paragraph_text: San Gabriel Mission High School, the "School with a Mission," is an all-girls Catholic College Preparatory high school located on the grounds of the fourth mission of California, which was founded in 1771 by Franciscan priests and often used by Junipero Serra as his headquarters. It is located in the Roman Catholic Archdiocese of Los Angeles. Their Mission statement is:

paragraph_text: Big Pine (formerly, Bigpine) is a census-designated place (CDP) in Inyo County, California, United States. Big Pine is located approximately south-southeast of Bishop, at an elevation of . The population was 1,756 at the 2010 census, up from 1,350 at the 2000 census. The Big Pine Band of Owens Valley Paiute Shoshone Indians of the Big Pine Reservation operates their tribal headquarters from here.

paragraph_text: Touchstone Semiconductor was founded in 2010 by a group of semiconductor industry experts from Maxim Integrated Products, Linear Technology and Analog Devices. The company received $12M funding in Series A funding from Opus Capital and Khosla Ventures, the headquarters were located in Milpitas, California.

paragraph_text: Winzler & Kelly was an engineering and environmental services firm based in Santa Rosa, CA, with offices in California, Oregon, Washington, Guam, and Saipan. It was recognized as a "Best Multidiscipline A/E Services Firm to Work For" by "CE News" in 2010.

paragraph_text: Soledad is a city in Monterey County, California, United States. Soledad is located southeast of Salinas, at an elevation of 190 feet (58 m). The population was 25,738 at the 2010 census.

paragraph_text: Livermore (formerly Livermores, Livermore Ranch, and Nottingham) is a city in Alameda County, California, in the United States. With an estimated 2017 population of 89,648, Livermore is the most populous city in the Tri-Valley. Livermore is located on the eastern edge of California's San Francisco Bay Area. The incumbent Mayor of Livermore is John Marchand.

paragraph_text: Barstow is a city in San Bernardino County, California, United States. The population was 22,639 at the 2010 census. Barstow is located north of San Bernardino.

paragraph_text: Sacramento (/ ˌsækrəˈmɛntoʊ / SAK - rə - MEN - toh; Spanish: (sakɾaˈmento)) is the capital city of the U.S. state of California and the seat of Sacramento County. Located at the confluence of the Sacramento River and the American River in Northern California's Sacramento Valley, Sacramento's estimated 2018 population of 501,334 makes it the sixth - largest city in California and the 9th largest capital in the United States. Sacramento is the seat of the California Assembly, the Governor of California, and Supreme Court of California, making it the state's political center and a hub for lobbying and think tanks. Sacramento is also the cultural and economic core of the Sacramento metropolitan area, which had 2010 population of 2,414,783, making it the fifth largest in California.

paragraph_text: Trinity High School (THS) is a high school located in Weaverville, California, in Trinity County. The student population is 400, and the grades are 9-12.

paragraph_text: Fort Totten is a census-designated place (CDP) in Benson County, North Dakota, United States. The population was 1,243 at the 2010 census. Fort Totten is located within the Spirit Lake Reservation and is the site of tribal headquarters. The reservation has a total population estimated at 6,000. Although not formally incorporated as a city, Fort Totten has the largest population of any community in Benson County.

paragraph_text: Kelly is an unincorporated community in Campbell County, Virginia, United States. Kelly is located along U.S. Route 460 east-southeast of downtown Lynchburg.

paragraph_text: In - N - Out Burger is an American regional chain of fast food restaurants with locations primarily in the American Southwest and Pacific coast. It was founded in Baldwin Park, California in 1948 by Harry Snyder and Esther Snyder. The chain is currently headquartered in Irvine, California and has slowly expanded outside Southern California into the rest of California, as well as into Arizona, Nevada, Utah, Texas, and Oregon. The current owner is Lynsi Snyder, the Snyders' only grandchild.

paragraph_text: Santa Rosa (lit. Spanish for ``Saint Rose '') is a city in and the county seat of Sonoma County, in California's Wine Country. Its estimated 2016 population was 175,155. Santa Rosa is the largest city in California's Redwood Empire, Wine Country and the North Bay; the fifth most populous city in the San Francisco Bay Area after San Jose, San Francisco, Oakland, and Fremont; and the 28th most populous city in California.

paragraph_text: Wheatland is the second-largest city by population in Yuba County, California, United States. The population was 3,456 at the 2010 census, up from 2,275 at the 2000 census. Wheatland is located southeast of Marysville.

paragraph_text: Dunlap is an unincorporated community in Fresno County, California. It lies at an elevation of . It has a population of 131. It is located approximately east of Fresno. In the 1800s Dunlap was a rest stop for passengers of the stage coach and a location for a change of horses.

paragraph_text: Houston's Restaurant is an upscale American casual dining restaurant chain, owned by Hillstone Restaurant Group, whose main corporate headquarters is in Beverly Hills, California. There are 51 Hillstone locations in 13 states.

paragraph_text: Prather is an unincorporated community in Fresno County, California. It is located northeast of Fresno, at an elevation of . Prather has a population of 1,569.

paragraph_text: Manchester is a census-designated place in Mendocino County, California. It is located north of Point Arena, at an elevation of 85 feet (26 m). The population was 195 at the 2010 census.

paragraph_text: Callender is a census-designated place in San Luis Obispo County, California, United States. Callender is located along California State Route 1 south of Arroyo Grande. The population was 1,262 at the 2010 census.

paragraph_text: Headquartered in Taipei, Taiwan, Kingbright specializes in manufacturing LED-related products. Kingbright operates four production facilities in Shenzhen, China. The company has sales locations at United States, France, Germany, Taiwan, Korea, Japan, Malaysia, Hong Kong, Beijing, Shanghai, and Shenzhen. The company's North American operation is Kingbright USA, located in Los Angeles, California.

Question: what is the population of the headquarters city of Winzler & Kelly?
Answer: 175,155