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/37621

37621

ZIP 37621 is in Bristol, Tennessee, in Sullivan County; area code 423; Eastern time. Bristol has 3 ZIP codes; the others are 37620 and 37625.

Type
No street area
Time zone
America/New_York
County
Sullivan
Coordinates
36.5042, -82.2645

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 37618, whose figures describe that area — not this ZIP code.

☼ Live from 37621 — Bristol, TN

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Local time: —

Where 37621 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 37621
  • 🔢 Type 37621 into a pocket calculator and turn it upside down: IZgLE — not quite a word, sorry.
  • ➕ As a number, 37,621 = 17 × 2213. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001001011110101
  • 🏠 Its numerical neighbours: 37620 (Bristol, TN, 10 mi away) and 37625 (Bristol, TN, 8 mi away).
  • 🔄 Backwards, 37621 becomes 12673, which is not a ZIP code at all.
  • 👥 46 other ZIP codes are made of exactly the same digits (12736, 12763, 13627, 13672, 13762, 16327, …). The farthest-flung twin is 76123 in Fort Worth, TX, 901 miles away.
  • 🧭 Farther south than 66% of all ZIP codes, and farther east than 66%.
  • 🎯914 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 37621 and you would come out at 36.50°S, 97.74°E — 1,080 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 37621 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments22This ZIP22
Employees1,745This ZIP1,745
Annual payroll$110,594,000This ZIP$110,594,000

Land area

ZIP codes near 37621

ZIPCityDistance
37618 Bluff City, TN 4.3 mi
37617 Blountville, TN 5.8 mi
37699 Piney Flats, TN 6.3 mi
37686 Piney Flats, TN 6.4 mi
37625 Bristol, TN 7.6 mi
24203 Bristol, VA 7.6 mi
24209 Bristol, VA 7.6 mi
24205 Bristol, VA 7.8 mi
37694 Watauga, TN 8.4 mi
24201 Bristol, VA 9.1 mi

Find every ZIP code within 10 miles of 37621 →

Questions about this ZIP code

Where is ZIP code 37621?

37621 is in Bristol, Tennessee, in Sullivan County, part of the Kingsport-Bristol, TN-VA metropolitan area. Its published point location is 36.5042, -82.2645.

What county is 37621 in?

37621 lies in Sullivan County.

What area code is 37621?

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

What time zone is 37621 in?

37621 uses America/New_York.

What ZIP codes are near 37621?

The closest are 37618 (4.3 mi), 37617 (5.8 mi), 37699 (6.3 mi), 37686 (6.4 mi) and 37625 (7.6 mi).

Is 37621 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.

Download or cite

Cite this page

zipcodes.pro. “37621 ZIP Code — Bristol, Tennessee (Sullivan County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37621

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/37621.json

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