Gamers Coalition (www.gcftw.com)
This is a great community with a couple different servers and has servers for other games as well.

here are the mid-west ones i play at.

216.86.154.200:27015 GCftw.com | FF | NoScope | MidWest > Proj. Mayhem 100tic
216.86.154.199:27015 GCftw.com | FF | Stock | MidWest > Recrudescence 100tic

they are really good servers and almost always have people on.