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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/80231

80231

ZIP 80231 is in Denver, Colorado, mostly in Denver County; area codes 303, 720 and 983; Mountain time. Denver has 66 ZIP codes in all.

Type
Standard
Time zone
America/Denver
County
Denver +1 more
Population
35,883
Coordinates
39.6712, -104.8879
☼ Live from 80231 — Denver, CO

Weather right now

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Local time: —

Where 80231 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 80231
  • 🔢 Type 80231 into a pocket calculator and turn it upside down: IEZOB — not quite a word, sorry.
  • ➕ 80231 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011100101100111
  • 🏠 Its numerical neighbours: 80230 (Denver, CO, 3 mi away) and 80232 (Denver, CO, 11 mi away).
  • 🔄 Backwards, 80231 becomes 13208 — and that is a real ZIP code: Syracuse, NY, 1,501 miles away.
  • 👥 70 other ZIP codes are made of exactly the same digits (01238, 01832, 02138, 02381, 02813, 02831, …). The farthest-flung twin is 02381 in White Horse Beach, MA, 1,790 miles away.
  • 🧭 Farther north than 53% of all ZIP codes, and farther west than 83%.
  • 🎯335 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 80231 and you would come out at 39.67°S, 75.11°E — 710 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 59m of daylight. Shortest: 9h 21m.
  • 📏 At 4.9 square miles of land, 80231 is bigger than 19% of ZIP codes — room for about 3.7 Central Parks.
🌙 The sky over 80231 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population35,883This ZIP35,883
Households16,395This ZIP16,395
Housing units18,268This ZIP18,268
Median age33.3This ZIP33.3Colorado37.7US 38.9
Median household income$76,502This ZIP$76,502Colorado$95,470US $80,734
Median home value$500,600This ZIP$500,600Colorado$539,400US $332,700
Median gross rent$1,764This ZIP$1,764Colorado$1,761US $1,413
Bachelor's degree or higher51.9%This ZIP51.9%
Mean commute26.1 minThis ZIP26.1 min
Population density7,350.1 / sq miThis ZIP7,350.1 / sq mi

Business and tax activity

Business establishments953This ZIP953
Employees15,771This ZIP15,771
Annual payroll$876,416,000This ZIP$876,416,000
Tax returns filed17,890This ZIP17,890
Total adjusted gross income$1,426,193,000This ZIP$1,426,193,000

Land area

Land area4.88 sq miThis ZIP4.88 sq mi
Water area0.00 sq mi

Counties 80231 spans

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

CountyShare of this ZIP
Denver County 58.2%
Arapahoe County 41.8%

Other place names in 80231

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

ZIP codes near 80231

ZIPCityDistance
80224 Denver, CO 1.7 mi
80247 Denver, CO 1.9 mi
80222 Denver, CO 2.1 mi
80237 Denver, CO 2.3 mi
80014 Aurora, CO 2.7 mi
80246 Denver, CO 3.3 mi
80012 Aurora, CO 3.3 mi
80230 Denver, CO 3.4 mi
80210 Denver, CO 4.0 mi
80111 Englewood, CO 4.1 mi

Find every ZIP code within 10 miles of 80231 →

Questions about this ZIP code

Where is ZIP code 80231?

80231 is in Denver, Colorado, in Denver County, part of the Denver-Aurora-Centennial, CO metropolitan area. Its published point location is 39.6712, -104.8879.

What county is 80231 in?

80231 spans 2 counties: Denver County and Arapahoe County. Most of it falls in Denver 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 80231?

Denver uses area codes 303, 720 and 983, from NANPA's telephone records.

What time zone is 80231 in?

80231 uses America/Denver.

How many people live in 80231?

About 35,883 people live in ZIP code 80231, in 16,395 households, at 7,350.1 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 80231?

$76,502 a year, against $95,470 across Colorado.

What ZIP codes are near 80231?

The closest are 80224 (1.7 mi), 80247 (1.9 mi), 80222 (2.1 mi), 80237 (2.3 mi) and 80014 (2.7 mi).

Is 80231 a PO Box ZIP code?

80231 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “80231 ZIP Code — Denver, Colorado (Denver County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/80231

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