Well I'm a 19 year old Lithuanian. I don't have many friends or family my age that play very well in Lithuania. Obviously there are those who are very good at chess, but you get that everywhere now. But as in most countries I think it's more the minority that are very good than the majority. For example one of my grandparents neighbours is a young boy I think he's around 9-10 now. And apparently He beats my grandad about 1/5 games. For such an age that's a good standard in my opinion, as my grandad is a good player.
It also depends on what one would class as being good. I'd consider myself to be a good player, but in no way a great one. I just classify a good player who has decent knowledge of fundamentals and decent and varied opening theory. Good forward vision, (such as seeing 5-6 moves in advance), and strong checkmating ability, rather than constantly checking the opponent hoping to get lucky etc.
Obviously I no longer live in Lithuania, but I do spend around 6 weeks every year on holiday. And from my family and friends there I no longer see it as a large cultural thing, but instead more as a game that most young boys learn at a young age at some point, but as is the case everywhere now, only few pursue it and actively play in tournaments as they get older. (as I did)
I'm going to be on holiday in around a weeks time. I'll ask around my relatives about it. Do people still play it in the workplace at all anymore, or in the army. I don't know my guess is that they don't, but I may be wrong.