No. 22: Dallas-Plano-Irving, Tex.

Matt Nager/Bloomberg

No. 22: Dallas-Plano-Irving, Tex.

Average monthly rent: $760
Annual drop: -7.4%
Q4 2009 drop: -2.1%

Home to Exxon Mobil, American Airlines, and AT&T, Dallas remains a strong metro economy. Still, a noteworthy slowdown in the rental market prompted landlords to offer concessions worth 10% during the fourth quarter. The unemployment rate was 8% in December.