There are 14 US Post Offices in Ramsey County serving a total of 420,593 residents equating to 30,042 residents per post office. It's estimated that approximately 671,313 packages are handled across the 14 county post offices annually. Ramsey County is a county located in the U.S. state of Minnesota. As of the 2010 census, the population was 508,640, making it the second-most populous county in Minnesota. Its county seat is St. Paul, which is also Minnesota's state capital. The county was founded in 1849 and is named for Alexander Ramsey (W), the first governor of the Minnesota Territory. Ramsey County is included in the Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area. It is the smallest and most densely populated county in Minnesota, as well as one of the most densely populated counties in the United States."