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/00604

00604

ZIP 00604 is in Aguadilla, Puerto Rico, in Aguadilla Municipio; area codes 787 and 939; Atlantic time. Aguadilla has 3 ZIP codes; the others are 00603 and 00605.

Type
No street area
Time zone
America/Puerto_Rico
County
Aguadilla
Metro area
Aguadilla, PR
Coordinates
18.4274, -67.1541

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 00603, whose figures describe that area — not this ZIP code.

☼ Live from 00604 — Aguadilla, PR

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 00604 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 00604
  • 🔢 Type 00604 into a pocket calculator and turn it upside down: hOgOO — not quite a word, sorry.
  • ➕ As a number, 604 = 2 × 2 × 151. Its digits add up to 10, a total 513 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001011100
  • 🏠 Its numerical neighbours: 00603 (Aguadilla, PR, 3 mi away) and 00605 (Aguadilla, PR, 0 mi away).
  • 🔄 Backwards, 00604 becomes 40600, which is not a ZIP code at all.
  • 👥 6 other ZIP codes are made of exactly the same digits (04006, 06040, 40006, 40060, 60004, 60040). The farthest-flung twin is 60004 in Arlington Heights, IL, 2,043 miles away.
  • 🧭 Farther south than 99% of all ZIP codes, and farther east than 98%.
  • 🎯2,383 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 00604 and you would come out at 18.43°S, 112.85°E — 694 miles from Denpasar, Indonesia, the nearest big city to that spot.
  • ☀Longest day of the year: 13h 14m of daylight. Shortest: 11h 01m.
🌙 The sky over 00604 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Land area

ZIP codes near 00604

ZIPCityDistance
00605 Aguadilla, PR 0.0 mi
00603 Aguadilla, PR 2.8 mi
34050 FPO AA, AA 3.7 mi
00602 Aguada, PR 4.7 mi
00676 Moca, PR 5.7 mi
00690 San Antonio, PR 5.9 mi
00677 Rincon, PR 8.1 mi
00610 Anasco, PR 9.3 mi
00662 Isabela, PR 9.5 mi
00685 San Sebastian, PR 13.4 mi

Find every ZIP code within 10 miles of 00604 →

Questions about this ZIP code

Where is ZIP code 00604?

00604 is in Aguadilla, Puerto Rico, in Aguadilla Municipio, part of the Aguadilla, PR metropolitan area. Its published point location is 18.4274, -67.1541.

What county is 00604 in?

00604 lies in Aguadilla Municipio.

What area code is 00604?

Aguadilla uses area codes 787 and 939, from NANPA's telephone records.

What time zone is 00604 in?

00604 uses America/Puerto_Rico.

What ZIP codes are near 00604?

The closest are 00605 (0 mi), 00603 (2.8 mi), 34050 (3.7 mi), 00602 (4.7 mi) and 00676 (5.7 mi).

Is 00604 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.

Download or cite

Cite this page

zipcodes.pro. “00604 ZIP Code — Aguadilla, Puerto Rico (Aguadilla Municipio).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/00604

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/00604.json

Underlying data is public domain or openly licensed — sources, vintages and licences.