First United States Census

Date: August 2, 1790 • Location: Washington, United States

The 1790 United States census, was the first United States census. It recorded the population of the whole United States as of Census Day, Monday August 2, 1790, as mandated by Article 1, Section 2, of the Constitution and applicable laws. In the first census, the population of the United States was enumerated to be 3,929,214 inhabitants.