It was formed in 2013 from the western districts of Manokwari Regency.

Geographical Location of Arfak Mountains Regency, as follows: Part North : 0º55' South Latitude; Southern Part: 1º40' South Latitude; Part West : 133º10' East Longitude; East: 134º05' East Longitude.

The altitude of the Arfak Mountains Regency is 300 – 1,800 meters above sea level.

The Arfak Mountains Regency is divided into ten districts (distrik), listed below with their areas and their populations at the 2010 Census[2] and the 2020 Census,[3] together with the official estimates as at mid 2023.

[1] The table also includes the location of the district administrative centres, the number of administrative villages (all classed as rural kampung) in each district, and its post code.