37681
ZIP 37681 is Limestone, Tennessee, mostly in Washington County; area code 423; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Washington +1 more
- Metro area
- Johnson City, TN
- Population
- 5,723
- Coordinates
- 36.2580, -82.6206
Weather right now
Asking the National Weather Service…
Where 37681 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.
- 🔢 Type 37681 into a pocket calculator and turn it upside down: IBgLE — not quite a word, sorry.
- ➕ As a number, 37,681 = 7 × 7 × 769. Its digits add up to 25, a total 2,242 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1001001100110001 - 🏠 Its numerical neighbours: 37680 (Laurel Bloomery, TN, 54 mi away) and 37682 (Milligan College, TN, 19 mi away).
- 🔄 Backwards, 37681 becomes 18673, which is not a ZIP code at all.
- 👥 43 other ZIP codes are made of exactly the same digits (13678, 13687, 13786, 16738, 16837, 16873, …). The farthest-flung twin is 83617 in Emmett, ID, 1,853 miles away.
- 🧭 Farther south than 68% of all ZIP codes, and farther east than 64%.
- 🎯901 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 37681 and you would come out at 36.26°S, 97.38°E — 1,096 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 38m of daylight. Shortest: 9h 41m.
- 📏 At 65.2 square miles of land, 37681 is bigger than 67% of ZIP codes — room for about 50 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 5,723This ZIP5,723 |
|---|---|
| Households | 2,464This ZIP2,464 |
| Housing units | 2,835This ZIP2,835 |
| Median age | 50.2This ZIP50.2Tennessee38.9US 38.9 |
| Median household income | $65,857This ZIP$65,857Tennessee$69,595US $80,734 |
| Median home value | $177,300This ZIP$177,300Tennessee$286,700US $332,700 |
| Median gross rent | $767This ZIP$767Tennessee$1,189US $1,413 |
| Bachelor's degree or higher | 14.7%This ZIP14.7% |
| Mean commute | 35.0 minThis ZIP35.0 min |
| Population density | 87.8 / sq miThis ZIP87.8 / sq mi |
Business and tax activity
| Business establishments | 51This ZIP51 |
|---|---|
| Employees | 442This ZIP442 |
| Annual payroll | $20,761,000This ZIP$20,761,000 |
| Tax returns filed | 2,810This ZIP2,810 |
| Total adjusted gross income | $168,442,000This ZIP$168,442,000 |
Land area
| Land area | 65.20 sq miThis ZIP65.20 sq mi |
|---|---|
| Water area | 0.36 sq miThis ZIP0.36 sq mi |
Counties 37681 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Washington County | 62.5% |
| Greene County | 37.5% |
ZIP codes near 37681
| ZIP | City | Distance |
|---|---|---|
37690 | Telford, TN | 3.5 mi |
37641 | Chuckey, TN | 4.7 mi |
37659 | Jonesborough, TN | 6.6 mi |
37602 | Johnson City, TN | 6.7 mi |
37616 | Afton, TN | 7.7 mi |
37656 | Fall Branch, TN | 9.8 mi |
37745 | Greeneville, TN | 11.8 mi |
37615 | Johnson City, TN | 13.5 mi |
37604 | Johnson City, TN | 13.5 mi |
37605 | Johnson City, TN | 13.8 mi |
Find every ZIP code within 10 miles of 37681 →
Questions about this ZIP code
Where is ZIP code 37681?
37681 is in Limestone, Tennessee, in Washington County, part of the Johnson City, TN metropolitan area. Its published point location is 36.2580, -82.6206.
What county is 37681 in?
37681 spans 2 counties: Washington County and Greene County. Most of it falls in Washington 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 37681?
Limestone uses area code 423, from NANPA's telephone records.
What time zone is 37681 in?
37681 uses America/New_York.
How many people live in 37681?
About 5,723 people live in ZIP code 37681, in 2,464 households, at 87.8 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 37681?
$65,857 a year, against $69,595 across Tennessee.
What ZIP codes are near 37681?
The closest are 37690 (3.5 mi), 37641 (4.7 mi), 37659 (6.6 mi), 37602 (6.7 mi) and 37616 (7.7 mi).
Is 37681 a PO Box ZIP code?
37681 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “37681 ZIP Code — Limestone, Tennessee (Washington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37681
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/37681.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.