Kumaoni is a Central Pahari language, sister to Garhwali across the watershed and continuous with the Doteli of the far-western Nepali hills across the Kali. It has no official status, no medium of instruction and no settled orthography, and most of its speakers are bilingual in Hindi from primary school onwards. Its internal divisions are named after old parganas rather than districts, because a pargana was a basin and a basin is what people married and traded within. Alongside it, and unrelated to it, the region holds a set of Tibeto-Burman languages in the high valleys and Tharu and Buksa in the terai.
Khasparjiya (Central Kumaoni)Indo-Aryan, Central Pahari
The Almora and Nainital register, and the one broadcasting, publishing and the stage settled on as standard Kumaoni.
Speakers: Roughly 2.1 million returned Kumaoni overall in the 2011 Census, certainly an undercount
KumaiyaIndo-Aryan, Central Pahari
The Champawat and Kali valley speech, from the Chand dynasty's original seat — often described as the oldest-sounding Kumaoni and the closest to Doteli across the river.
Soryali and AskotiIndo-Aryan, Central Pahari
The Soar valley around Pithoragarh and the Askot country above it, in contact with both the Rung languages upstream and Nepali speech across the Kali.
DanpuriyaIndo-Aryan, Central Pahari
The Danpur country behind Bageshwar, up towards the Pindari glacier — the variety carried by the chanchari songs, and the one closest to the Garhwali frontier.
Rung languages — Darmiya, Byangsi and ChaudangsiTibeto-Burman, West Himalayish
Spoken in Darma, Byans and Chaudans behind Dharchula by communities who ran the Tibet trade. Rangkas, the related language of the Johar valley, is no longer spoken — the Johar Shaukas shifted to Kumaoni within a few generations of taking up trade and education on the Indian side.
Speakers: A few thousand speakers each, concentrated in three valleys
Tharu and BuksaIndo-Aryan, distinct from Kumaoni
The languages of the terai communities who lived in the malarial belt before it was cleared, and who were displaced within it by post-1950s settlement.