ZIP Codes ...
While some people have used a ZIP code to identify a community, the purpose of the ZIP code was to make mail delivery more efficient by grouping addresses together. Although the ZIP Code doesn't specifically identify a town like Dauphin Island, it does identify addresses that are in (or near) Dauphin Island. It's important to remember that the boundaries of a ZIP Code are defined by the needs of the USPS and can be changed, re-assigned or overlapped with other ZIP Codes.
The ZIP code for Dauphin Island: 36528<3>
Referenced GNIS Records ...
GNIS ID #117086 (Name of Record: Dauphin Island)
Class: populated place
A place or area having clustered or scattered buildings and a permanent population (such as a city, settlement, town or village). The boundaries may or may not coincide with the perceived population.
A 'populated place' record may have a corresponding 'census' or 'civil' record. The information contained in the 'populated place' record applies only to the class and should not be confused with either the 'census' and 'civil' classes.
Map Name: Little Dauphin Island
Lat: 30.2554811 Lon: -88.1097217 [Map]
Elev: 2 ft.
GNIS ID #2406357 (Name of Record: Town of Dauphin Island)
A political division formed for administrative purposes (such as a borough, county, incorporated place, parish, town or township).
A 'civil' record may have a corresponding 'census' or 'populated place' record. The information contained in the 'civil' record applies only to the class and should not be confused with either the 'census' and 'populated place' classes.
Map Name: Heron Bay
Lat: 30.2564749 Lon: -88.211348 [Map]
Elev: 0 ft.
Referenced FIPS Records ...
FIPS Code: 01/19744 (Place Name: Dauphin Island)
County: Mobile (FIPS State/County: 01/097)
Identifies an incorporated place (ie- Dauphin Island) that does not serve as a primary county division - or in other words, it is included in and is part of a primary county division (ie- Mobile County).
GSA Code: 865
MRF Code: 467
MSA Code: 5160