For those who are US-centric, note that MD is not Maryland, it's Moldova!
These results are aggregates of measurements made at Speedtest.net. These and other results have been published by Ookla (the company that created Speedtest.net and Pingtest.net). See Net Index for more results.
It's interesting that many of these cities are in eastern Europe, e.g. Latvia, Moldova, Romania, Bulgaria and the Ukraine. Indeed, three of the top 15 cities are in Latvia. I don't have current data on Latvia but I wonder if it benefits from the same relatively free access to rights-of-way that is present in Bucharest and several other parts of the world.