37742
ZIP 37742 is Greenback, Tennessee, mostly in Loudon County; area code 865; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Loudon +1 more
- Metro area
- Knoxville, TN
- Population
- 7,046
- Coordinates
- 35.6758, -84.1792
Weather right now
Asking the National Weather Service…
Where 37742 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 37742 into a pocket calculator and turn it upside down: ZhLLE — not quite a word, sorry.
- ➕ As a number, 37,742 = 2 × 113 × 167. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1001001101101110 - 🏠 Its numerical neighbours: 37738 (Gatlinburg, TN, 39 mi away) and 37743 (Greeneville, TN, 79 mi away).
- 🔄 Backwards, 37742 becomes 24773, which is not a ZIP code at all.
- 👥 27 other ZIP codes are made of exactly the same digits (24377, 24737, 27374, 32747, 32774, 34277, …). The farthest-flung twin is 77432 in Danevang, TX, 839 miles away.
- 🧭 Farther south than 71% of all ZIP codes, and farther east than 59%.
- 🎯836 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 37742 and you would come out at 35.68°S, 95.82°E — 1,177 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 35m of daylight. Shortest: 9h 44m.
- 📏 At 49.4 square miles of land, 37742 is bigger than 59% of ZIP codes — room for about 38 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 7,046This ZIP7,046 |
|---|---|
| Households | 2,662This ZIP2,662 |
| Housing units | 2,877This ZIP2,877 |
| Median age | 42.2This ZIP42.2Tennessee38.9US 38.9 |
| Median household income | $88,983This ZIP$88,983Tennessee$69,595US $80,734 |
| Median home value | $301,800This ZIP$301,800Tennessee$286,700US $332,700 |
| Median gross rent | $1,054This ZIP$1,054Tennessee$1,189US $1,413 |
| Bachelor's degree or higher | 15.2%This ZIP15.2% |
| Mean commute | 30.1 minThis ZIP30.1 min |
| Population density | 142.6 / sq miThis ZIP142.6 / sq mi |
Business and tax activity
| Business establishments | 52This ZIP52 |
|---|---|
| Employees | 281This ZIP281 |
| Annual payroll | $9,604,000This ZIP$9,604,000 |
| Tax returns filed | 3,060This ZIP3,060 |
| Total adjusted gross income | $242,576,000This ZIP$242,576,000 |
Land area
| Land area | 49.41 sq miThis ZIP49.41 sq mi |
|---|---|
| Water area | 2.88 sq miThis ZIP2.88 sq mi |
Counties 37742 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Loudon County | 67.6% |
| Blount County | 32.4% |
Other place names in 37742
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 37742
| ZIP | City | Distance |
|---|---|---|
37801 | Maryville, TN | 5.6 mi |
37737 | Friendsville, TN | 6.8 mi |
37772 | Lenoir City, TN | 8.3 mi |
37774 | Loudon, TN | 10.7 mi |
37803 | Maryville, TN | 11.2 mi |
37777 | Louisville, TN | 12.4 mi |
37878 | Tallassee, TN | 12.4 mi |
37885 | Vonore, TN | 12.4 mi |
37802 | Maryville, TN | 13.0 mi |
37701 | Alcoa, TN | 13.4 mi |
Find every ZIP code within 10 miles of 37742 →
Questions about this ZIP code
Where is ZIP code 37742?
37742 is in Greenback, Tennessee, in Loudon County, part of the Knoxville, TN metropolitan area. Its published point location is 35.6758, -84.1792.
What county is 37742 in?
37742 spans 2 counties: Loudon County and Blount County. Most of it falls in Loudon 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 37742?
Greenback uses area code 865, from NANPA's telephone records.
What time zone is 37742 in?
37742 uses America/New_York.
How many people live in 37742?
About 7,046 people live in ZIP code 37742, in 2,662 households, at 142.6 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 37742?
$88,983 a year, against $69,595 across Tennessee.
What ZIP codes are near 37742?
The closest are 37801 (5.6 mi), 37737 (6.8 mi), 37772 (8.3 mi), 37774 (10.7 mi) and 37803 (11.2 mi).
Is 37742 a PO Box ZIP code?
37742 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “37742 ZIP Code — Greenback, Tennessee (Loudon County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37742
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/37742.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.