International Speaker Numbers according to EGIDS (Ethnologue / Glottolog)

Overall Speaker Number	Source
No known L1 speaker	/

International Speaker Numbers according to UNESCO

Overall Speaker Number	Source
Site under maintenance (will be updated)	https://en.wal.unesco.org/world-atlas-languages

International Speaker Numbers according to ELCAT (Endangered Languages Project)

Overall Speaker Number	Source
Not listed	https://endangeredlanguages.com/

National Speaker Numbers

Country	Language	National Speaker Number	Bases for Calculation	Year	Source
Lithuania	Sudovian	No known L1 speakers	/	/
Poland	Sudovian	No known L1 speakers	Users	/

International Endangerment according to UNESCO

Endangerment Level	Source
Site under maintenance (will be updated)	https://en.wal.unesco.org/world-atlas-languages

International Endangerment according to ELCAT (Endangered Languages Project)

Endangerment Level	Source
Not listed	https://endangeredlanguages.com/

National Endangerment according to EGIDS (Ethnologue / Glottolog)

Country	Language	Endangerment Level	Source
Lithuania	Sudovian	10 (Extinct)
Poland	Sudovian	10 (Extinct)

Non-ECRML in

Lithuania

Poland