| Demographic Table for Western European LCTLs | |||||
| Name of Language | Country | Mother Tongue (L1) Speakers | Most Recent Year of Cited Data | Current Usage & Socio-cultural Importance | |
| Alemannisch | Switzerland | 4,215,000 | 1990 | ||
| Austria | 3,000,000 | 1991 | |||
| Lichtenstein | 29,000 | n.d. | |||
| France | 1,500,000 | 1988 | |||
| Basque | France | 76,200 | 1991 | ||
| Spain | 580,000 | 1991 | |||
| Breton | France | 500,000 1,200,000 (L2) | 1989 | ||
| Catalan-Valencian-Balear | Spain | 6,472,828 | 1996 | official | |
| France | 100,000 | 1996 | |||
| Italy | 20,000 | 1996 | |||
| Corsican | France | 281,000 | 1993 | ||
| Danish | Denmark | 5,000,000 | 1980 | national | |
| Greenland | 7,800 | n.d. | |||
| Germany | 50,000 | 1976 | |||
| Dutch | Netherlands | 13,400,000 | 1976 | national | |
| Belgium | 4,620,150 | 1990 | |||
| France | 80,000 | n.d. | |||
| Emiliano-Romagnolo | Italy | 3,531,780 | 1987 | ||
| San Marino | 20,112 | 1993 | |||
| Finnish | Finland | 4,700,000 | 1993 | national | |
| Norway | 6,500 | 1998 | |||
| Sweden | 270,000 | 1997 | |||
| Franco-Provencal | France | 77,000 | n.d. | ||
| Italy | 70,000 | 1991 | |||
| Switzerland | 7,000 | 1998 | |||
| Frisian, Western | Netherlands | 700,000 | 1976 | official | |
| Gaelic, Irish | Ireland | 260,000 | 1983 | national | |
| Galician | Spain | 3,173,400 | 1986 | official | |
| Portugal | 15,000 | 1994 | |||
| Gascon | France | 250,000 | 1990 | ||
| Spain | 3,814 | 1991 | |||
| Greek | Greece | 9,859,850 | 1986 | national | |
| Italy | 225,000 | 1987 | |||
| Turkey | 4,000 | 1993 | |||
| Cyprus | 580,000 | 1995 | |||
| Icelandic | Iceland | 230,000 | 1980 | national | |
| Inuktitut, Greenlandic | Greenland | 40,000 | 1990 | national | |
| Denmark | 7,000 | 1990 | |||
| Italian | Italy | 55,000,000 | n.d. | national | |
| France | 1,000,000 | 1977 | |||
| San Marino | 20,000 | n.d. | |||
| Switzerland | 195,000 | 1998 | |||
| Ligurian | Italy | 1,853,578 | 1976 | ||
| Finland | 6,000 | 1993 | |||
| Monaco | 5,100 | 1988 | |||
| Lombard | Italy | 8,671,210 | 1976 | ||
| Luxembourgeois (Letzeburgesch) | Luxembourg | 250,000 | 1998 | ||
| Belgium | 36,000 | 1998 | |||
| Maltese | Malta | 300,000 | 1975 | national | |
| Napoletano-Calabrese | Italy | 7,047,399 | 1976 | ||
| Norwegian (Bokmaal & Nynorsk) | Norway | 4,250,000 | 1991 | national | |
| Picard | Belgium | no est. | |||
| Piemontese | Italy | 3,000,000 | 1976 | ||
| Portuguese | Portugal | 10,000,000 | national | ||
| France | 750,000 | ||||
| Provencal | France | 250,000 | 1990 | ||
| Monaco | 4,500 | 1988 | |||
| Italy | 100,000 | 1990 | |||
| Romansch | Switzerland | 40,000 | 1990 | official | |
| All Sardinian languages | 1,500,010 | 1977 | |||
| Saxon, Low | Germany | 10,000,000 (L2) | 1996 | ||
| Saxon, Upper | Germany | 2,000,000 | 1998 | ||
| Scots | United Kingdom | 100,000 | 1999 | ||
| Serbo-Croatian | Italy | 3,500 | 1987 | official | |
| Turkey | 20,000 | 1980 | |||
| Austria | 103,000 | 1991 | |||
| Sicilian | Italy | 4,680,715 | 1976 | ||
| Skane | Sweden | 1,500,000 | 1998 | ||
| Swedish | Sweden | 7,825,000 | 1986 | national | |
| Finland | 296,000 | 1997 | |||
| Turkish | Greece | 128,380 | 1976 | ||
| Cyprus | 177,000 | 1995 | |||
| Venetian | Italy | 2,109,502 | 1976 | ||
| Vlaams | Belgium | 1,070,000 | 1998 | ||
| France | 10,000 | 1993 | |||
| Netherlands | 220,000 | 1998 | |||
| Welsh | United Kingdom | 508,098 | 1991 | official | |