44 of 100
44. Oro Valley, Ariz.
Population: 35,750
Pro: It's a quick trip to the Tucson International Airport
Con: Most urban cultural amenities are six miles away in Tucson

The population of Oro Valley has increased by 25% since 2000, fueled in part by a strongly pro-business local government. The start-up business rate isn't bad either, with 83 licensed in 2007 - or two for every 1,000 inhabitants.

Oro Valley is also home to an emerging tech and biotech industry: Sanofi-Aventis, a large pharmaceutical company, just completed a new R&D center. The University of Arizona, a public research university, provides a strong talent pool. Located in nearby Tucson, the University of Arizona is also home to the McGuire Center for Entrepreneurship.

Despite all this activity, Oro Valley offers a calm and family-friendly environment. Nearby attractions include the southern-most ski area in the U.S. and Kitt Peak National Observatory, home to the world's largest solar telescope. -Malika Zouhali-Worrall

Interactive map: Oro Valley, Ariz.
Homes for sale Find homes for sale in Oro Valley, Ariz.

NEXT: 45. Sioux Falls, S.D.

Last updated July 02 2008: 11:16 AM ET
More Galleries
6 designers shaking up fashion These designers are changing the way we dress, accessorize and shop, from custom made-to-fit dresses to smart jewelry that's actually stylish. More
8 must-have travel apps Whether you've got wanderlust or an airline grievance, here are some apps to pack onto your phone. More
Secrets to success from Smalltown USA Utah State professor Michael Glauser cycled 4,000 miles this summer, visiting 100 entrepreneurs across the country. Here's a snapshot of how they grew their businesses. More

Special Offer
Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.