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/80502

80502

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

Type
No street area
Time zone
America/Denver
County
Boulder
Metro area
Boulder, CO
Coordinates
40.1672, -105.1019

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 80501, whose figures describe that area — not this ZIP code.

☼ Live from 80502 — Longmont, CO

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Where 80502 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 80502
  • 🔢 Type 80502 into a pocket calculator and turn it upside down: ZOSOB — not quite a word, sorry.
  • ➕ As a number, 80,502 = 2 × 3 × 13417. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011101001110110
  • 🏠 Its numerical neighbours: 80501 (Longmont, CO, 0 mi away) and 80503 (Longmont, CO, 6 mi away).
  • 🔄 Backwards, 80502 becomes 20508 — and that is a real ZIP code: Washington, DC, 1,493 miles away.
  • 👥 23 other ZIP codes are made of exactly the same digits (05820, 08025, 08052, 08205, 08250, 08502, …). The farthest-flung twin is 05820 in Albany, VT, 1,686 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 80502 and you would come out at 40.17°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.
🌙 The sky over 80502 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments19This ZIP19
Employees63This ZIP63
Annual payroll$1,656,000This ZIP$1,656,000

Land area

ZIP codes near 80502

ZIPCityDistance
80501 Longmont, CO 0.2 mi
80504 Longmont, CO 3.8 mi
80503 Longmont, CO 5.7 mi
80544 Niwot, CO 5.8 mi
80533 Hygiene, CO 7.0 mi
80542 Mead, CO 7.1 mi
80516 Erie, CO 9.0 mi
80513 Berthoud, CO 9.2 mi
80520 Firestone, CO 9.6 mi
80301 Boulder, CO 9.9 mi

Find every ZIP code within 10 miles of 80502 →

Questions about this ZIP code

Where is ZIP code 80502?

80502 is in Longmont, Colorado, in Boulder County, part of the Boulder, CO metropolitan area. Its published point location is 40.1672, -105.1019.

What county is 80502 in?

80502 lies in Boulder County.

What area code is 80502?

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

What time zone is 80502 in?

80502 uses America/Denver.

What ZIP codes are near 80502?

The closest are 80501 (0.2 mi), 80504 (3.8 mi), 80503 (5.7 mi), 80544 (5.8 mi) and 80533 (7 mi).

Is 80502 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “80502 ZIP Code — Longmont, Colorado (Boulder County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/80502

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curl https://zipcodes.pro/zip/80502.json

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