Cincy's airport is in Covington, KY. Hence, the baggage tags and airline tickets say "CVG". I flew in there once and did a double take when I got off the plane and saw a sign that said "Welcome to Northern Kentucky" and in a brief moment of panic wondered if I mistakenly flew into Louisville. But then I saw the smaller print beneath it which said "Greater Cincinnati International Airport". Cincy's belt highway (I-275) briefly traverses a corner or Indiana.
We always think of Texas as place with open plains as far as the eye can see but six of the nation's twenty-two largest cities are in Texas. I follow a lot of political blogs and people say Texas is slowly turning purple. Frankly, I've never believed it but with all these growing urban areas, that may be the case after all.
Looking at the numbers and trends in that wikipedia link, I could see Houston passing Chicago and taking #3 after the 2020 census with Philadelphia likely to fall to #7 or even #8 after 2030.