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zipcodes.pro — ZIP/37421

37421

ZIP 37421 is in Chattanooga, Tennessee, in Hamilton County; area code 423; Eastern time. Chattanooga has 20 ZIP codes in all.

Type
Standard
Time zone
America/New_York
County
Hamilton
Metro area
Chattanooga, TN-GA
Population
52,985
Coordinates
35.0275, -85.1536
☼ Live from 37421 — Chattanooga, TN

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Where 37421 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 37421
  • 🔢 Type 37421 into a pocket calculator and turn it upside down: IZhLE — not quite a word, sorry.
  • ➕ As a number, 37,421 = 23 × 1627. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001001000101101
  • 🏠 Its numerical neighbours: 37419 (Chattanooga, TN, 15 mi away) and 37422 (Chattanooga, TN, 9 mi away).
  • 🔄 Backwards, 37421 becomes 12473 — and that is a real ZIP code: Round Top, NY, 780 miles away.
  • 👥 54 other ZIP codes are made of exactly the same digits (12473, 12734, 12743, 13472, 14273, 14723, …). The farthest-flung twin is 13472 in Thendara, NY, 804 miles away.
  • 🧭 Farther south than 74% of all ZIP codes, and farther east than 56%.
  • 🎯807 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 37421 and you would come out at 35.03°S, 94.85°E — 1,227 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 31m of daylight. Shortest: 9h 48m.
  • 📏 At 31.7 square miles of land, 37421 is bigger than 47% of ZIP codes — room for about 24 Central Parks.
🌙 The sky over 37421 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population52,985This ZIP52,985
Households22,278This ZIP22,278
Housing units24,063This ZIP24,063
Median age40.8This ZIP40.8Tennessee38.9US 38.9
Median household income$82,517This ZIP$82,517Tennessee$69,595US $80,734
Median home value$333,700This ZIP$333,700Tennessee$286,700US $332,700
Median gross rent$1,405This ZIP$1,405Tennessee$1,189US $1,413
Bachelor's degree or higher38.8%This ZIP38.8%
Mean commute19.8 minThis ZIP19.8 min
Population density1,671.3 / sq miThis ZIP1,671.3 / sq mi

Business and tax activity

Business establishments2,083This ZIP2,083
Employees42,723This ZIP42,723
Annual payroll$2,101,732,000This ZIP$2,101,732,000
Tax returns filed25,040This ZIP25,040
Total adjusted gross income$2,049,954,000This ZIP$2,049,954,000

Land area

Land area31.70 sq miThis ZIP31.70 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 37421

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

ZIP codes near 37421

ZIPCityDistance
30726 Graysville, GA 3.7 mi
37411 Chattanooga, TN 4.3 mi
37412 Chattanooga, TN 4.7 mi
37416 Chattanooga, TN 4.9 mi
37315 Collegedale, TN 5.9 mi
37406 Chattanooga, TN 6.1 mi
37404 Chattanooga, TN 6.8 mi
37302 Apison, TN 7.5 mi
37351 Lupton City, TN 7.9 mi
37407 Chattanooga, TN 7.9 mi

Find every ZIP code within 10 miles of 37421 →

Questions about this ZIP code

Where is ZIP code 37421?

37421 is in Chattanooga, Tennessee, in Hamilton County, part of the Chattanooga, TN-GA metropolitan area. Its published point location is 35.0275, -85.1536.

What county is 37421 in?

37421 lies in Hamilton County.

What area code is 37421?

Chattanooga uses area code 423, from NANPA's telephone records.

What time zone is 37421 in?

37421 uses America/New_York.

How many people live in 37421?

About 52,985 people live in ZIP code 37421, in 22,278 households, at 1,671.3 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 37421?

$82,517 a year, against $69,595 across Tennessee.

What ZIP codes are near 37421?

The closest are 30726 (3.7 mi), 37411 (4.3 mi), 37412 (4.7 mi), 37416 (4.9 mi) and 37315 (5.9 mi).

Is 37421 a PO Box ZIP code?

37421 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “37421 ZIP Code — Chattanooga, Tennessee (Hamilton County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/37421

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