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zipcodes.pro — ZIP/00921

00921

ZIP 00921 is in San Juan, Puerto Rico, in San Juan Municipio; area code 787; Atlantic time. San Juan has 37 ZIP codes in all.

Type
Standard
Time zone
America/Puerto_Rico
County
San Juan
Population
33,119
Coordinates
18.3921, -66.0871
☼ Live from 00921 — San Juan, PR

Weather right now

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NEXRAD radar
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Local time: —

Where 00921 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 00921
  • 🔢 Type 00921 into a pocket calculator and turn it upside down: IZGOO — not quite a word, sorry.
  • ➕ As a number, 921 = 3 × 307. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110011001
  • 🏠 Its numerical neighbours: 00920 (San Juan, PR, 2 mi away) and 00922 (San Juan, PR, 5 mi away).
  • 🔄 Backwards, 00921 becomes 12900, which is not a ZIP code at all.
  • 👥 34 other ZIP codes are made of exactly the same digits (00912, 01029, 01092, 01902, 02019, 02109, …). The farthest-flung twin is 09102 in APO AE, a military post office, 4,582 miles away.
  • 🧭 Farther south than 99% of all ZIP codes, and farther east than 98%.
  • 🎯2,435 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 00921 and you would come out at 18.39°S, 113.91°E — 679 miles from Denpasar, Indonesia, the nearest big city to that spot.
  • ☀Longest day of the year: 13h 14m of daylight. Shortest: 11h 01m.
  • 📏 At 3.1 square miles of land, 00921 is bigger than 14% of ZIP codes — room for about 2.3 Central Parks.
🌙 The sky over 00921 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population33,119This ZIP33,119
Households14,422This ZIP14,422
Housing units17,643This ZIP17,643
Median age42.1This ZIP42.1Puerto Rico44.8US 38.9
Median household income$23,598This ZIP$23,598Puerto Rico$26,297US $80,734
Median home value$148,600This ZIP$148,600Puerto Rico$131,500US $332,700
Median gross rent$584This ZIP$584Puerto Rico$578US $1,413
Bachelor's degree or higher34.2%This ZIP34.2%
Mean commute23.8 minThis ZIP23.8 min
Population density10,791.5 / sq miThis ZIP10,791.5 / sq mi

Land area

Land area3.07 sq miThis ZIP3.07 sq mi
Water area0.00 sq mi

Other place names in 00921

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

ZIP codes near 00921

ZIPCityDistance
00927 San Juan, PR 1.2 mi
00968 Guaynabo, PR 1.3 mi
00966 Guaynabo, PR 1.8 mi
00920 San Juan, PR 2.1 mi
00969 Guaynabo, PR 2.3 mi
00918 San Juan, PR 2.4 mi
00925 San Juan, PR 2.5 mi
00934 Fort Buchanan, PR 2.6 mi
00978 St Just, PR 2.6 mi
00970 Guaynabo, PR 2.9 mi

Find every ZIP code within 10 miles of 00921 →

Questions about this ZIP code

Where is ZIP code 00921?

00921 is in San Juan, Puerto Rico, in San Juan Municipio, part of the San Juan-Bayamón-Caguas, PR metropolitan area. Its published point location is 18.3921, -66.0871.

What county is 00921 in?

00921 lies in San Juan Municipio.

What area code is 00921?

San Juan uses area code 787, from NANPA's telephone records.

What time zone is 00921 in?

00921 uses America/Puerto_Rico.

How many people live in 00921?

About 33,119 people live in ZIP code 00921, in 14,422 households, at 10,791.5 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 00921?

$23,598 a year, against $26,297 across Puerto Rico.

What ZIP codes are near 00921?

The closest are 00927 (1.2 mi), 00968 (1.3 mi), 00966 (1.8 mi), 00920 (2.1 mi) and 00969 (2.3 mi).

Is 00921 a PO Box ZIP code?

00921 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “00921 ZIP Code — San Juan, Puerto Rico (San Juan Municipio).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/00921

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