A dry county is a region of the country that has voted together to enforce prohibition on the county level. Reasons given for having such a county-wide law include: elimination of drunk driving, community health, and one less cause of moral dissolution. Since prohibition is forbidden on the national and state level by the Twenty-First Amendment, this is the best that prohibitionists can currently attain through legal channels. Kansas and Arkansas are among the states with the most dry counties. The opposite of a dry county is a "wet county".
As of 2012, there are more than 200 completely or nearly completely dry counties in the United States - nearly 10% of all the counties in the nation. In addition, there are many "moist" counties that also place restrictions on the sale of alcohol (such as allowing beer and wine sales only but not liquor sales).