Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/80501

80501

ZIP 80501 is in Longmont, Colorado, in Boulder County; area codes 720, 303 and 983; Mountain time. Longmont has 4 ZIP codes; the others are 80502, 80503 and 80504.

Type
Standard
Time zone
America/Denver
County
Boulder
Metro area
Boulder, CO
Population
44,147
Coordinates
40.1648, -105.1019
☼ Live from 80501 — Longmont, CO

Weather right now

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Local time: —

Where 80501 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 80501
  • 🔢 Type 80501 into a pocket calculator and turn it upside down: IOSOB — not quite a word, sorry.
  • ➕ As a number, 80,501 = 79 × 1019. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011101001110101
  • 🏠 Its numerical neighbours: 80498 (Silverthorne, CO, 68 mi away) and 80502 (Longmont, CO, 0 mi away).
  • 🔄 Backwards, 80501 becomes 10508, which is not a ZIP code at all.
  • 👥 25 other ZIP codes are made of exactly the same digits (00851, 01085, 01508, 01805, 01850, 05081, …). The farthest-flung twin is 00851 in Kingshill, VI, 2,852 miles away.
  • 🧭 Farther north than 58% of all ZIP codes, and farther west than 83%.
  • 🎯346 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 80501 and you would come out at 40.16°S, 74.90°E — 674 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 02m of daylight. Shortest: 9h 18m.
  • 📏 At 12.6 square miles of land, 80501 is bigger than 30% of ZIP codes — room for about 9.6 Central Parks.
🌙 The sky over 80501 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population44,147This ZIP44,147
Households18,945This ZIP18,945
Housing units19,754This ZIP19,754
Median age38.4This ZIP38.4Colorado37.7US 38.9
Median household income$80,911This ZIP$80,911Colorado$95,470US $80,734
Median home value$488,800This ZIP$488,800Colorado$539,400US $332,700
Median gross rent$1,662This ZIP$1,662Colorado$1,761US $1,413
Bachelor's degree or higher40.3%This ZIP40.3%
Mean commute24.3 minThis ZIP24.3 min
Population density3,499.6 / sq miThis ZIP3,499.6 / sq mi

Business and tax activity

Business establishments1,955This ZIP1,955
Employees26,371This ZIP26,371
Annual payroll$1,595,454,000This ZIP$1,595,454,000
Tax returns filed22,480This ZIP22,480
Total adjusted gross income$1,544,360,000This ZIP$1,544,360,000

Land area

Land area12.62 sq miThis ZIP12.62 sq mi
Water area0.23 sq miThis ZIP0.23 sq mi

Other place names in 80501

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

ZIP codes near 80501

ZIPCityDistance
80502 Longmont, CO 0.2 mi
80504 Longmont, CO 3.8 mi
80544 Niwot, CO 5.6 mi
80503 Longmont, CO 5.7 mi
80533 Hygiene, CO 7.0 mi
80542 Mead, CO 7.2 mi
80516 Erie, CO 8.8 mi
80513 Berthoud, CO 9.3 mi
80520 Firestone, CO 9.6 mi
80301 Boulder, CO 9.8 mi

Find every ZIP code within 10 miles of 80501 →

Questions about this ZIP code

Where is ZIP code 80501?

80501 is in Longmont, Colorado, in Boulder County, part of the Boulder, CO metropolitan area. Its published point location is 40.1648, -105.1019.

What county is 80501 in?

80501 lies in Boulder County.

What area code is 80501?

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

What time zone is 80501 in?

80501 uses America/Denver.

How many people live in 80501?

About 44,147 people live in ZIP code 80501, in 18,945 households, at 3,499.6 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 80501?

$80,911 a year, against $95,470 across Colorado.

What ZIP codes are near 80501?

The closest are 80502 (0.2 mi), 80504 (3.8 mi), 80544 (5.6 mi), 80503 (5.7 mi) and 80533 (7 mi).

Is 80501 a PO Box ZIP code?

80501 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “80501 ZIP Code — Longmont, Colorado (Boulder County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/80501

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