37881
ZIP 37881 is Thorn Hill, Tennessee, mostly in Grainger County; area code 865; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Grainger +3 more
- Metro area
- Knoxville, TN
- Population
- 1,677
- Coordinates
- 36.3981, -83.3625
Weather right now
Asking the National Weather Service…
Where 37881 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 37881 into a pocket calculator and turn it upside down: IBBLE — not quite a word, sorry.
- ➕ As a number, 37,881 = 3 × 3 × 3 × 23 × 61. Its digits add up to 27, a total 1,806 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1001001111111001 - 🏠 Its numerical neighbours: 37880 (Ten Mile, TN, 87 mi away) and 37882 (Townsend, TN, 60 mi away).
- 🔄 Backwards, 37881 becomes 18873, which is not a ZIP code at all.
- 👥 14 other ZIP codes are made of exactly the same digits (13788, 17883, 18837, 31788, 37188, 37818, …). The farthest-flung twin is 83871 in Troy, ID, 1,850 miles away.
- 🧭 Farther south than 67% of all ZIP codes, and farther east than 62%.
- 🎯859 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 37881 and you would come out at 36.40°S, 96.64°E — 1,139 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 39m of daylight. Shortest: 9h 40m.
- 📏 At 71.9 square miles of land, 37881 is bigger than 69% of ZIP codes — room for about 55 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,677This ZIP1,677 |
|---|---|
| Households | 739This ZIP739 |
| Housing units | 1,106This ZIP1,106 |
| Median age | 56.7This ZIP56.7Tennessee38.9US 38.9 |
| Median household income | $37,443This ZIP$37,443Tennessee$69,595US $80,734 |
| Median home value | $111,900This ZIP$111,900Tennessee$286,700US $332,700 |
| Median gross rent | $699This ZIP$699Tennessee$1,189US $1,413 |
| Bachelor's degree or higher | 8.5%This ZIP8.5% |
| Mean commute | 38.6 minThis ZIP38.6 min |
| Population density | 23.3 / sq miThis ZIP23.3 / sq mi |
Business and tax activity
| Business establishments | 18This ZIP18 |
|---|---|
| Employees | 197This ZIP197 |
| Annual payroll | $8,801,000This ZIP$8,801,000 |
| Tax returns filed | 890This ZIP890 |
| Total adjusted gross income | $47,634,000This ZIP$47,634,000 |
Land area
| Land area | 71.86 sq miThis ZIP71.86 sq mi |
|---|---|
| Water area | 1.02 sq miThis ZIP1.02 sq mi |
Counties 37881 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Grainger County | 56.1% |
| Hancock County | 36.3% |
| Hawkins County | 7.1% |
| Claiborne County | 0.5% |
ZIP codes near 37881
| ZIP | City | Distance |
|---|---|---|
37708 | Bean Station, TN | 5.3 mi |
37811 | Mooresburg, TN | 9.1 mi |
37879 | Tazewell, TN | 9.9 mi |
37869 | Sneedville, TN | 10.4 mi |
37814 | Morristown, TN | 11.5 mi |
37773 | Lone Mountain, TN | 12.4 mi |
37888 | Washburn, TN | 12.9 mi |
37824 | New Tazewell, TN | 13.2 mi |
37778 | Lowland, TN | 13.7 mi |
37815 | Morristown, TN | 13.7 mi |
Find every ZIP code within 10 miles of 37881 →
Questions about this ZIP code
Where is ZIP code 37881?
37881 is in Thorn Hill, Tennessee, in Grainger County, part of the Knoxville, TN metropolitan area. Its published point location is 36.3981, -83.3625.
What county is 37881 in?
37881 spans 4 counties: Grainger County, Hancock County, Hawkins County and Claiborne County. Most of it falls in Grainger 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 37881?
Thorn Hill uses area code 865, from NANPA's telephone records.
What time zone is 37881 in?
37881 uses America/New_York.
How many people live in 37881?
About 1,677 people live in ZIP code 37881, in 739 households, at 23.3 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 37881?
$37,443 a year, against $69,595 across Tennessee.
What ZIP codes are near 37881?
The closest are 37708 (5.3 mi), 37811 (9.1 mi), 37879 (9.9 mi), 37869 (10.4 mi) and 37814 (11.5 mi).
Is 37881 a PO Box ZIP code?
37881 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “37881 ZIP Code — Thorn Hill, Tennessee (Grainger County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37881
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/37881.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.