I'm currently living in a small town in Pennsylvania (< 5,000 people) so the library is pretty humble. We moved here from a Midwest city of about 150,000 though and they have an awesome library system with a main branch that was built a few years ago at a cost of more than $10M USD and a circulation of more than 1.5M books and periodicals, plus piles of CDs and videos including a surprising number of prog titles in both categories.
They also have a dozen branch libraries scattered around the city and suburbs, a Bookmobile program and a program that delivers books to shut-ins and families with small children. They even designed the main branch building to be homeless-friendly, which isn't as good as actually helping people not be homeless but shows some thought at least.
I really miss that place