There are 9 US Post Offices in Hopkins County serving a total of 45,844 residents equating to 5,094 residents per post office. It's estimated that approximately 73,172 packages are handled across the 9 county post offices annually. Hopkins County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 46,920. Its county seat is Madisonville. The county was formed in 1806 and named for General Samuel Hopkins, an officer in both the American Revolutionary War and War of 1812, and later a Kentucky legislator and U.S. Congressman. The Madisonville, KY Micropolitan Statistical Area includes all of Hopkins County. The topography ranges from flatlands along the broad river valleys of the Pond River, Tradewater River, and Green River, to hilly and rolling land in the southern and central parts of the county. Coal mines operate in the southern part of Hopkins County and agriculture is a mainstay in the northern part. Major crops are soybeans, corn, and tobacco. Along with coal, resources include oil and natural gas. Hopkins County ranks second in the state both in terms of total coal extracted (782 million tons) and in total coal reserves remaining (7.2 billion tons)."