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

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/40059

40059

ZIP 40059 is Prospect, Kentucky, mostly in Oldham County; area code 502; Eastern time.

Type
Standard
Time zone
America/New_York
County
Oldham +1 more
Population
20,892
Coordinates
38.3556, -85.5820
☼ Live from 40059 — Prospect, KY

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 40059 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 40059
  • 🔢 Type 40059 into a pocket calculator and turn it upside down: GSOOh — not quite a word, sorry.
  • ➕ As a number, 40,059 = 3 × 3 × 4451. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001110001111011
  • 🏠 Its numerical neighbours: 40058 (Port Royal, KY, 23 mi away) and 40060 (Raywick, KY, 57 mi away).
  • 🔄 Backwards, 40059 becomes 95004 — and that is a real ZIP code: Aromas, CA, 1,963 miles away.
  • 👥 22 other ZIP codes are made of exactly the same digits (00954, 04095, 04950, 05049, 05490, 05904, …). The farthest-flung twin is 09054 in APO AE, a military post office, 4,408 miles away.
  • 🧭 Farther south than 56% of all ZIP codes, and farther east than 55%.
  • 🎯704 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 40059 and you would come out at 38.36°S, 94.42°E — 1,286 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 50m of daylight. Shortest: 9h 29m.
  • 📏 At 28.2 square miles of land, 40059 is bigger than 44% of ZIP codes — room for about 21 Central Parks.
🌙 The sky over 40059 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population20,892This ZIP20,892
Households8,250This ZIP8,250
Housing units8,840This ZIP8,840
Median age47.2This ZIP47.2Kentucky39.1US 38.9
Median household income$152,727This ZIP$152,727Kentucky$63,726US $80,734
Median home value$559,300This ZIP$559,300Kentucky$205,600US $332,700
Median gross rent$2,006This ZIP$2,006Kentucky$967US $1,413
Bachelor's degree or higher70.1%This ZIP70.1%
Mean commute26.4 minThis ZIP26.4 min
Population density740.7 / sq miThis ZIP740.7 / sq mi

Business and tax activity

Business establishments537This ZIP537
Employees3,862This ZIP3,862
Annual payroll$190,294,000This ZIP$190,294,000
Tax returns filed10,200This ZIP10,200
Total adjusted gross income$2,348,322,000This ZIP$2,348,322,000

Land area

Land area28.21 sq miThis ZIP28.21 sq mi
Water area0.57 sq miThis ZIP0.57 sq mi

Counties 40059 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Oldham County 60.7%
Jefferson County 39.3%

Other place names in 40059

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 40059

ZIPCityDistance
40027 Harrods Creek, KY 3.3 mi
40241 Louisville, KY 3.9 mi
40025 Glenview, KY 5.3 mi
40242 Louisville, KY 5.5 mi
40026 Goshen, KY 5.7 mi
40056 Pewee Valley, KY 6.1 mi
47130 Jeffersonville, IN 6.4 mi
40222 Louisville, KY 6.5 mi
40010 Buckner, KY 6.7 mi
40223 Louisville, KY 7.1 mi

Find every ZIP code within 10 miles of 40059 →

Questions about this ZIP code

Where is ZIP code 40059?

40059 is in Prospect, Kentucky, in Oldham County, part of the Louisville/Jefferson County, KY-IN metropolitan area. Its published point location is 38.3556, -85.5820.

What county is 40059 in?

40059 spans 2 counties: Oldham County and Jefferson County. Most of it falls in Oldham County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 40059?

Prospect uses area code 502, from NANPA's telephone records.

What time zone is 40059 in?

40059 uses America/New_York.

How many people live in 40059?

About 20,892 people live in ZIP code 40059, in 8,250 households, at 740.7 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 40059?

$152,727 a year, against $63,726 across Kentucky.

What ZIP codes are near 40059?

The closest are 40027 (3.3 mi), 40241 (3.9 mi), 40025 (5.3 mi), 40242 (5.5 mi) and 40026 (5.7 mi).

Is 40059 a PO Box ZIP code?

40059 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “40059 ZIP Code — Prospect, Kentucky (Oldham County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/40059

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/40059.json

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