Independent Cities of the U.S.
An independent city is a city that does not belong to any particular county. The United States has 41 independent cities: 38 in Virginia (whose state constitution designates all municipalities incorporated as "cities" as such), plus Baltimore, Maryland; St. Louis, Missouri; and Carson City, Nevada.
avg. score: 10 of 41 (24%)
required scores: 1, 2, 3, 8, 19