There are 5 US Post Offices in Shelby County serving a total of 38,391 residents equating to 7,678 residents per post office. It's estimated that approximately 61,276 packages are handled across the 5 county post offices annually. Shelby County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 42,074. The county seat is Shelbyville. The county was founded in 1792 and named for Isaac Shelby, the first Governor of Kentucky. Shelby County is part of the Louisville/Jefferson County, KY\u2013IN Metropolitan Statistical Area. Shelby County was historically a prohibition or completely dry county, but the city of Shelbyville is now wet (i.e., allows retail alcohol sales), and the county has voted to allow restaurants outside Shelbyville to sell alcoholic beverages by the drink if they seat at least 100 patrons and derive at least 70% of their total sales from food. Today, Shelby County is officially classified by the Kentucky Office of Alcoholic Beverage Control as a moist county. Shelby County's motto is \"Good Land, Good Living, Good People\"."