United States House of Representatives elections in California, 2004

The United States House of Representatives elections in California, 2004 was an election for California's delegation to the United States House of Representatives, which occurred as part of the general election of the House of Representatives on November 2, 2004. The districts after the 2000 census were gerrymandered to protect incumbents of both parties, so there was no change in the party balance, 33 Democrats and 20 Republicans.