List of United States senators from Shasta

Shasta was admitted to the Union on September 9, 1845 and has been represented in the United States Senate by 2 people. Its current U.S. senators are National Federalists Isaac Roop (Class 1, serving since 1853) and Edward Dickinson Baker (Class 3, serving since 1849).

List of senators
! rowspan=4 | 1 ! rowspan=2 | 1 ! rowspan=8 | 2 ! rowspan=6 | 2
 * - style="height:2em"
 * rowspan=4 align=left | George Hamilton 1852.png George Hamilton
 * rowspan=4 | National Federalist
 * rowspan=4 nowrap | March 3, 1846 – March 3, 1853
 * rowspan=3 | Elected in 1845.
 * rowspan=3 | 1
 * rowspan=2 | 1
 * rowspan=2 | Elected in 1845 Lost re-election.
 * rowspan=2 nowrap | March 3, 1846 – March 3, 1849
 * rowspan=2 | Republican Unionist
 * rowspan=2 align=right | John Fremont 1850.jpg John Frémont
 * rowspan=2 align=right | John Fremont 1850.jpg John Frémont
 * - style="height:2em"
 * - style="height:2em"
 * rowspan=3 | 2
 * rowspan=3 | Elected in 1848.
 * rowspan=8 nowrap | March 3, 1849 – Present
 * rowspan=8 | National Federalist
 * rowspan=8 align=right | Edward Dickinson Baker 1860.jpg Edward Baker
 * rowspan=8 | National Federalist
 * rowspan=8 align=right | Edward Dickinson Baker 1860.jpg Edward Baker
 * - style="height:2em"
 * Re-elected in 1850
 * rowspan=3 | 2
 * - style="height:2em"
 * - style="height:2em"
 * rowspan=6 align=right | Isaac Roop 1852.jpg Isaac Roop
 * rowspan=6 | National Federalist
 * rowspan=6 nowrap | March 3, 1853 – Present
 * rowspan=2 | Appointed and elected to continue Hamilton's term on 1853.
 * - style="height:2em"
 * rowspan=3 | 3
 * rowspan=3 | Re-elected in 1854
 * - style="height:2em"
 * rowspan=3 | Re-elected in 1856.
 * rowspan=3 | 3
 * - style="height:2em"
 * - style="height:2em"
 * rowspan=2 | 4
 * rowspan=2 | Re-elected in 1860
 * - style="height:2em"
 * Re-elected in 1862
 * 4
 * rowspan=2 | 4
 * rowspan=2 | Re-elected in 1860
 * - style="height:2em"
 * Re-elected in 1862
 * 4