Regional Codes ...
For statistical purposes, the US Census Bureau has divided the country into four Regions. Pennock Island is located in Region #4 (the West Region).
In turn, the US Census Bureau has further divided each Region into Divisions. Pennock Island is located in Division #9 (the Pacific Division).
The Office of Management and Budget (OMB) has created ten Federal Regions. Pennock Island is located in Region X (Region 10).
Referenced GNIS Records ...
GNIS ID #1896161 (Name of Record: Pennock 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.
County: Ketchikan Gateway
Map Name: Ketchikan B-5
Lat: 55.3277778 Lon: -131.6291667 [Map]
Referenced FIPS Records ...
FIPS Code: 02/59980 (Place Name: Pennock Island)
County: Ketchikan Gateway (FIPS State/County: 02/130)
Identifies a populated place (in this case, Pennock Island) located wholly or substantially outside the boundaries of an incorporated place or CDP (Census Designated Place) but whose name has not been verified as authoritative by the U.S. Geological Survey (USGS).
GSA Code: 2033