37138
ZIP 37138 is Old Hickory, Tennessee, mostly in Davidson County; area codes 615 and 629; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Davidson +1 more
- Population
- 22,575
- Coordinates
- 36.2377, -86.6070
Weather right now
Asking the National Weather Service…
Where 37138 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 37138 into a pocket calculator and turn it upside down: BEILE — not quite a word, sorry.
- ➕ As a number, 37,138 = 2 × 31 × 599. Its digits add up to 22, a total 2,607 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1001000100010010 - 🏠 Its numerical neighbours: 37137 (Nunnelly, TN, 56 mi away) and 37140 (Only, TN, 64 mi away).
- 🔄 Backwards, 37138 becomes 83173, which is not a ZIP code at all.
- 👥 25 other ZIP codes are made of exactly the same digits (13738, 13783, 17833, 18337, 31738, 31783, …). The farthest-flung twin is 83713 in Boise, ID, 1,646 miles away.
- 🧭 Farther south than 68% of all ZIP codes, and farther east than 52%.
- 🎯696 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 37138 and you would come out at 36.24°S, 93.39°E — 1,316 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 38m of daylight. Shortest: 9h 41m.
- 📏 At 17.9 square miles of land, 37138 is bigger than 36% of ZIP codes — room for about 14 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 22,575This ZIP22,575 |
|---|---|
| Households | 9,708This ZIP9,708 |
| Housing units | 10,248This ZIP10,248 |
| Median age | 44.1This ZIP44.1Tennessee38.9US 38.9 |
| Median household income | $85,149This ZIP$85,149Tennessee$69,595US $80,734 |
| Median home value | $363,000This ZIP$363,000Tennessee$286,700US $332,700 |
| Median gross rent | $1,526This ZIP$1,526Tennessee$1,189US $1,413 |
| Bachelor's degree or higher | 34.3%This ZIP34.3% |
| Mean commute | 28.4 minThis ZIP28.4 min |
| Population density | 1,259.3 / sq miThis ZIP1,259.3 / sq mi |
Business and tax activity
| Business establishments | 352This ZIP352 |
|---|---|
| Employees | 3,731This ZIP3,731 |
| Annual payroll | $194,704,000This ZIP$194,704,000 |
| Tax returns filed | 11,960This ZIP11,960 |
| Total adjusted gross income | $1,090,512,000This ZIP$1,090,512,000 |
Land area
| Land area | 17.93 sq miThis ZIP17.93 sq mi |
|---|---|
| Water area | 2.65 sq miThis ZIP2.65 sq mi |
Counties 37138 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 | 70.3% |
| Wilson County | 29.7% |
Other place names in 37138
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 37138
| ZIP | City | Distance |
|---|---|---|
37077 | Hendersonville, TN | 4.7 mi |
37115 | Madison, TN | 5.2 mi |
37121 | Mount Juliet, TN | 5.6 mi |
37214 | Nashville, TN | 5.7 mi |
37076 | Hermitage, TN | 6.6 mi |
37216 | Nashville, TN | 6.9 mi |
37075 | Hendersonville, TN | 7.1 mi |
37122 | Mount Juliet, TN | 7.9 mi |
37206 | Nashville, TN | 8.0 mi |
37070 | Goodlettsville, TN | 8.4 mi |
Find every ZIP code within 10 miles of 37138 →
Questions about this ZIP code
Where is ZIP code 37138?
37138 is in Old Hickory, Tennessee, in Davidson County, part of the Nashville-Davidson--Murfreesboro--Franklin, TN metropolitan area. Its published point location is 36.2377, -86.6070.
What county is 37138 in?
37138 spans 2 counties: Davidson County and Wilson 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 37138?
Old Hickory uses area codes 615 and 629, from NANPA's telephone records.
What time zone is 37138 in?
37138 uses America/Chicago.
How many people live in 37138?
About 22,575 people live in ZIP code 37138, in 9,708 households, at 1,259.3 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 37138?
$85,149 a year, against $69,595 across Tennessee.
What ZIP codes are near 37138?
The closest are 37077 (4.7 mi), 37115 (5.2 mi), 37121 (5.6 mi), 37214 (5.7 mi) and 37076 (6.6 mi).
Is 37138 a PO Box ZIP code?
37138 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “37138 ZIP Code — Old Hickory, Tennessee (Davidson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37138
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/37138.json Underlying data is public domain or openly licensed — sources, vintages and licences.