re: What American cities are trending up?

Those referencing the carolinas are dead on. I live in Greenville and the median home price has risen 18 % in the past year, and the job market and housing industry are flying here. We bought for 3 years ago at 210 and sold for 245 the day we put our house on the market.
Greenville is booming, and to a little lesser extent Charlotte, Charleston and Columbia.
Raleigh is getting an influx of tech jobs still and is growing.
Pittsburgh is going well.
Des Moines is also supposed to be growing