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 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 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 in which Abraham Lincoln served.
July 1, 1847: United States issued its first postage stampsJanuary 24, 1848: Gold found at Sutter's Mill, beginning the California Gold RushJanuary 31, 1848: Washington Monument establishedJuly 19, 1848: Seneca Falls ConventionNovember 7, 1848: U.S. presidential election, 1848: Whig Zachary Taylor defeated Lewis Cass in the first US presidential election held in every state on the same day.1846–1848: Mexican-American WarMarch 3, 1849: United States Department of the Interior established, sess. 2, ch. 108, 9 Stat. 395March 3, 1849: Gold Coinage Act, sess. 2, ch. 109, 9 Stat. 397February 2, 1848: Treaty of Guadalupe Hidalgo signed, ending the Mexican–American War and ceding to the United States virtually all of what is today the southwest United States.States admitted and territories established
May 29, 1848: Wisconsin admitted as the 30th U.S. state, sess. 1, ch. 50, 9 Stat. 235August 14, 1848: Oregon Territory was formed from territory ceded by Great Britain and others.March 3, 1849: Minnesota Territory formed from the Wisconsin Territory, sess. 2, ch. 121, 9 Stat. 403During this congress, two Senate seats was added for the new state of Wisconsin.
During this congress, two House seats were added for the new state of Wisconsin.
President: George M. Dallas (D)President pro tempore: David R. Atchison (D)Speaker: Robert C. Winthrop (W)This list is arranged by chamber, then by state. Senators are listed in order of seniority, and Representatives are listed by district.
Skip to House of Representatives, belowThe names of members of the House of Representatives are preceded by their district numbers.
The count below reflects changes from the beginning of the first session of this Congress.
Replacements: 11Democrats (D): 4 seat net gainWhigs (W): no net changeDeaths: 5Resignations: 6Interim appointments: 7Seats of newly admitted states: 4Replacements: 10Democrats (D): no net changeWhigs (W): no net changeDeaths: 7Resignations: 0Contested election: 1Seats of newly admitted states: 2Total seats with changes: 12Lists of committees and their party leaders.
AgricultureAudit and Control the Contingent Expenses of the SenateClaimsCommerceDistributing Public Revenue Among the States (Select)District of ColumbiaExpedition of John C. Fremont (Select)FinanceForeign RelationsIndian AffairsJudiciaryManufacturesMemorial of Certain Cherokee Claimants (Select)Military AffairsMilitiaMonuments to Deceased Senators (Select)Naval AffairsOregon Railroad (Select)Ordnance and War Ships (Select)Patents and the Patent OfficePensionsPost Office and Post RoadsPrintingPrivate Land ClaimsPublic Buildings and GroundsPublic LandsRetired List for the Army and the Navy (Select)RetrenchmentSeventh Census (Select)Revolutionary ClaimsRivers and Harbors Convention in Chicago (Select)Roads and CanalsTariff Bill of 1828 (Special)Tariff Regulation (Select)TerritoriesWholeAccountsAgricultureClaimsCommerceDistrict of ColumbiaElectionsEngravingExpenditures in the Navy DepartmentExpenditures in the Post Office DepartmentExpenditures in the State DepartmentExpenditures in the Treasury DepartmentExpenditures in the War DepartmentExpenditures on Public BuildingsForeign AffairsIndian AffairsInvalid PensionsManufacturesMileageMilitary AffairsMilitiaNaval AffairsPatentsPost Office and Post RoadsPublic Buildings and GroundsPublic ExpendituresPublic LandsRevisal and Unfinished BusinessRevolutionary ClaimsRoads and CanalsRules (Select)Standards of Official ConductTerritoriesWays and MeansWholeEnrolled BillsLibrarian of Congress: John Silva MeehanChaplain: Henry Slicer (Methodist)Secretary: Asbury DickensSergeant at Arms: Robert BealeChaplain Ralph Gurley (Presbyterian)Clerk: Thomas J. CampbellDoorkeeper: Robert E. HornerPostmaster: John M. JohnsonSergeant at Arms: Nathan Sergeant 
