Home código postal Dominican Republic
Dominican Republic código postal validator
How the código postal format works
- Format
- 5 digits
- Example
- 10101
Things to watch for
- Format-only check — does not confirm the código postal actually exists
- Always exactly 5 digits with no separators
- The code sits before the city name on the same address line, e.g. 10101 Santo Domingo, rather than after it
^[0-9]{5}$A Dominican código postal is the 5-digit code the Instituto Postal Dominicano (INPOSDOM) uses to route mail — for example 10101 for a Santo Domingo address. The capital’s own province carries an unusually wide dedicated range, spanning from the low 10700s up past 11900, which reflects how much of the country’s mail volume concentrates around the capital. Anyone validating a Dominican shipping address, checkout form, or spreadsheet of customer records needs the código postal to be the right length and shape before it’s trusted.
Because the code is a bare 5-digit run with no separator, a code truncated to 4 digits or padded to 6 can slip through unnoticed without a length check at the point of entry.
How this validator works
This tool checks that the input is exactly 5 digits with no letters, spaces, or hyphens, entirely in your browser — nothing is sent to a server, and there’s no signup.
What a pass doesn’t tell you
A código postal carries no check digit, so confirming it’s 5 digits long is the most a client-side tool can do — not that INPOSDOM has assigned it to a real address. Confirming that requires the Dominican Republic’s own postal code lookup.
Scope: this page and tool cover código postal format validation only — not address lookup, province matching, or confirming a code is currently in use.
código postal FAQ
How many digits does a Dominican postal code have?
Always 5 — for example 10101 for a Santo Domingo address. Santo Domingo Province's codes span from around 10700 up to 11999, giving the capital a wide dedicated range.
Where does the postal code go in a Dominican address?
It sits directly before the city or town name on the same line — 10101 SANTO DOMINGO — rather than after it or on its own line, following the same convention used across most of the Spanish-speaking Americas.
Does a correctly formatted código postal mean it actually exists?
No. This tool only confirms the string is 5 digits — it doesn't check it against INPOSDOM's actual assignment list. Confirming a code is real requires the Dominican Republic's own postal code lookup.