I live next to a swamp, by choice. Currently, it IS a swamp/bog combo. Skeeters there are far less than the number of skeeters back in the nice suburban neighborhood in which I previously lived. At least in the swamp, the mosquitofish and other critters (like the elephant mosquito- which eats bloodsucking types) keep the larvae in check very nicely. The water's not as stagnant as it looks in most swamps and that keeps the skeeters down. But in the neighborhoods, the mosquito truck isn't all that effective - it probably kills more predatory insects than it does mosquitos- assuming the concentration's high enough to even do that. There is a dearth of predatory insects in this environment, but unfortunately, numerous water supplies just right for the worst forms of mosquitos.
When half the people in the neighborhood won't do simple things like empty out flower pots and other junk, or when renters won't take care of their freakin' pools, a nice neighborhood is worse than any swamp. Draining swamps won't fix all those little bug breeding holes people create just by being sloppy.
Last year I had to stock one renter's unmaintained, uncovered pool with fish because his idiot landlord wouldn't take care of the problem. (It worked.) I have never encountered more mosquitos in my life than in that fool's pool, not even with all this rain and a swamp next door.