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### Overview

### Also in this Section:

                          - 2010 Overview
                          - 2000 Overview
                          - 1990 Overview
                          - 1980 Overview
                          - 1970 Overview
                          - 1960 Overview
                          - 1950 Overview
                          - 1940 Overview
                          - 1930 Overview
                          - 1920 Overview
                          - 1910 Overview
                          - 1900 Overview
                          - 1890 Overview
                          - 1880 Overview
                          - 1870 Overview
                          - 1860 Overview
                          - 1850 Overview
                          - 1840 Overview
                          - 1830 Overview
                          - 1820 Overview
                          - 1810 Overview
                          - 1800 Overview
                          - 1790 Overview

## 1800 Overview

### 1800

John Adams was President of the United Stateson Census Day, August 4, 1800.

#### Authorizing Legislation

An act of February 28, 1800 authorized the second census of the United States, which was to include the states and territories northwest of the Ohio River and Mississippi Territory. The census was to conclude within nine calendar months of its start.

The guidelines for the 1800 enumeration followed those of the first census, with only minor alterations in the law.  John Marshall, secretary of state in 1800, was the nominal head of census operations.  By early 1801, however, Marshall was chief justice of the Supreme Court.  James Madison, his successor as secretary of state, oversaw the final tabulations and reported population totals to Congress and the president.

#### Enumeration

The questionnaire provided space to separately tally free white males and females in several age categories: under 10, 10 but under 15, 16 but under 25, 25 but under 45, and over 45.  Indians, slaves, and free blacks were listed in single categories undivided into age groups.

#### Further Information

                        - A wide variety of historical statistics from this and other decades is available in  **Historical Statistics of the United States: Colonial Times to 1970** .  It is available as a  PDF  [74.4MB] or 2-part ZIP file:  Part I  [52.2MB] |  Part II  [66.1MB].
                        - Reports and statistics from the 1800 Census
                        - History and Growth of the United States Census: 1790-1890  [PDF 117MB], by Carroll D. Wright and William C. Hunt.
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