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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/37699

37699

ZIP 37699 is in Piney Flats, Tennessee, in Sullivan County; area code 423; Eastern time. Piney Flats has 2 ZIP codes; the other is 37686.

Type
No street area
Time zone
America/New_York
County
Sullivan
Coordinates
36.4195, -82.3040

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 37686, whose figures describe that area — not this ZIP code.

☼ Live from 37699 — Piney Flats, TN

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Where 37699 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 37699
  • 🔢 Type 37699 into a pocket calculator and turn it upside down: GGgLE — not quite a word, sorry.
  • ➕ 37699 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 34, a total 322 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001001101000011
  • 🏠 Its numerical neighbours: 37694 (Watauga, TN, 3 mi away) and 37701 (Alcoa, TN, 103 mi away).
  • 🔄 Backwards, 37699 becomes 99673, which is not a ZIP code at all.
  • 👥 14 other ZIP codes are made of exactly the same digits (37996, 39769, 76939, 79369, 79936, 96379, …). The farthest-flung twin is 96379 in FPO AA, a military post office, 7,681 miles away.
  • 🧭 Farther south than 67% of all ZIP codes, and farther east than 65%.
  • 🎯914 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 37699 and you would come out at 36.42°S, 97.70°E — 1,081 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 39m of daylight. Shortest: 9h 40m.
🌙 The sky over 37699 today
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Source: USGS.

Land area

ZIP codes near 37699

ZIPCityDistance
37694 Watauga, TN 2.8 mi
37686 Piney Flats, TN 2.9 mi
37601 Johnson City, TN 5.7 mi
37618 Bluff City, TN 6.0 mi
37621 Bristol, TN 6.3 mi
37644 Elizabethton, TN 7.1 mi
37617 Blountville, TN 8.0 mi
37682 Milligan College, TN 8.3 mi
37615 Johnson City, TN 8.4 mi
37605 Johnson City, TN 8.4 mi

Find every ZIP code within 10 miles of 37699 →

Questions about this ZIP code

Where is ZIP code 37699?

37699 is in Piney Flats, Tennessee, in Sullivan County, part of the Kingsport-Bristol, TN-VA metropolitan area. Its published point location is 36.4195, -82.3040.

What county is 37699 in?

37699 lies in Sullivan County.

What area code is 37699?

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

What time zone is 37699 in?

37699 uses America/New_York.

What ZIP codes are near 37699?

The closest are 37694 (2.8 mi), 37686 (2.9 mi), 37601 (5.7 mi), 37618 (6 mi) and 37621 (6.3 mi).

Is 37699 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. “37699 ZIP Code — Piney Flats, Tennessee (Sullivan County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37699

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curl https://zipcodes.pro/zip/37699.json

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