The Sunnyvale Public Library is a mid-sized public library serving the city of Sunnyvale, California, USA. The Library is located in the Sunnyvale Civic Center area, at 665 W. Olive Avenue. The Library is open seven days a week, from 10 a.m. to 9 p.m. Monday through Thursday, 10 a.m. to 6 p.m. Friday and Saturday, and 12 p.m. to 6 p.m. Sunday. The Library's primary phone number is (408) 730-7300.