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/42440

42440

ZIP 42440 is Mortons Gap, Kentucky, in Hopkins County; area code 270; Central time.

Type
Standard
Time zone
America/Chicago
County
Hopkins
Metro area
Madisonville, KY
Population
650
Coordinates
37.2387, -87.4700
☼ Live from 42440 — Mortons Gap, KY

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 42440 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 42440
  • 🔢 Type 42440 into a pocket calculator and turn it upside down: OhhZh — not quite a word, sorry.
  • ➕ As a number, 42,440 = 2 × 2 × 2 × 5 × 1061. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1010010111001000
  • 🏠 Its numerical neighbours: 42437 (Morganfield, KY, 37 mi away) and 42441 (Nebo, KY, 13 mi away).
  • 🔄 Backwards, 42440 becomes 04424 — and that is a real ZIP code: Danforth, ME, 1,166 miles away.
  • 👥 11 other ZIP codes are made of exactly the same digits (04424, 04442, 20444, 24440, 40442, 42044, …). The farthest-flung twin is 04424 in Danforth, ME, 1,166 miles away.
  • 🧭 Farther south than 63% of all ZIP codes, and farther east than 50%.
  • 🎯626 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 42440 and you would come out at 37.24°S, 92.53°E — 1,372 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 44m of daylight. Shortest: 9h 36m.
  • 📏 At 1.4 square miles of land, 42440 is bigger than 10% of ZIP codes — room for about 1.1 Central Parks.
🌙 The sky over 42440 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population650This ZIP650
Households273This ZIP273
Housing units327This ZIP327
Median age46.7This ZIP46.7Kentucky39.1US 38.9
Median home value$96,800This ZIP$96,800Kentucky$205,600US $332,700
Median gross rent$675This ZIP$675Kentucky$967US $1,413
Bachelor's degree or higher5.8%This ZIP5.8%
Mean commute17.9 minThis ZIP17.9 min
Population density460.0 / sq miThis ZIP460.0 / sq mi

Business and tax activity

Business establishments10This ZIP10
Employees133This ZIP133
Annual payroll$9,470,000This ZIP$9,470,000

Land area

Land area1.41 sq miThis ZIP1.41 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 42440

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

ZIP codes near 42440

ZIPCityDistance
42410 Earlington, KY 3.4 mi
42442 Nortonville, KY 4.1 mi
42431 Madisonville, KY 6.8 mi
42464 White Plains, KY 7.4 mi
42453 Saint Charles, KY 8.7 mi
42344 Graham, KY 8.7 mi
42325 Bremen, KY 12.3 mi
42408 Dawson Springs, KY 12.9 mi
42217 Crofton, KY 13.3 mi
42436 Manitou, KY 13.3 mi

Find every ZIP code within 10 miles of 42440 →

Questions about this ZIP code

Where is ZIP code 42440?

42440 is in Mortons Gap, Kentucky, in Hopkins County, part of the Madisonville, KY micropolitan area. Its published point location is 37.2387, -87.4700.

What county is 42440 in?

42440 lies in Hopkins County.

What area code is 42440?

Mortons Gap uses area code 270, from NANPA's telephone records.

What time zone is 42440 in?

42440 uses America/Chicago.

How many people live in 42440?

About 650 people live in ZIP code 42440, in 273 households, at 460.0 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What ZIP codes are near 42440?

The closest are 42410 (3.4 mi), 42442 (4.1 mi), 42431 (6.8 mi), 42464 (7.4 mi) and 42453 (8.7 mi).

Is 42440 a PO Box ZIP code?

42440 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “42440 ZIP Code — Mortons Gap, Kentucky (Hopkins County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/42440

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/42440.json

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