Announce and Transmit

A Century of Congressional Apportionment

Primary Sources

Below, you will find an expandable timeline containing the primary sources that were referenced to create the Announce and Transmit timeline. Archival closures due to COVID-19 have made it difficult to procure documents showing the transmission of apportionment figures to governors.

Data

Population of States and Counties of the United States: 1790 - 1990
Apportionment and Apportionment Population Based on the 1990 Census
United States Summary: 2010 Population and Housing Unit Counts
States Ranked by Population: 2000
Twelfth Census of the United States Taken in the Year 1900, Population, Part 1

Legislation

  • 1790 Census
  • Act Providing for Apportionment following the 1790 Census (April 14, 1792)
  • 1800 Census
  • An Act Providing for Apportionment following the 1800 Census (January 14, 1802)
  • 1810 Census
  • An Act Providing for Apportionment following the 1810 Census (December 21, 1811) An Act Apportioning Seats for Maine (April 7, 1820)
  • 1820 Census
  • An Act Providing for Apportionment following the 1820 Census (March 7, 1822)
    An Act Amending 1820 Apportionment (January 14, 1823)
  • 1830 Census
  • An Act Providing for Apportionment following the 1830 Census (May 22, 1832)
  • 1840 Census
  • An Act Providing for Apportionment following the 1840 Census (June 25, 1842)
  • 1850 Census
  • Census Act of 1850 (May 23, 1850)
    An Act Amending the Census Act of 1850 (June 30, 1852)
  • 1860 Census
  • An Act Providing for Apportionment following the 1860 Census (March 4, 1862)
  • 1870 Census
  • An Act Providing for Apportionment following the 1870 Census (February 2, 1872)
    An Act Amending 1870 Apportionment (May 30, 1872)
  • 1880 Census
  • An Act Providing for Apportionment following the 1880 Census (February 25, 1882)
  • 1890 Census
  • An Act Providing for Apportionment following the 1890 Census (February 7, 1891)
  • 1900 Census
  • An Act Providing for Apportionment following the 1900 Census (January 16, 1901)
  • 1910 Census
  • An Act Fixing the Size of the House of Representatives (August 8, 1911)
  • 1929
  • Reapportionment and Census Act of 1929 (June 18, 1929)
  • 1940 Census
  • An Act Providing for Apportionment following the 1940 Census (April 25, 1940)
    An Act Setting the Apportionment Method for Future Censuses (November 15, 1941))