Best Zip: 77019

Location: Houston (River Oaks neighborhood)
Metro: Houston-Sugarland-Baytown, Tex.
Annual listing price change: +14%
Average listing price: $1.1 million
Days on the market: 177 days

Houston's River Oaks community, one of the wealthiest in the nation, has seen an increase in the average listing price for a home largely because the mix of properties for sale has shifted to the higher end as those properties are taking longer to sell. Houston's economy has been one of the nation's strongest, but with the decline of oil prices and consumer spending, the once-strong housing market is also slowing.