The 6th United States Congress was the 6th meeting of the legislative branch of the United States federal government, consisting of the Senate and the House of Representatives. It initially met at Congress Hall in Philadelphia, Pennsylvania and then was the first congress to meet in the new Capitol Building in Washington, D.C.. Its term was from March 4, 1799, to March 4, 1801, during the last two years of John Adams's presidency. It was the last Congress of the 18th century and the first to convene in the 19th. The apportionment of seats in House of Representatives was based on the 1790 United States census. Both chambers had a Federalist majority. This was the last Congress in which the Federalist Party controlled the presidency or either chamber of 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.
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This list is arranged by chamber, then by state. Senators are listed by class, and representatives are listed by district.
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 re-election in 1802; Class 2 meant their term began in this Congress, requiring re-election in 1804; and Class 3 meant their term ended with this Congress, requiring re-election in 1800.
The names of members of the House of Representatives elected statewide on the general ticket or otherwise at-large, are preceded by an "At-large," and the names of those elected from districts, whether plural or single member, are preceded by their district numbers.
The count below reflects changes from the beginning of the first session of this Congress
There were 7 resignations and 1 vacancy at the beginning of Congress. The Federalists had a 1-seat net loss and the Democratic-Republicans had a 2-seat net gain.
There were 6 resignations and 3 deaths. The Federalists had a 4-seat net loss and the Democratic-Republicans had a 3-seat net gain.
Lists of committees and their party leaders.