For the latest U.S. Census Bureau county population estimates as of July 1, 2007 with popular comparison tables www.census.gov/popest/estimates.php.

Population: 373,363
Land Area: 1,124.3 sq. miles
Altitude: 454 - 1,265 ft.
Average Rainfall: 34.2 inches/year
January Temperature: 35° F average minimum
July Temperature: 97° F average maximum
Growing season: 258 days

City population estimates are from 2003.

Round Rock (77,946, partly in Travis County) varied manufacturing, tourism, and distribution center, St. David's Round Rock Medical Center, Texas Baptist Children's Home.

Cedar Park (41,482) varied retail center including nearby Lakeline Mall and Austin Community College.

Georgetown (34,815) county seat, manufacturing, tourism, mining, agriculture, St. David's Georgetown Hospital, Southwestern University, Sun City.

Taylor (14,204) agribusiness publishing center, varied manufacturing including cottonseed and meat processing, Johns Community Hospital, Temple College and TaylorCNET.

Leander (13,846)

Hutto (17,000)

Pflugerville

Other towns include: Andice (25), Bartlett (1,685, partly in Bell County), Coupland (135), Florence (1,110), Granger (1,307), Jarrell (410), Liberty Hill (1,485), Thrall (813), Walburg (250) and Weir (640).

There are several large Municipal Utility Districts in Williamson County including:

Anderson Mill: Anderson Mill Municipal Utility District (MUD)

Brushy Creek: http://www.brushycreekmud.com/

Fern Bluff: Fern Bluff Municipal Utility District