The west of the Far Eastern Federal District holds a piece of the Siberian(2) Platform. Most of this consists of the Central Siberian Plateau(3) at 300 to 750 meters.
East and south of the Central Siberian PlatformThe majority are Russian speakers, chiefly dwelling in the river valleys, along the trans-Siberian Railway and in ocean ports. In northern Sakha, the probable majority speak Yakut(4) as their first language. The only other numerous group are Ukrainian speakers, about one in twelve inhabitants, who follow the same pattern except for being more concentrated on the northeast coast. Numerous small indinginous minorities exist making up most of the remaining five percent. More than 19 in 20 people are Russian Orthodox Christian--at least in background; the degree of actual observance, given state hostility to religion, is not a reliable indicator of belief.
(1) Rossija or Rossija in strict transliteration from Russian.
(2) Sibirskay or Sibirskaja in transliterated Russian.
(3) Ploskogorye in transliterated Russian.
(4) Sakha is their name for themselves. It means people of the edge.