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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/40115

40115

ZIP 40115 is Custer, Kentucky, in Breckinridge County; area codes 270 and 364; Central time.

Type
Standard
Time zone
America/Chicago
County
Breckinridge
Metro area
none
Population
1,012
Coordinates
37.7503, -86.2301
☼ Live from 40115 — Custer, KY

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Local time: —

Where 40115 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 40115
  • 🔢 Type 40115 into a pocket calculator and turn it upside down: SIIOh — not quite a word, sorry.
  • ➕ As a number, 40,115 = 5 × 71 × 113. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001110010110011
  • 🏠 Its numerical neighbours: 40111 (Cloverport, KY, 21 mi away) and 40117 (Ekron, KY, 12 mi away).
  • 🔄 Backwards, 40115 becomes 51104 — and that is a real ZIP code: Sioux City, IA, 630 miles away.
  • 👥 33 other ZIP codes are made of exactly the same digits (01451, 01541, 05141, 10154, 10451, 10514, …). The farthest-flung twin is 01451 in Harvard, MA, 840 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther east than 53%.
  • 🎯680 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 40115 and you would come out at 37.75°S, 93.77°E — 1,311 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 47m of daylight. Shortest: 9h 33m.
  • 📏 At 17.8 square miles of land, 40115 is bigger than 35% of ZIP codes — room for about 14 Central Parks.
🌙 The sky over 40115 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,012This ZIP1,012
Households302This ZIP302
Housing units365This ZIP365
Median age39.4This ZIP39.4Kentucky39.1US 38.9
Median household income$74,722This ZIP$74,722Kentucky$63,726US $80,734
Median home value$149,100This ZIP$149,100Kentucky$205,600US $332,700
Bachelor's degree or higher3.9%This ZIP3.9%
Mean commute62.6 minThis ZIP62.6 min
Population density56.8 / sq miThis ZIP56.8 / sq mi

Business and tax activity

Business establishments6This ZIP6
Employees22This ZIP22
Annual payroll$714,000This ZIP$714,000
Tax returns filed300This ZIP300
Total adjusted gross income$16,091,000This ZIP$16,091,000

Land area

Land area17.83 sq miThis ZIP17.83 sq mi
Water area0.06 sq miThis ZIP0.06 sq mi

ZIP codes near 40115

ZIPCityDistance
40140 Garfield, KY 3.3 mi
40146 Irvington, KY 7.4 mi
40145 Hudson, KY 8.1 mi
40144 Harned, KY 8.4 mi
40175 Vine Grove, KY 9.0 mi
40142 Guston, KY 10.0 mi
42724 Cecilia, KY 10.1 mi
40162 Rineyville, KY 10.4 mi
40153 Mc Quady, KY 10.7 mi
40178 Westview, KY 11.5 mi

Find every ZIP code within 10 miles of 40115 →

Questions about this ZIP code

Where is ZIP code 40115?

40115 is in Custer, Kentucky, in Breckinridge County. Its published point location is 37.7503, -86.2301.

What county is 40115 in?

40115 lies in Breckinridge County.

What area code is 40115?

Custer uses area codes 270 and 364, from NANPA's telephone records.

What time zone is 40115 in?

40115 uses America/Chicago.

How many people live in 40115?

About 1,012 people live in ZIP code 40115, in 302 households, at 56.8 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 40115?

$74,722 a year, against $63,726 across Kentucky.

What ZIP codes are near 40115?

The closest are 40140 (3.3 mi), 40146 (7.4 mi), 40145 (8.1 mi), 40144 (8.4 mi) and 40175 (9 mi).

Is 40115 a PO Box ZIP code?

40115 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “40115 ZIP Code — Custer, Kentucky (Breckinridge County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/40115

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