This is a chronological listing, in timeline format, of the United States House of Representatives Delegations from Delaware.
The dates for the various Congress represent the range of dates they could have been in session, rather than the actual dates of the sessions. Congressional terms began on March 4 through 1933. Since 1935 they have begun on January 3. The juxtaposition of the terms with the sessions is approximate, see the footnotes for actual dates of special appointments, elections, resignations or deaths.
U.S Representatives are elected by popular vote for a two-year term, beginning January 3. Since 1831, Delaware elections have been held the first week of November of the year noted. Before 1831, elections were held in October and before 1935 all Congressional terms began March 4.
In Delaware all representatives have been elected from the state at large, rather than by district. There has always been the minimum one representative, except for the Thirteenth through Seventeenth Congress (1813-1823), when there were two representatives.