Guam Postal Code Format
A country-level reference for how postal and ZIP codes are structured in Guam.
- Postal format
- US : NNNNN[-NNNN]
- Validation pattern
- ^[0-9]{5}([0-9]{4})?$
- Examples
- 12345, 12345-7689
Postal formats and validation patterns are country-level references. Individual delivery rules can vary by carrier and address type.