What city is ZIP code 00931?

00931 is a San Juan, Puerto Rico ZIP code. Rio Piedras is also accepted as the city name.

What county is 00931 in?

ZIP code 00931 is in San Juan Municipio, Puerto Rico.

What time zone is ZIP code 00931 in?

00931 is in the Atlantic Time zone (America/Puerto_Rico).

What area code is 00931?

Phone numbers in ZIP code 00931 use area codes 787 and 939.

Can I use 00931 for a street address?

No. 00931 is only for PO Boxes. Street addresses in San Juan use 00901, 00907, 00909.

What ZIP codes are near 00931?

The nearest ZIP codes to 00931 are 00902 (San Juan, 0 miles), 00908 (San Juan, 0 miles), 00914 (San Juan, 0 miles) and 00916 (San Juan, 0 miles).

ZIP code 00931

Where is ZIP code 00931?

San Juan, Puerto Rico

San Juan Municipio · PO Box only ZIP code

ZIP code 00931 belongs to San Juan, Puerto Rico in San Juan Municipio. 00931 is a PO Box only ZIP code: it is used for post office boxes at the San Juan 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 00902 (San Juan, 0 mi north), 00908 (San Juan, 0 mi north) and 00914 (San Juan, 0 mi north).

ZIP code	00931
Type	PO Box only (no street delivery)
Status	Active
City	San Juan
Also accepted	Rio Piedras
State	Puerto Rico (PR)
County	San Juan Municipio
Time zone	Atlantic Time · now
Area codes	787, 939
Coordinates	18.4683, -66.1061 map
3-digit prefix	009

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 00931

ZIP code	City	Distance	Type
00902	San Juan, PR	0 mi N	PO Box only
00908	San Juan, PR	0 mi N	PO Box only
00914	San Juan, PR	0 mi N	PO Box only
00916	San Juan, PR	0 mi N	PO Box only
00919	San Juan, PR	0 mi N	PO Box only
00922	San Juan, PR	0 mi N	PO Box only
00928	San Juan, PR	0 mi N	PO Box only
00929	San Juan, PR	0 mi N	PO Box only
00933	San Juan, PR	0 mi N	PO Box only
00935	San Juan, PR	0 mi N	Unique
00936	San Juan, PR	0 mi N	PO Box only
00937	San Juan, PR	0 mi N	PO Box only

Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 00931 or measure the distance to another ZIP code.

How to address mail to 00931

JANE SMITH
PO BOX 123
SAN JUAN PR 00931

Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts RIO PIEDRAS as the city name for 00931. Adding the 4-digit ZIP+4 code (00931-XXXX) helps mail sort faster but isn’t required.

Other ZIP codes in San Juan, PR

All San Juan ZIP codes with population and income →

Questions

What city is ZIP code 00931?: 00931 is a San Juan, Puerto Rico ZIP code. Rio Piedras is also accepted as the city name.
What county is 00931 in?: ZIP code 00931 is in San Juan Municipio, Puerto Rico.
What time zone is ZIP code 00931 in?: 00931 is in the Atlantic Time zone (America/Puerto_Rico).
What area code is 00931?: Phone numbers in ZIP code 00931 use area codes 787 and 939.
Can I use 00931 for a street address?: No. 00931 is only for PO Boxes. Street addresses in San Juan use 00901, 00907, 00909.
What ZIP codes are near 00931?: The nearest ZIP codes to 00931 are 00902 (San Juan, 0 miles), 00908 (San Juan, 0 miles), 00914 (San Juan, 0 miles) and 00916 (San Juan, 0 miles).