Places generally along the South Freeway (I-45), and south of the Ship Channel, including Clear Lake, Deer Park, Freindswood, the Hobby Area, League City, Pasadena, Santa Fe, South Houston, and Texas City.
Here's some figures (warning might be incorrect since I don't know the metro areas to well)
New York: 44 in the city but blank on the metro.
Los Angles: says 2 in the city but I don't know the metro.
Minneapolis-St. Paul: 18
San Antonio: 2
Some journalist or person on city data might be able to generate a full ranking of the metros in the next couple of weeks, but this is what I got from the few cities/metros I looked at.