YOY Increase: 23%
Blowing all the other cities out of the water is none other than Phoenix, which boasted a spectacular 23% one-year gain since February 2012.
Of course, Phoenix led the way in January as well with an even better 23.2% improvement. Its month-over-month jumps in prices have consistently been near the top of the list, too.
The main driver in this case is actually a bit different than in many other areas, though: population growth. According to AZCentral, “The Phoenix area is expected to grow by approximately 96,000 people a year for the next three decades.”