Round Rock is on Interstate Highway 35 in south central Williamson County, sixteen miles north of downtown Austin. Round Rock is located just 15 minutes from the culture, bustle and "bigness" of the State Capitol.  We're nestled comfortably among the Highland Lakes. The beach is a short drive away.  San Antonio is just around a "Texas corner."

With Lake Travis, Town Lake, and Lake Austin merely 30 minutes away, water sports and boating fun of all kinds can be had. Having fun in Round Rock is easy with more than 300 days of sunshine per year. Golf courses are well maintained and offer novice as well as expert players a lot of room to have fun and improve their game.

So why is called Round Rock? Glad you asked. You can find a part of the historic Chism Trail running through Round Rock. Cattlemen moving their cattle to market would cross Brushy Creek with their cattle.

The reason they chose to cross in this area rathar than other places along brushy creek was because of the picture below. 

 Here it is the famed ROUND ROCK of Round Rock Texas. Cattlemen would pass the word that this location was a good place to move your cattle across the creek. If you were to look closely you can still see the cattle and horse prints marking the rock. Located on a street called Chism Trail its only a short drive to the heart of Round Rock Texas.

Round Rock is one of the fastest growing and best managed cities in Texas. The city has maintained high quality of life while becoming a major center for economic development in Central Texas. The City of Round Rock is known for its award-winning master plan, park system and school district as well as for having some of the lowest crime, property tax and utility rates in Texas. Round Rock is ranked the 13th Safest City in the United States by a national survey, and has the fourth lowest crime rate among Texas cities.

Housing Cost

A single-family home in Round Rock costs about 8% less than it would in nearby Austin and offers the lowest property taxes in Central Texas. Community-driven neighborhoods include everything from starter to mid-range homes as well as lush golf course communities. Round Rock offers some of the best housing options in the area, and residents enjoy one of the lowest property tax rates in the region. Round Rock has actually lowered residential taxes while expanding services to citizens. Residents pay the lowest combined average monthly utility and tax cost in Central Texas. Average Home Price: $132,000.

Demographics

Estimated population in July 2005: 86,316. Round Rock covers 26.1 square miles.  It sits at an elevation of 735 feet above sea level.

Climate

Round Rock, TX climate is hot during summer when temperatures tend to be in the 80's and cold during winter when temperatures tend to be in the 40's.

The warmest month of the year is August with an average maximum temperature of 95.90 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 35.10 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 24 degrees Fahrenheit, and moderate during winter with an average difference of 24 degrees Fahrenheit.

The annual average precipitation at Round Rock is 32.05 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is May with an average rainfall of 4.23 Inches.

Information provided by idcide.com and city data.com