International Speaker Numbers according to EGIDS (Ethnologue / Glottolog)

Overall Speaker Number	Source
467 000	/

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
Upper Silesian (60 000), Lower Silesian (22 900)	https://endangeredlanguages.com/language-search-list?field_elp_country=All&field_region=All&field_speaker_number_range=All&search_api_fulltext=Silesian&sort_by=search_api_relevance&sort_order=DESC

National Speaker Numbers

Country	Language	National Speaker Number	Bases for Calculation	Year	Source
Poland	Silesian	467 000	Users	2021

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
Upper Silesian (Vulnerable), Lower Silesian (Vulnerable)	https://endangeredlanguages.com/language-search-list?field_elp_country=All&field_region=All&field_speaker_number_range=All&search_api_fulltext=Silesian&sort_by=search_api_relevance&sort_order=DESC

National Endangerment according to EGIDS (Ethnologue / Glottolog)

Country	Language	Endangerment Level	Source
Poland	Silesian	5* (Developing)

Non-ECRML in

Poland