What city is ZIP code 00721?

00721 is a Palmer, Puerto Rico ZIP code. Rio Grande is also accepted as the city name.

What county is 00721 in?

ZIP code 00721 is in Guaynabo Municipio, Puerto Rico.

What time zone is ZIP code 00721 in?

00721 is in the Atlantic Time zone (America/Puerto_Rico).

What area code is 00721?

Phone numbers in ZIP code 00721 use area codes 787 and 939.

Can I use 00721 for a street address?

No. 00721 is only for PO Boxes. Street addresses in Palmer use another ZIP code.

What ZIP codes are near 00721?

The nearest ZIP codes to 00721 are 00969 (Guaynabo, 2.9 miles), 00971 (Guaynabo, 3 miles), 00926 (San Juan, 3.3 miles) and 00703 (Aguas Buenas, 4.2 miles).

ZIP code 00721

Where is ZIP code 00721?

Palmer, Puerto Rico

Guaynabo Municipio · PO Box only ZIP code

ZIP code 00721 belongs to Palmer, Puerto Rico in Guaynabo Municipio. 00721 is a PO Box only ZIP code: it is used for post office boxes at the Palmer post office, not for street addresses. It is in the Atlantic Time zone and uses area codes 787 and 939. The closest ZIP codes are 00969 (Guaynabo, 2.9 mi northwest), 00971 (Guaynabo, 3 mi northwest) and 00926 (San Juan, 3.3 mi north).

ZIP code	00721
Type	PO Box only (no street delivery)
Status	Active
City	Palmer
Also accepted	Rio Grande
State	Puerto Rico (PR)
County	Guaynabo Municipio
Time zone	Atlantic Time · now
Area codes	787, 939
Coordinates	18.3018, -66.08 map
3-digit prefix	007

The Census Bureau doesn’t publish population figures for po box only ZIP codes because nobody lives at a PO Box or a single organization’s address. For figures about the area, see the nearby standard ZIP codes below.

ZIP codes near 00721

ZIP code	City	Distance	Type
00969	Guaynabo, PR	2.9 mi NW	Standard
00971	Guaynabo, PR	3 mi NW	Standard
00926	San Juan, PR	3.3 mi N	Standard
00703	Aguas Buenas, PR	4.2 mi SW	Standard
00970	Guaynabo, PR	4.4 mi NW	PO Box only
00726	Caguas, PR	5 mi SE	PO Box only
00927	San Juan, PR	6 mi N	Standard
00977	Trujillo Alto, PR	6.1 mi NE	PO Box only
00727	Caguas, PR	6.1 mi S	Standard
00921	San Juan, PR	6.2 mi N	Standard
00956	Bayamon, PR	6.3 mi W	Standard
00976	Trujillo Alto, PR	6.4 mi E	Standard

Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 00721 or measure the distance to another ZIP code.

How to address mail to 00721

JANE SMITH
PO BOX 123
PALMER PR 00721

Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts RIO GRANDE as the city name for 00721. Adding the 4-digit ZIP+4 code (00721-XXXX) helps mail sort faster but isn’t required.

Questions

What city is ZIP code 00721?: 00721 is a Palmer, Puerto Rico ZIP code. Rio Grande is also accepted as the city name.
What county is 00721 in?: ZIP code 00721 is in Guaynabo Municipio, Puerto Rico.
What time zone is ZIP code 00721 in?: 00721 is in the Atlantic Time zone (America/Puerto_Rico).
What area code is 00721?: Phone numbers in ZIP code 00721 use area codes 787 and 939.
Can I use 00721 for a street address?: No. 00721 is only for PO Boxes. Street addresses in Palmer use another ZIP code.
What ZIP codes are near 00721?: The nearest ZIP codes to 00721 are 00969 (Guaynabo, 2.9 miles), 00971 (Guaynabo, 3 miles), 00926 (San Juan, 3.3 miles) and 00703 (Aguas Buenas, 4.2 miles).