Cayman Islands Address Format
Mail is delivered to private letter boxes at post offices, so a P.O. Box line is required; mail with only a street address is undeliverable by the Cayman Islands Postal Service. The postcode sits on the same line as the official island name (Grand Cayman, Cayman Brac or Little Cayman), separated by two spaces, and the country name goes last in upper case.
Standard format
Postcode rules
| Field name | Postcode |
|---|---|
| Format | AAN-NNNN (N = digit, A = letter) |
| Example | KY1-1103 |
| Pattern | ^KY[1-3]-\d{4}$ |
| Rule | KY + island code (1 Grand Cayman, 2 Cayman Brac, 3 Little Cayman) + 4-digit section code identifying the post office box group. Introduced in 2006; KY must be upper case. |
Fields used in Cayman Islands
| State / region | Yes — "Island" locally |
|---|---|
| Street address | Yes |
| P.O. Box | Yes |
FAQ
What is the Postcode format in Cayman Islands?
The format is AAN-NNNN (N = digit, A = letter), for example KY1-1103. KY + island code (1 Grand Cayman, 2 Cayman Brac, 3 Little Cayman) + 4-digit section code identifying the post office box group. Introduced in 2006; KY must be upper case.
How do you write an address in Cayman Islands?
Cayman Islands addresses are written from the smallest unit to the largest. Mail is delivered to private letter boxes at post offices, so a P.O. Box line is required; mail with only a street address is undeliverable by the Cayman Islands Postal Service. The postcode sits on the same line as the official island name (Grand Cayman, Cayman Brac or Little Cayman), separated by two spaces, and the country name goes last in upper case.
Does Cayman Islands use postal codes?
Yes. Cayman Islands uses the Postcode in the format AAN-NNNN (example: KY1-1103). KY + island code (1 Grand Cayman, 2 Cayman Brac, 3 Little Cayman) + 4-digit section code identifying the post office box group. Introduced in 2006; KY must be upper case.
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Sources
- https://www.caymanpost.gov.ky/
- https://www.upu.int/UPU/media/upu/PostalEntitiesFiles/addressingUnit/cymEn.pdf