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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/40734

40734

ZIP 40734 is Gray, Kentucky, mostly in Knox County; area code 606; Eastern time.

Type
Standard
Time zone
America/New_York
County
Knox +1 more
Metro area
Corbin, KY
Population
3,602
Coordinates
36.9299, -83.9750
☼ Live from 40734 — Gray, KY

Weather right now

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Local time: —

Where 40734 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 40734
  • 🔢 Type 40734 into a pocket calculator and turn it upside down: hELOh — not quite a word, sorry.
  • ➕ As a number, 40,734 = 2 × 3 × 3 × 31 × 73. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001111100011110
  • 🏠 Its numerical neighbours: 40730 (Emlyn, KY, 18 mi away) and 40737 (Keavy, KY, 11 mi away).
  • 🔄 Backwards, 40734 becomes 43704, which is not a ZIP code at all.
  • 👥 39 other ZIP codes are made of exactly the same digits (03447, 04347, 04473, 04734, 04743, 30447, …). The farthest-flung twin is 04734 in Blaine, ME, 1,056 miles away.
  • 🧭 Farther south than 65% of all ZIP codes, and farther east than 60%.
  • 🎯815 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 40734 and you would come out at 36.93°S, 96.02°E — 1,179 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 42m of daylight. Shortest: 9h 37m.
  • 📏 At 45.4 square miles of land, 40734 is bigger than 57% of ZIP codes — room for about 34 Central Parks.
🌙 The sky over 40734 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population3,602This ZIP3,602
Households1,300This ZIP1,300
Housing units1,521This ZIP1,521
Median age42.3This ZIP42.3Kentucky39.1US 38.9
Median household income$42,500This ZIP$42,500Kentucky$63,726US $80,734
Median home value$131,700This ZIP$131,700Kentucky$205,600US $332,700
Median gross rent$697This ZIP$697Kentucky$967US $1,413
Bachelor's degree or higher7.7%This ZIP7.7%
Mean commute21.4 minThis ZIP21.4 min
Population density79.3 / sq miThis ZIP79.3 / sq mi

Business and tax activity

Business establishments27This ZIP27
Employees611This ZIP611
Annual payroll$32,032,000This ZIP$32,032,000
Tax returns filed1,400This ZIP1,400
Total adjusted gross income$63,936,000This ZIP$63,936,000

Land area

Land area45.43 sq miThis ZIP45.43 sq mi
Water area0.10 sq miThis ZIP0.10 sq mi

Counties 40734 spans

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

CountyShare of this ZIP
Knox County 95.6%
Laurel County 4.4%

ZIP codes near 40734

ZIPCityDistance
40771 Woodbine, KY 5.8 mi
40906 Barbourville, KY 6.2 mi
40949 Heidrick, KY 6.2 mi
40702 Corbin, KY 7.1 mi
40740 Lily, KY 7.1 mi
40923 Cannon, KY 7.2 mi
40943 Girdler, KY 7.3 mi
40946 Green Road, KY 8.5 mi
40759 Rockholds, KY 9.3 mi
40915 Bimble, KY 9.4 mi

Find every ZIP code within 10 miles of 40734 →

Questions about this ZIP code

Where is ZIP code 40734?

40734 is in Gray, Kentucky, in Knox County, part of the Corbin, KY micropolitan area. Its published point location is 36.9299, -83.9750.

What county is 40734 in?

40734 spans 2 counties: Knox County and Laurel County. Most of it falls in Knox 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 40734?

Gray uses area code 606, from NANPA's telephone records.

What time zone is 40734 in?

40734 uses America/New_York.

How many people live in 40734?

About 3,602 people live in ZIP code 40734, in 1,300 households, at 79.3 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 40734?

$42,500 a year, against $63,726 across Kentucky.

What ZIP codes are near 40734?

The closest are 40771 (5.8 mi), 40906 (6.2 mi), 40949 (6.2 mi), 40702 (7.1 mi) and 40740 (7.1 mi).

Is 40734 a PO Box ZIP code?

40734 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “40734 ZIP Code — Gray, Kentucky (Knox County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/40734

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