There's 3 smaller daughter-libraries in nearby villages. I'd say 20 minutes walk to the nearest library for everybody in the whole gmina is realistic. Less if you include school libraries (but they suck).

I had no idea how many books, checked right now and apparently it's 32 000. It's not really serving 500 people, it's got 1100 regular readers. Which means people are going there from other villages.

It also has all the multimedia stuff, audiobooks, internet access, printers, etc.