP codes partly in Washington County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Washington County.

Map of Washington County ZIP codes

40040400614006940078

The ZIP codes of Washington 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.

Washington County in numbers

About 12,140 people live in Washington County, in 4,852 households, the 91st most populous of Kentucky's 120 counties. The median household income is $61,616 a year, 3% below the Kentucky median of $63,726 (US: $80,734). The median owner-occupied home is valued at $179,200 (13% below the Kentucky median), and median gross rent is $744 a month. The median age is 42.3; 19.6% of adults 25 and over hold a bachelor's degree or higher (27.6% across Kentucky); the average commute takes 22 minutes.

Population12,140Washington12,140
Households4,852Washington4,852
Median age42.3Washington42.3Kentucky39.1US 38.9
Median household income$61,616Washington$61,616Kentucky$63,726US $80,734
Median home value$179,200Washington$179,200Kentucky$205,600US $332,700
Median gross rent$744Washington$744Kentucky$967US $1,413
Bachelor's degree or higher19.6%Washington19.6%Kentucky27.6%US 35.7%
Mean commute22.4 minWashington22.4 minKentucky24.0 minUS 26.4 min
Population density41 / sq miWashington41 / 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 Washington County

Largest towns in Washington County
TownZIP codesPopulation
Springfield 1 2,899
Willisburg 1 334
Mackville 1 204
Saint Catharine 1 168

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 Washington County.

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

Every ZIP code in Washington County, with figures

ZIP codes in Washington County
ZIP City Type Population Median income Median home
40040 Mackville , KY Standard 779 — $158,600
40061 Saint Catharine , KY Standard 168 — —
40069 Springfield , KY Standard 8,015 $70,788 $194,200
40078 Willisburg , KY Standard 2,661 $54,435 $183,400

Cite this page

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

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