After statehood was achieved on September 9, 1850 and until 1865, California elected its congressional representatives statewide at-large — two representatives from September 11, 1850 to 1861, and 3 representatives from 1861 to 1865.
Also, from 1883 to 1885, California elected two of its six representatives to the United States House of Representatives statewide at-large.
The election was held November 13, 1849.
The 1851 election was held October 7, 1851.
For these results see 1882 United States House of Representatives elections in California.