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Where 00731 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.
- 🔢 Type 00731 into a pocket calculator and turn it upside down: IELOO — not quite a word, sorry.
- ➕ As a number, 731 = 17 × 43. Its digits add up to 11, a total 714 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1011011011 - 🏠 Its numerical neighbours: 00730 (Ponce, PR, 6 mi away) and 00732 (Ponce, PR, 7 mi away).
- 🔄 Backwards, 00731 becomes 13700, which is not a ZIP code at all.
- 👥 32 other ZIP codes are made of exactly the same digits (01037, 01073, 01370, 01703, 01730, 03071, …). The farthest-flung twin is 73001 in Albert, OK, 2,276 miles away.
- 🧭 Farther south than 99% of all ZIP codes, and farther east than 98%.
- 🎯2,423 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 00731 and you would come out at 18.11°S, 113.36°E — 665 miles from Denpasar, Indonesia, the nearest big city to that spot.
- ☀Longest day of the year: 13h 13m of daylight. Shortest: 11h 02m.
- 📏 At 49.0 square miles of land, 00731 is bigger than 59% of ZIP codes — room for about 37 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 9,724This ZIP9,724 |
|---|---|
| Households | 3,717This ZIP3,717 |
| Housing units | 5,170This ZIP5,170 |
| Median age | 47.5This ZIP47.5Puerto Rico44.8US 38.9 |
| Median household income | $18,736This ZIP$18,736Puerto Rico$26,297US $80,734 |
| Median home value | $88,700This ZIP$88,700Puerto Rico$131,500US $332,700 |
| Median gross rent | $424This ZIP$424Puerto Rico$578US $1,413 |
| Bachelor's degree or higher | 23.3%This ZIP23.3% |
| Mean commute | 27.4 minThis ZIP27.4 min |
| Population density | 198.6 / sq miThis ZIP198.6 / sq mi |
Land area
| Land area | 48.95 sq miThis ZIP48.95 sq mi |
|---|---|
| Water area | 1.11 sq miThis ZIP1.11 sq mi |
Counties 00731 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Ponce Municipio | 97.0% |
| Adjuntas Municipio | 3.0% |
Other place names in 00731
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 00731
| ZIP | City | Distance |
|---|---|---|
00780 | Coto Laurel, PR | 4.7 mi |
00730 | Ponce, PR | 5.7 mi |
00624 | Penuelas, PR | 6.9 mi |
00732 | Ponce, PR | 7.0 mi |
00733 | Ponce, PR | 7.0 mi |
00734 | Ponce, PR | 7.0 mi |
00664 | Jayuya, PR | 7.5 mi |
00717 | Ponce, PR | 7.6 mi |
00728 | Ponce, PR | 8.4 mi |
00716 | Ponce, PR | 8.8 mi |
Find every ZIP code within 10 miles of 00731 →
Questions about this ZIP code
Where is ZIP code 00731?
00731 is in Ponce, Puerto Rico, in Ponce Municipio, part of the Ponce, PR metropolitan area. Its published point location is 18.1099, -66.6356.
What county is 00731 in?
00731 spans 2 counties: Ponce Municipio and Adjuntas Municipio. Most of it falls in Ponce Municipio, 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 00731?
Ponce uses area codes 787 and 939, from NANPA's telephone records.
What time zone is 00731 in?
00731 uses America/Puerto_Rico.
How many people live in 00731?
About 9,724 people live in ZIP code 00731, in 3,717 households, at 198.6 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 00731?
$18,736 a year, against $26,297 across Puerto Rico.
What ZIP codes are near 00731?
The closest are 00780 (4.7 mi), 00730 (5.7 mi), 00624 (6.9 mi), 00732 (7 mi) and 00733 (7 mi).
Is 00731 a PO Box ZIP code?
00731 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “00731 ZIP Code — Ponce, Puerto Rico (Ponce Municipio).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/00731
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/00731.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.