Dianna has fallen to the 5th largest city because of New Bearden and South City. The population is 147,000 right now, a little over that.
Here's some pics-
Below, is South Dianna, where the region's best beach can be found, but also all the record labels, and tv and movie studios are located here, close to downtown, the condos, and the beach. It is not in this picture, but there is now 2 bridges that goes over the water and connects Dianna with Jellyville. All the celebs hang out in Dianna all the time. Dianna the entertainment city for the region where the dreams along with the celebrities go.
Northwest section, close to the Ciudad de Los Volcanos border. This is the nicest section in town. There is never an abandoned building here!