Bexar County's BiblioTech is the first all-digital library in the United States. BiblioTech was established in September 2013 and built on the Southside of San Antonio to bridge the digital divide in Bexar County. The county is almost 1,200-square-miles and one of the fastest growing counties in the United States. The library allows access to a digital collection of books, periodicals, and additional assets 24 hours a day. This model represents significant savings for the county. For instance, the Southside location of the library total cost was $2.3 million; by comparison, the city of Austin opened a new library at a cost of $120 million, plus the operating cost of maintaining paper books.