Trouble Storing URL in NSURL Variable - objective-c

Question

At the end of this method, "address" (NSURL variable) returns nil, even though "countyName" returns #"Alameda". What am I doing wrong?
-(void) getDataUrl {
if ([countyName isEqual: #"Alameda"]) {
NSURL * fileURL = [[NSURL alloc] initWithString:#"http://www.myservername.com/alameda.php"];
self.address = fileURL;
}
if ([countyName isEqual: #"Napa"]) {
NSURL * fileURL = [[NSURL alloc] initWithString:#"http://www.myservername.com/napa.php"];
self.address = fileURL;
}
if ([countyName isEqual: #"San Luis Obispo"]) {
NSURL * fileURL = [[NSURL alloc] initWithString:#"http://www.myservername.com/sanluisobispo.php"];
self.address = fileURL;
}
}

Answer 1

The solution here was to create a plist containing an array of dictionaries. Each dictionary held the name of a county and a url for the php script for that county. The plist was used to populate a tableview, and then the selected row was pushed to another tableview using the variable "countyName". "countyName" held the county name and the url. I then used countyName in my retrieveData method like this:
NSURL *url = [NSURL URLWithString:[countyName valueForKey:#"weburl"]];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLResponse *response = nil;
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];
jsonArray = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
Thanks to everyone for taking the time to respond.