Xytex sperm bank is out of Atlanta and Augusta GA. But you don't have to be close to use them... we used them and live in MI.
What you need is a friendly doctor and/or midwife to sign a release for you to have the sperm delivered to your home for self insemination. We had a great midwife and our GP was also very supportive of our process.
Northwest Andrology is the only bank I know that will allow you to have sperm shipped to your house without a doctor signing off on it.
Come join the women in the Queer Conceptions
thread for advice on all things related to queer baby making.