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Where 37221 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 37221 into a pocket calculator and turn it upside down: IZZLE — not quite a word, sorry.
- ➕ As a number, 37,221 = 3 × 19 × 653. Its digits add up to 15, a total 1,657 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1001000101100101 - 🏠 Its numerical neighbours: 37220 (Nashville, TN, 10 mi away) and 37222 (Nashville, TN, 13 mi away).
- 🔄 Backwards, 37221 becomes 12273, which is not a ZIP code at all.
- 👥 31 other ZIP codes are made of exactly the same digits (12237, 12723, 12732, 17223, 17232, 17322, …). The farthest-flung twin is 12237 in Albany, NY, 839 miles away.
- 🧭 Farther south than 69% of all ZIP codes, and farther east than 51%.
- 🎯683 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 37221 and you would come out at 36.06°S, 93.03°E — 1,335 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 37m of daylight. Shortest: 9h 42m.
- 📏 At 49.3 square miles of land, 37221 is bigger than 59% of ZIP codes — room for about 37 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 41,935This ZIP41,935 |
|---|---|
| Households | 19,935This ZIP19,935 |
| Housing units | 21,079This ZIP21,079 |
| Median age | 41.1This ZIP41.1Tennessee38.9US 38.9 |
| Median household income | $97,751This ZIP$97,751Tennessee$69,595US $80,734 |
| Median home value | $463,900This ZIP$463,900Tennessee$286,700US $332,700 |
| Median gross rent | $1,844This ZIP$1,844Tennessee$1,189US $1,413 |
| Bachelor's degree or higher | 63.1%This ZIP63.1% |
| Mean commute | 25.2 minThis ZIP25.2 min |
| Population density | 850.0 / sq miThis ZIP850.0 / sq mi |
Business and tax activity
| Business establishments | 708This ZIP708 |
|---|---|
| Employees | 8,281This ZIP8,281 |
| Annual payroll | $335,234,000This ZIP$335,234,000 |
| Tax returns filed | 21,830This ZIP21,830 |
| Total adjusted gross income | $2,400,555,000This ZIP$2,400,555,000 |
Land area
| Land area | 49.34 sq miThis ZIP49.34 sq mi |
|---|---|
| Water area | 0.27 sq miThis ZIP0.27 sq mi |
Counties 37221 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Davidson County | 91.9% |
| Williamson County | 8.1% |
Other place names in 37221
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 37221
| ZIP | City | Distance |
|---|---|---|
37143 | Pegram, TN | 5.3 mi |
37209 | Nashville, TN | 6.4 mi |
37069 | Franklin, TN | 6.5 mi |
37205 | Nashville, TN | 6.8 mi |
37215 | Nashville, TN | 7.8 mi |
37218 | Nashville, TN | 8.3 mi |
37082 | Kingston Springs, TN | 8.4 mi |
37220 | Nashville, TN | 10.0 mi |
37062 | Fairview, TN | 10.3 mi |
37024 | Brentwood, TN | 10.7 mi |
Find every ZIP code within 10 miles of 37221 →
Questions about this ZIP code
Where is ZIP code 37221?
37221 is in Nashville, Tennessee, in Davidson County, part of the Nashville-Davidson--Murfreesboro--Franklin, TN metropolitan area. Its published point location is 36.0592, -86.9723.
What county is 37221 in?
37221 spans 2 counties: Davidson County and Williamson County. Most of it falls in Davidson 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 37221?
Nashville uses area codes 615 and 629, from NANPA's telephone records.
What time zone is 37221 in?
37221 uses America/Chicago.
How many people live in 37221?
About 41,935 people live in ZIP code 37221, in 19,935 households, at 850.0 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 37221?
$97,751 a year, against $69,595 across Tennessee.
What ZIP codes are near 37221?
The closest are 37143 (5.3 mi), 37209 (6.4 mi), 37069 (6.5 mi), 37205 (6.8 mi) and 37215 (7.8 mi).
Is 37221 a PO Box ZIP code?
37221 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “37221 ZIP Code — Nashville, Tennessee (Davidson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37221
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/37221.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.