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No. 25 Biggest Rent Hike: Bethesda-Frederick-Gaithersburg, Md.

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Lower Inventory, Higher Prices No. 25 Biggest Rent Hike: Bethesda-Frederick-Gaithersburg, Md. No. 24 Biggest Rent Hike: Chicago-Naperville-Joliet, Ill. No. 23 Biggest Rent Hike: Naples-Marco Island, Fla. No. 22 Biggest Rent Hike: Oxnard-Thousand Oaks-Ventura, Calif. No. 21 Biggest Rent Hike: Durham-Chapel Hill, N.C. No. 20 Biggest Rent Hike: Mobile, Ala. No. 19 Biggest Rent Hike: San Francisco-San Mateo-Redwood City, Calif. No. 18 Biggest Rent Hike: New York-Wayne-White Plains, N.Y.-N.J. No. 17 Biggest Rent Hike: Austin-Round Rock, Tex. No. 16 Biggest Rent Hike: Wilmington, Del.-Md.-N.J. No. 15 Biggest Rent Hike: Albuquerque, N.M. No. 14 Biggest Rent Hike: Boulder, Colo. No. 13 Biggest Rent Hike: Jackson, Miss. No. 12 Biggest Rent Hike: Boston-Cambridge-Quincy, Mass.-N.H. No. 11 Biggest Rent Hike: West Palm Beach-Boca Raton-Boynton Beach, Fla. No. 10 Biggest Rent Hike: Raleigh-Cary, N.C. No. 9 Biggest Rent Hike: Washington-Arlington-Alexandria, D.C.-Va.-Md.-W.V. No. 8 Biggest Rent Hike: Denver-Aurora, Colo. No. 7 Biggest Rent Hike: Tacoma, Wash. No. 6 Biggest Rent Hike: Nashville-Davidson-Murfreesboro, Tenn. No. 5 Biggest Rent Hike: San Jose-Sunnyvale-Santa Clara, Calif. No. 4 Biggest Rent Hike: Portland-Vancouver-Beaverton, Ore.-Wash. No. 3 Biggest Rent Hike: Savannah, Ga. No. 2 Biggest Rent Hike: Chattanooga, Tenn.-Ga. No. 1 Biggest Rent Hike: Greenville, S.C.

No. 25 Biggest Rent Hike: Bethesda-Frederick-Gaithersburg, Md.

Annual increase: 5.6%
Average monthly rent: $1,497
Vacancy rate: 4.6% (5.1% in 2009)
Average concession: -4%

Vacancies in the Bethesda area—where employment is relatively strong—fell below the 5 percent equilibrium rate, indicating a tight rental market. (A vacancy rate of 5 percent is considered "equilibrium" and indicates supply and demand are about equal.) Data from AXIOMetrics show that some renters in Montgomery County, which includes Gaithersburg, Rockville, and Takoma Park, saw a particularly steep hike of about 13 percent. The metro unemployment rate increased slightly to an annual average of 5.7 percent, or 36,240 people, in 2010, compared to 5.5 percent in 2009, according to the Maryland Labor, Licensing, and Regulation Dept.

* Source for rent, vacancy, and concession data on all slides: AXIOMetrics