San Ramon Library Share: City of San Ramon San Ramon Library Visit Website 100 Montgomery Street San Ramon, CA 94583-4707 (925) 973-2854 (925) 866-6720 (fax) About Map About Books, videos, DVDs, computer software, music, free databases, internet access, newspapers, magazines and the largest jazz collection around. All CA residents eligible for free library card. Open 7 days a week. 973-2850 for information. What's Nearby? Distance: 5 10 15 20 25 50 mi.