The Thirtieth United States Congress
was a meeting of the legislative branch of the United States
federal government, consisting of the United States Senate
and the United States House of Representatives
. It met in Washington, D.C.
from March 4 1847
to March 3 1849
, during the last two years of the administration of U.S. President James K. Polk
The apportionment of seats in this House of Representatives was based on the Sixth Census of the United States in 1840. The Senate had a Democratic majority, and the House had a Whig majority.
It was the only Congress that Abraham Lincoln served in.
Dates of sessions
March 4 1847
- March 3 1849
Previous congress: 29th Congress
Next congress: 31st Congress
was newly admitted to the Union and first represented as a state in this Congress.
The count below identifies party affiliations at the beginning of the first session of this Congress, and includes members from vacancies and newly admitted states, when they were first seated. Changes resulting from subsequent replacements are shown below in the "Changes in membership" section.
- House of Representatives
- Main article: Events of 1847; Events of 1848; Events of 1849
- Main article: List of United States federal legislation in the 30th Congress
This list is arranged by chamber, then by state. Senators are listed in order of seniority, and Representatives are listed by district.
- See also: 30th United States Congress - political parties
- See also: 30th United States Congress - State Delegations
- See also: United States House elections, 1846
Senators were elected by the state legislatures every two years, with one-third beginning new six year terms with each Congress. Preceding the names in the list below are Senate class numbers
, which indicate the cycle of their election. In this Congress, Class 1 meant their term began in the last Congress, requiring reelection in 1850; Class 2 meant their term began with this Congress, requiring reelection in 1852; and Class 3 meant their term ended with this Congress, requiring reelection in 1848.
- See also: United States Senators
- See also: United States Congressional Delegations by state
House of Representatives
The names of members of the House of Representatives elected statewide on the general ticket
or otherwise at-large,
are preceded by an "A/L," and the names of those elected from districts, whether plural or single member, are preceded by their district numbers.
Many of the congressional district numbers are linked to articles describing the district itself. Since the boundaries of the districts have changed often and substantially, the linked article may only describe the district as it exists today, and not as it was at the time of this Congress.
- See also: Members of the United States House of Representatives
- ''See also: United States Congressional Delegations by state
Changes in membership
The count below reflects changes from the beginning of the first session of this Congress.
- replacements: 11
- deaths: 5
- resignations: 6
- interim appointments: 2
- seats of newly admitted states: 4
- Total seats with changes:
- House of Representatives
- replacements: 10
- deaths: 7
- resignations: 0
- contested election: 1
- seats of newly admitted states: 2
- Total seats with changes: 12
- Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
- Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.