I think you *may* have a problem with this. Usually, getting this type of information is really buggy - mainly because it's gathered from the location of the server that the end user is getting his connection from. The server is not always in the same area as the end user. You can obtain the IP address and try to get a location form that - you may end up closer, but it still won't get it right many times. For instance, I've gone to several sites that indicate where I am by looking up my IP address, and every time they put me in New Hampshire. I live in Connecticut. If I want to go to New Hampshire, I have to drive about 5 or 6 hours. (When I lived in West Virginia, it always put me in Columbus, OH - a solid 2.5 hour drive away.) I've *never* had someone write a script that can pinpoint where I am located and get it right. The only time it's been correct is when I have my GPS turned on with my iPhone ;)
You'd be much better off writing something that provides a dropdown list of states that the end user can choose from, and once submitted, shows who they need to contact. Much more reliable and easier to code.