Actually, Bridgeport is the most populated city in CT with 144,229. New Haven is second with 129,779, and Hartford(the State Capitol) is third, with 124,775. Ironically, even though BPT has the most people, it has the smallest land area of all three of CT's largest cities: only 16 square miles, making it very compact.
However, 3511 is correct. Some neighborhoods are wastelands. A lot of vacant lots around the city, as well as vacant buildings. The East Side in particular is case in point: Steel Point, to start, is located just below I-95 on the Southern tip of the East Side. Here, there's nothing but grass and dirt for about six blocks, surrounded by water on three sides. There was that one lone vacant house on the corner of Stratford Ave. and Pembroke St., but I believe that it's gone now.
Just above Steel Point is the Lower East Side, populated by a mix of building types, including several vacant lots, some now populated by 1-2-frame P/D's, where the infamous Father Panik Village project once stood. This was Engine 2's(now closed) neck of the woods. Then, right above where Father Panik once stood, there's the large vacant industrial complex, Remington Arms, which was the site of numerous fires in the past, and is in the process of being torn down. Then, if you keep going North, above Boston Ave., right by the current quarters of Engine 10/Ladder 10, there's the old General Electric complex: 13 5-story brick interconnected buildings, all vacant. To the West and Southwest, the rest of the East Side is a multitude of 3-frame M/D's, some vacants, and scattered commercial, mostly along E. Main St. And that's just the East Side. The East End and the West Side aren't too bad. There's a lot of vacant factories along I-95 and Railroad Ave. on the West Side, but some have been disappearing within the last ten years. If you look at Google(Street View) or Bing Maps(3D View) of the Park City, you get a good idea of what I'm talking about.