United States ZIP code system
E639434
The United States ZIP code system is a nationwide postal coding scheme used by the U.S. Postal Service to efficiently sort and deliver mail by assigning numeric codes to geographic areas.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| ZIP+4 Codes | 1 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | postal code system ⓘ |
| abbreviation | ZIP ⓘ |
| administeredBy | USPS Address Management System NERFINISHED ⓘ |
| codeRange | 00001–99950 ⓘ |
| codeType | numeric ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| doesNotAlwaysAlignWith |
city boundaries
ⓘ
county boundaries ⓘ state boundaries ⓘ |
| extendedCodeLength | 9 digits ⓘ |
| extendedFormatName | ZIP+4 NERFINISHED ⓘ |
| firstDigitMeaning | broad geographic region ⓘ |
| firstThreeDigitsMeaning | sectional center facility area ⓘ |
| fullName | Zone Improvement Plan NERFINISHED ⓘ |
| geographicCoverage |
50 U.S. states
ⓘ
District of Columbia NERFINISHED ⓘ U.S. military mail system ⓘ U.S. territories NERFINISHED ⓘ freely associated states ⓘ |
| hasComponent |
delivery segment code
ⓘ
postal zone code ⓘ sectional center facility code ⓘ |
| implementationStartDate | 1963-07-01 ⓘ |
| introducedBy | United States Postal Service NERFINISHED ⓘ |
| introducedInYear | 1963 ⓘ |
| lastTwoDigitsMeaning | local post office or delivery area ⓘ |
| mandatoryUseStartYear | 1967 ⓘ |
| operator | United States Postal Service NERFINISHED ⓘ |
| plus4Meaning | specific segment such as block, building, or high-volume receiver ⓘ |
| primaryPurpose |
mail delivery routing
ⓘ
mail sorting ⓘ |
| relatedSystem |
PO Box-only ZIP codes
ⓘ
ZIP+4 ⓘ military ZIP codes ⓘ unique ZIP codes ⓘ |
| specialAllocation |
federal government agencies
ⓘ
large-volume mail recipients ⓘ military APO/FPO/DPO addresses ⓘ post office boxes ⓘ |
| standardCodeLength | 5 digits ⓘ |
| standardizedBy | USPS Publication 28 NERFINISHED ⓘ |
| usedFor |
address validation
ⓘ
automated mail processing ⓘ bulk mail discounts ⓘ demographic analysis ⓘ market segmentation ⓘ service area definition ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
ZIP+4 Codes