Koh Ker is located in a sparsely populated jungle area in the province of Preah Vihear (Srayang/Srayong commune, Kulen district), about 120 km northeast of Siem Reap. There are no cities in the immediate vicinity, only small, rural villages.
The main ones are: Koh Ker village (also Srayong Cheung): small and simple, with a few houses on stilts and a school, about 1 km from the main temples (Prasat Thom).
Local families live here, with options for homestays such as the Koh Ker Jungle Lodge.
Srayang / Sra Yong / Seyiong (variants of the same name): a larger village about 10 km further south.
Here you will find simple Khmer cafes/restaurants, basic guesthouses, a small market, and options for overnight stays or meals.
The region is rural, with agriculture and some tourist activity (homestays, local snacks).
Several hundred residents live in the buffer zones around the site.
Further afield lie remote villages such as Tmat Boey in the nearby nature reserve, but these are less directly connected.
In short: quiet, authentic rural settlements that primarily serve as a base for visitors to the temples.