Despite of being the smallest county in Southern California, Orange County's (O.C.) population is the second largest in the state. Its total area encompasses 948 square miles, of which 791 square miles is land and 157 square miles (16.6%) is water.
Four of the county's largest cities - Anaheim, Santa Ana, Irvine, and Huntington Beach – have populations of over 200,000.
To the southwest, O.C. is bordered by the Pacific Ocean, to the north by Los Angeles County, to the southeast by San Diego County and to the northeast by the counties of San Bernardino and Riverside.
Multiple cities of Orange County are located next to the Pacific Ocean, including Huntington Beach, Newport Beach, Laguna Beach, and San Clemente.
The Santa Ana River runs through the county from northeast to southwest. This is the county's principal river, but the San Gabriel River crosses briefly into Orange County before it exits into the Pacific Ocean. Other smaller watercourses include: Aliso Creek, San Juan Creek, and Horsethief Creek.
Laguna Lakes, the county's only natural lakes, are formed by water rising up against an underground fault.
Most of county's territory include the Santa Ana Valley and the Saddleback Valley. The northwestern part of O.C. is formed by the coastal plain of the Los Angeles Basin, while the southeastern section rises into the foothills of the Santa Ana Mountains.
East of Santa Ana, the Santiago Peak, is the highest point with 5,689 feet.
Orange County has a Mediterranean type of climate, with mild winters and bright, sunny summers. During this season, the weather varies from moderate to hot – but temperatures cool down in the evenings. Winters are generally mild with little rain.
The average annual temperature for O.C. is about 70 °F. The July high is around 82 degrees while the January low is 47.
Every year, the region gets between 10 to14 inches of rain. The number of days with any measurable precipitation is generally 22.
If you move to Orange County, you will be able to enjoy at about 278 sunny days per year.