July 2009 sales: 20
July 2010 sales: 24
Increase: 20 percent
In this city north of Boston, median home prices in July increased by 8 percent to $426,000. Year-to-date median home prices are up 4 percent over last year, while the number of sales in the same period is up 13 percent.
Pictured: The YMCA in Melrose Center.