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/37644

37644

ZIP 37644 is in Elizabethton, Tennessee, in Carter County; area code 423; Eastern time. Elizabethton has 2 ZIP codes; the other is 37643.

Type
No street area
Time zone
America/New_York
County
Carter
Metro area
Johnson City, TN
Coordinates
36.3487, -82.2107

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 37643, whose figures describe that area — not this ZIP code.

☼ Live from 37644 — Elizabethton, TN

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Where 37644 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 37644
  • 🔢 Type 37644 into a pocket calculator and turn it upside down: hhgLE — not quite a word, sorry.
  • ➕ As a number, 37,644 = 2 × 2 × 3 × 3137. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001001100001100
  • 🏠 Its numerical neighbours: 37643 (Elizabethton, TN, 5 mi away) and 37645 (Mount Carmel, TN, 29 mi away).
  • 🔄 Backwards, 37644 becomes 44673, which is not a ZIP code at all.
  • 👥 33 other ZIP codes are made of exactly the same digits (34476, 34674, 34746, 36474, 36744, 43467, …). The farthest-flung twin is 76443 in Cross Plains, TX, 1,013 miles away.
  • 🧭 Farther south than 67% of all ZIP codes, and farther east than 66%.
  • 🎯921 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 37644 and you would come out at 36.35°S, 97.79°E — 1,075 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 38m of daylight. Shortest: 9h 41m.
🌙 The sky over 37644 today
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🌋 Shake report
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Source: USGS.

Business and tax activity

Business establishments7This ZIP7
Employees80This ZIP80
Annual payroll$7,292,000This ZIP$7,292,000

Land area

ZIP codes near 37644

ZIPCityDistance
37694 Watauga, TN 4.5 mi
37643 Elizabethton, TN 5.1 mi
37682 Milligan College, TN 5.6 mi
37601 Johnson City, TN 6.0 mi
37658 Hampton, TN 6.9 mi
37699 Piney Flats, TN 7.1 mi
37618 Bluff City, TN 7.7 mi
37614 Johnson City, TN 9.3 mi
37684 Mountain Home, TN 9.4 mi
37605 Johnson City, TN 9.9 mi

Find every ZIP code within 10 miles of 37644 →

Questions about this ZIP code

Where is ZIP code 37644?

37644 is in Elizabethton, Tennessee, in Carter County, part of the Johnson City, TN metropolitan area. Its published point location is 36.3487, -82.2107.

What county is 37644 in?

37644 lies in Carter County.

What area code is 37644?

Elizabethton uses area code 423, from NANPA's telephone records.

What time zone is 37644 in?

37644 uses America/New_York.

What ZIP codes are near 37644?

The closest are 37694 (4.5 mi), 37643 (5.1 mi), 37682 (5.6 mi), 37601 (6 mi) and 37658 (6.9 mi).

Is 37644 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “37644 ZIP Code — Elizabethton, Tennessee (Carter County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37644

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/37644.json

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