If you were really in a foreign country - France, Italy, Japan - what would you do? You'd start to go out and about, and you'd start to learn the language and customs.
Right now you feel as though you might as well be in a foreign country, so do the same things. Get involved in something outside your home - something you like already. Join your church choir, the Y or a gym, a MOPS group, or volunteer at the hospital or the library. Make it something you're already interested in because you want to benefit from it no matter what other people do. Introduce yourself to the leaders; they will introduce you to others in the group.
You're feeling a little timid and insecure, but it could be that these neighbors, who seem to have it all together, are timid and insecure, too. Maybe they're wondering what this woman from, er, Montana - where did you say that was? - is like, and whether you would be nice to them if they spoke. Of course, some women never get past this, and that's where cliques come from, but you don't need absolutely everybody for a friend.
Take the initiative by smiling, by saying hello to people even if they don't respond, by doing the kind things that people do in Montana and the rest of the world. You can do those things expecting no return. If you accept yourself, one of these days (maybe a little longer than you'd prefer) some other women are going to like you. And you can write a blog about it later.