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ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/37923

37923

ZIP 37923 is in Knoxville, Tennessee, in Knox County; area code 865; Eastern time. Knoxville has 31 ZIP codes in all.

Type
Standard
Time zone
America/New_York
County
Knox
Metro area
Knoxville, TN
Population
30,131
Coordinates
35.9275, -84.0807
☼ Live from 37923 — Knoxville, TN

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Local time: —

Where 37923 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 37923
  • 🔢 Type 37923 into a pocket calculator and turn it upside down: EZGLE — not quite a word, sorry.
  • ➕ As a number, 37,923 = 3 × 12641. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001010000100011
  • 🏠 Its numerical neighbours: 37922 (Knoxville, TN, 5 mi away) and 37924 (Knoxville, TN, 17 mi away).
  • 🔄 Backwards, 37923 becomes 32973, which is not a ZIP code at all.
  • 👥 23 other ZIP codes are made of exactly the same digits (23397, 23937, 29373, 29733, 32739, 32793, …). The farthest-flung twin is 97233 in Portland, OR, 2,095 miles away.
  • 🧭 Farther south than 70% of all ZIP codes, and farther east than 60%.
  • 🎯834 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 37923 and you would come out at 35.93°S, 95.92°E — 1,173 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 36m of daylight. Shortest: 9h 43m.
  • 📏 At 11.1 square miles of land, 37923 is bigger than 28% of ZIP codes — room for about 8.4 Central Parks.
🌙 The sky over 37923 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population30,131This ZIP30,131
Households12,990This ZIP12,990
Housing units14,152This ZIP14,152
Median age36.6This ZIP36.6Tennessee38.9US 38.9
Median household income$73,699This ZIP$73,699Tennessee$69,595US $80,734
Median home value$333,000This ZIP$333,000Tennessee$286,700US $332,700
Median gross rent$1,371This ZIP$1,371Tennessee$1,189US $1,413
Bachelor's degree or higher46.7%This ZIP46.7%
Mean commute20.5 minThis ZIP20.5 min
Population density2,717.4 / sq miThis ZIP2,717.4 / sq mi

Business and tax activity

Business establishments897This ZIP897
Employees16,570This ZIP16,570
Annual payroll$977,565,000This ZIP$977,565,000
Tax returns filed14,990This ZIP14,990
Total adjusted gross income$1,135,353,000This ZIP$1,135,353,000

Land area

Land area11.09 sq miThis ZIP11.09 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 37923

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

ZIP codes near 37923

ZIPCityDistance
37909 Knoxville, TN 3.5 mi
37931 Knoxville, TN 4.2 mi
37919 Knoxville, TN 4.6 mi
37922 Knoxville, TN 4.8 mi
37921 Knoxville, TN 5.6 mi
37934 Knoxville, TN 6.6 mi
37932 Knoxville, TN 6.6 mi
37930 Knoxville, TN 7.3 mi
37777 Louisville, TN 7.4 mi
37912 Knoxville, TN 7.8 mi

Find every ZIP code within 10 miles of 37923 →

Questions about this ZIP code

Where is ZIP code 37923?

37923 is in Knoxville, Tennessee, in Knox County, part of the Knoxville, TN metropolitan area. Its published point location is 35.9275, -84.0807.

What county is 37923 in?

37923 lies in Knox County.

What area code is 37923?

Knoxville uses area code 865, from NANPA's telephone records.

What time zone is 37923 in?

37923 uses America/New_York.

How many people live in 37923?

About 30,131 people live in ZIP code 37923, in 12,990 households, at 2,717.4 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 37923?

$73,699 a year, against $69,595 across Tennessee.

What ZIP codes are near 37923?

The closest are 37909 (3.5 mi), 37931 (4.2 mi), 37919 (4.6 mi), 37922 (4.8 mi) and 37921 (5.6 mi).

Is 37923 a PO Box ZIP code?

37923 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “37923 ZIP Code — Knoxville, Tennessee (Knox County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37923

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