http://www.investopedia.com/articles/forex/042415/10-cities-leading-bitcoin-adoption.asp
Want to pay for pay for dinner in bitcoins? Try Ramen Underground in San Francisco. Buy groceries with bitcoins? You can do it at Spar in Arnhem, the Netherlands. In this article, we identify cities that are at the forefront of embracing the virtual currency.
Several different metrics were used in making the list, including the number of bitcoin merchants in the city, the number of bitcoin ATMs, and the population size relative to bitcoin activity. Bitcoin maps like the collaborative coinmap.org allow you to view current bitcoin accepting businesses by city or country. Similarly, CoinDesk’s bitcoin ATM map shows the locations of bitcoin ATMs across the world.
Here are the 10 leading cities, starting with the strongest bitcoin presence:
6. Zurich, Switzerland. The largest city in Switzerland and a leading financial center, Zurich has 64 merchants accepting bitcoin and two ATMs serving a population of 366,000.