| Language | Population | Bloc | Family | Cluster | Band | |
|---|---|---|---|---|---|---|
| ● Lithuanian | 2,835,890 | Indo-European | Baltic | |||
| ● Latvian, Standard | 1,432,710 | Indo-European | Baltic | Eastern Baltic | ||
| ● Silesian | 786,000 | Indo-European | Baltic | |||
| ● Latgalian | 205,923 | Indo-European | Baltic | Eastern Baltic | ||
| ● Slavomolisano | 1,003 | Indo-European | Baltic | |||
| ● Latunde | 100 | Indo-European | Baltic | Eastern Baltic |