12. Arnold, MO
Median home price: $119,600*
Median family income: $68,165
Located just south of St. Louis, Arnold began a major redevelopment campaign about four years ago. In that time, the city has seen many vacant properties replaced by national retailers such as Lowe's, PetSmart and Wal-Mart. Last year, Jefferson College unveiled a new Arnold campus twice the size of the one it replaced.
The town's park system covers about 400 acres and offers three swimming pools and a fishing lake. Three-bedroom homes here average about $205,000. --B.B.
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Last updated July 18 2008: 12:35 PM ET
RSS * Median based on fewer than 50 home sales in the area.
