The 1820 United States Census was the fourth national census conducted in the United States, taking place from August 7 to September 1, 1820. It aimed to count the population and gather demographic information, including age, sex, and race. This census was significant as it provided data that helped shape political representation and resource allocation. The results of the 1820 census showed a population of approximately 9.6 million people, reflecting a growing nation. It also highlighted the increasing number of free African Americans and the continued presence of enslaved individuals, which would later influence discussions around slavery and state representation in Congress.