Thousand Oaks experiences a hot-summer Mediterranean climate or dry-summer subtropical zone climate, with hot, sunny, dry summers and mild winters with moderate rainfall. Vegetation is typical of Mediterranean environments, with chaparral and grasses on the hillsides and numerous western valley oaks. Its elevation ranges from about 500 to 900 feet (excluding the mountains and hills). The area has slightly cooler temperatures than the surrounding areas, as it receives cooler air from the ocean through various hill and mountain passes. On March 10 and 11, 2006, snow fell on the peak of Boney Mountain, the first snow to fall in the area in about 20 years. Snow also fell on Boney Peak on December 17 and 18, 2008.
| Statistic | Thousand Oaks | California | National |
| Population | 128,126 | 38,066,920 | 314,107,084 |
| Population density (sq mi) | 2,307 | 239 | 91 |
| Median age | 42.1 | 35.6 | 37.4 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 61% | 53% | 55% |
| Speak English | 77% | 56% | 79% |
| Speak Spanish | 12% | 29% | 13% |
The median home value in Thousand Oaks is $698,600. Thousand Oaks home values have gone up 4.4% over the past year and Zillow predicts they will rise 2.3% within the next year. The median list price per square foot in Thousand Oaks is $366, which is higher than the Ventura Metro average of $338. The median price of homes currently listed in Thousand Oaks is $759,000. The median rent price in Thousand Oaks is $3,200, which is higher than the Ventura Metro median of $2,700.
