Regional Codes ...
For statistical purposes, the US Census Bureau has divided the country into four Regions. Chatham is located in Region #4 (the West Region).
In turn, the US Census Bureau has further divided each Region into Divisions. Chatham is located in Division #9 (the Pacific Division).
The Office of Management and Budget (OMB) has created ten Federal Regions. Chatham is located in Region X (Region 10).
Referenced GNIS Records ...
GNIS ID #1420994 (Name of Record: Chatham)
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: Sitka C-3
Lat: 57.5152778 Lon: -134.9436111 [Map]
Elev: 0 ft.
Referenced FIPS Records ...
FIPS Code: 02/12470 (Place Name: Chatham)
County: Sitka (FIPS State/County: 02/220)
Identifies a populated place (ie- Chatham) which is wholly or substantially located within the boundaries of an incorporated place with a different name. The Part of Code identifies the incorporated place.