How America Has Changed Since the First Census in 1790

1800: New territories to the Northwest

• U.S. resident population: 5,308,483
• Number of official states: 16
• Median age of population: Not available for this year
• Immigrants obtaining legal resident status: Not available for this year
• Biggest cities: New York, NY (Population: 60,515), Philadelphia, PA (41,220), Baltimore, MD (26,514)

The second-ever census was authorized to include new territories and states northwest of the Mississippi Territory and Ohio River. That year, 5.3 million people were recorded as living in the U.S.—893,602 of whom were enslaved.