Hi! I'm not familiar of how the Deaf Community are like in Seattle. Although, I have couple of friends living there. According to them, it seems that its relatively good there. I've heard of positive things from them.
Indianapolis has a good Deaf Community size and I attend the church there too. The church has a good number of deafies going there. Austin, TX is another place where there's a large Deaf Community. You could check them out.