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zipcodes.pro — ZIP/37166

37166

ZIP 37166 is Smithville, Tennessee, mostly in DeKalb County; area codes 615 and 629; Central time.

Type
Standard
Time zone
America/Chicago
County
DeKalb +2 more
Metro area
none
Population
15,731
Coordinates
35.9180, -85.7869
☼ Live from 37166 — Smithville, TN

Weather right now

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Local time: —

Where 37166 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.

★ Weird and wonderful facts about 37166
  • 🔢 Type 37166 into a pocket calculator and turn it upside down: ggILE — not quite a word, sorry.
  • ➕ As a number, 37,166 = 2 × 18583. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001000100101110
  • 🏠 Its numerical neighbours: 37165 (Slayden, TN, 98 mi away) and 37167 (Smyrna, TN, 42 mi away).
  • 🔄 Backwards, 37166 becomes 66173, which is not a ZIP code at all.
  • 👥 24 other ZIP codes are made of exactly the same digits (13667, 13676, 16367, 16637, 16673, 17366, …). The farthest-flung twin is 13667 in Norfolk, NY, 834 miles away.
  • 🧭 Farther south than 70% of all ZIP codes, and farther east than 54%.
  • 🎯747 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 37166 and you would come out at 35.92°S, 94.21°E — 1,268 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 36m of daylight. Shortest: 9h 43m.
  • 📏 At 154.6 square miles of land, 37166 is bigger than 87% of ZIP codes — room for about 117 Central Parks.
🌙 The sky over 37166 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population15,731This ZIP15,731
Households6,300This ZIP6,300
Housing units7,205This ZIP7,205
Median age41.2This ZIP41.2Tennessee38.9US 38.9
Median household income$52,797This ZIP$52,797Tennessee$69,595US $80,734
Median home value$224,300This ZIP$224,300Tennessee$286,700US $332,700
Median gross rent$813This ZIP$813Tennessee$1,189US $1,413
Bachelor's degree or higher20.1%This ZIP20.1%
Mean commute26.1 minThis ZIP26.1 min
Population density101.8 / sq miThis ZIP101.8 / sq mi

Business and tax activity

Business establishments260This ZIP260
Employees3,781This ZIP3,781
Annual payroll$150,881,000This ZIP$150,881,000
Tax returns filed6,300This ZIP6,300
Total adjusted gross income$380,609,000This ZIP$380,609,000

Land area

Land area154.59 sq miThis ZIP154.59 sq mi
Water area11.46 sq miThis ZIP11.46 sq mi

Counties 37166 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
DeKalb County 90.8%
Warren County 7.5%
Cannon County 1.7%

Other place names in 37166

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 37166

ZIPCityDistance
37059 Dowelltown, TN 8.0 mi
37095 Liberty, TN 10.3 mi
38587 Walling, TN 10.4 mi
38582 Silver Point, TN 12.6 mi
38550 Campaign, TN 13.4 mi
38569 Lancaster, TN 14.4 mi
38579 Quebeck, TN 14.5 mi
38544 Baxter, TN 15.2 mi
38581 Rock Island, TN 15.4 mi
37190 Woodbury, TN 15.7 mi

Find every ZIP code within 10 miles of 37166 →

Questions about this ZIP code

Where is ZIP code 37166?

37166 is in Smithville, Tennessee, in DeKalb County. Its published point location is 35.9180, -85.7869.

What county is 37166 in?

37166 spans 3 counties: DeKalb County, Warren County and Cannon County. Most of it falls in DeKalb 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 37166?

Smithville uses area codes 615 and 629, from NANPA's telephone records.

What time zone is 37166 in?

37166 uses America/Chicago.

How many people live in 37166?

About 15,731 people live in ZIP code 37166, in 6,300 households, at 101.8 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 37166?

$52,797 a year, against $69,595 across Tennessee.

What ZIP codes are near 37166?

The closest are 37059 (8 mi), 37095 (10.3 mi), 38587 (10.4 mi), 38582 (12.6 mi) and 38550 (13.4 mi).

Is 37166 a PO Box ZIP code?

37166 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “37166 ZIP Code — Smithville, Tennessee (DeKalb County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37166

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/37166.json

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