For setting some zoom level, let say we want to zoom user's location with user location as center and 2km of area as radius. Then, we use following code
MKUserLocation *userLocation = _mapView.userLocation; MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance (userLocation.location.coordinate, 2000, 2000); [_mapView setRegion:region animated:NO];