1 From Louisville to Green Bay, the most frequently used aircraft is an Embraer ERJ 135/ERJ 140/ERJ 145. 2  On average, flights from Louisville to Green Bay are cancelled 0.6% of the time. 3  4.8 percent of flights from Louisville to Green Bay are delayed.
I agree that big cities are pegged at around the 2 million mark. I think of medium cities as being between 500,000 and 1.5 million. Small cities are less than 500,000 but more than 100,000. Anything under 100,000 is a town to me, not a city.
Of the 100 most populous cities, the following had the highest population density (shown in persons/square mile) in 2010: 1  New York, N.Y.: 27,012.4. 2  San Francisco, Calif.: 17,179.2.  Jersey City, N.J.: 16,736.6.