San Francisco Commemorative Cover Sep 17, 1985
San Francisco is the fourth most populous city in California and the 12th most populous city in the United States, with a 2008 estimated population of 808,976. It is one of the most densely populated cities in the United States and is the financial, cultural, and transportation center of the larger San Francisco Bay Area, a region of 7.4 million people. The city is located at the northern end of the San Francisco Peninsula, with the Pacific Ocean to the west and San Francisco Bay to the north and east, and Daly City and Brisbane to the south.

