The first U.S. census counted 3,929,214 people in 1790. The enumeration was conducted under the direction of Secretary of State Thomas Jefferson, with marshals collecting information in the states and designated territories.
The census followed the Constitution’s requirement for a population count to apportion seats in the House of Representatives. It recorded free people, enslaved people, and other categories defined by the law of the period. The results showed that the new nation remained relatively small and heavily concentrated along the Atlantic seaboard.
Virginia had the largest population among the states, while Delaware had the smallest. The total included 697,681 enslaved people, reflecting the census’s deeply unequal legal and social system. Native Americans outside the tax-paying population were not counted in the same way.
The 1790 total is sometimes mistakenly treated as an exact modern-style demographic count. The early census methods were less standardized than later systems, and historians have identified omissions, especially among marginalized communities.