The census for the following states were lost: Georgia, Kentucky, New Jersey, Tennessee, and Virginia.

Original census returns for Georgia, Kentucky, Mississippi, New Jersey, Tennessee, and Virginia were lost over the years.

[3] No microdata from the 1800 population census are available, but aggregate data for small areas, together with compatible cartographic boundary files, can be downloaded from the National Historical Geographic Information System.

^ a: At the time of the 1800 census, the territory donated to form the District of Columbia was still being administered by the states of Maryland and Virginia.

The state of Maryland included the population of the District under its control within its own return.