Regional Codes ...
For statistical purposes, the US Census Bureau has divided the country into four Regions. Twin Hills is located in Region #4 (the West Region).
In turn, the US Census Bureau has further divided each Region into Divisions. Twin Hills is located in Division #9 (the Pacific Division).
The Office of Management and Budget (OMB) has created ten Federal Regions. Twin Hills is located in Region X (Region 10).
Referenced GNIS Records ...
GNIS ID #1416737 (Name of Record: Twin Hills)
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: Dillingham (CA)
Map Name: Goodnews Bay A-4
Lat: 59.0791667 Lon: -160.275 [Map]
Referenced FIPS Records ...
FIPS Code: 02/79780 (Place Name: Twin Hills)
County: Dillingham (CA) (FIPS State/County: 02/070)
GSA Code: 2666
MRF Code: 3370