The 30th 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 4, 1849, during the last two years of the administration of President James K. Polk. The apportionment of seats in the House of Representatives was based on the 1840 United States census. The Senate had a Democratic majority, and the House had a Whig majority. It was the only Congress in which Abraham Lincoln served.

Major events

Major legislation

Treaty

States admitted and territories established

Party summary

Senate

During this congress, two Senate seats were added for the new state of Wisconsin.

House of Representatives

During this congress, two House seats were added for the new state of Wisconsin.

Leadership

Senate

House of Representatives

Members

This list is arranged by chamber, then by state. Senators are listed by class and representatives are listed by district.

Senate

Alabama

Arkansas

Connecticut

Delaware

Florida

Georgia

Illinois

Indiana

Iowa

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Mississippi

Missouri

New Hampshire

New Jersey

New York

North Carolina

Ohio

Pennsylvania

Rhode Island

South Carolina

Tennessee

Texas

Vermont

Virginia

Wisconsin

[Senators' party membership by state at the opening of the 30th Congress in March 1847. The green stripes in New Hampshire represent independent Democrat John P. Hale. The senators from Iowa and Wisconsin were not seated until later in the Congress.

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House of Representatives

The names of members of the House of Representatives are preceded by their district numbers.

Alabama

Arkansas

Connecticut

Delaware

Florida

Georgia

Illinois

Indiana

Iowa

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Mississippi

Missouri

New Hampshire

New Jersey

New York

North Carolina

Ohio

Pennsylvania

Rhode Island

South Carolina

Tennessee

Texas

Vermont

Virginia

Wisconsin

Non-voting members

Changes in membership

The count below reflects changes from the beginning of the first session of this Congress.

Senate

House of Representatives

Committees

Lists of committees and their party leaders.

Senate

House of Representatives

Joint committees

Employees

Senate

House of Representatives