The 105th United States Congress began on January 3, 1997. There were fourteen new senators (six Democrats, eight Republicans) and 72 new representatives (42 Democrats, 30 Republicans) at the start of the first session. Additionally, nine representatives (five Democrats, four Republicans) took office on various dates in order to fill vacancies during the 105th Congress before it ended on January 3, 1999.
| District | Representative | Switched party | Prior background | Birth year | ||
|---|---|---|---|---|---|---|
| (R) | Yes | Businessman | 1944 | |||
| (R) | Yes | Judge | 1965 | |||
| (D) | No | Domestic Policy Council | 1942 | |||
| (D) | No | State Senator | 1947 | |||
| (R) | No | U.S. Attorney | 1950 | |||
| (D) | Yes | Campaign chair | 1951 | |||
| (D) | Yes | Professor | 1934 | |||
| (D) | No | State Board of Equalization | 1954 | |||
| (R) | No | State Assemblyman | 1957 | |||
| (D) | Yes | Financial analyst | 1960 | |||
| (D) | No | State Representative | 1957 | |||
| (R) | No | State Senator | 1962 | |||
| (D) | Yes | State Senator | 1948 | |||
| (D) | No | State Representative | 1945 | |||
| (D) | No | State Representative | 1957 | |||
| (D) | No | State Senator | 1961 | |||
| (D) | Yes | State Representative | 1956 | |||
| (D) | No | County Commissioner | 1941 | |||
| (R) | Yes | Army Lieutenant colonel | 1958 | |||
| (R) | No | State Senator | 1951 | |||
| (D) | No | State Senator | 1938 | |||
| (D) | Yes | State Senator | 1934 | |||
| (R) | No | State Senator | 1954 | |||
| (R) | No | State Representative | 1949 | |||
| (R) | Yes | State Representative | 1948 | |||
| (R) | Yes | Air Force Reserve Command | 1941 | |||
| (D) | Yes | State Representative | 1960 | |||
| (D) | Yes | Mayor of Portland | 1945 | |||
| (D) | Yes | Congressional staffer | 1959 | |||
| (D) | Yes | Attorney | 1951 | |||
| (D) | No | District attorney | 1941 | |||
| (D) | Yes | State Senator | 1950 | |||
| (D) | No | State Representative | 1945 | |||
| (R) | Yes | Businessman | 1963 | |||
| (R) | No | Secretary of State of Missouri | 1950 | |||
| (R) | Yes | Prosecutor | 1958 | |||
| (R) | Yes | Surety | 1946 | |||
| (R) | No | State Assemblyman | 1944 | |||
| (R) | No | Mechanical engineer | 1964 | |||
| (D) | Yes | State Assemblyman | 1937 | |||
| (D) | No | Mayor of Englewood | 1952 | |||
| (R) | No | Chosen Freeholder | 1960 | |||
| (D) | Yes | Licensed practical nurse | 1944 | |||
| (D) | Yes | Superintendent of Public Instruction | 1941 | |||
| (D) | Yes | Professor | 1940 | |||
| (D) | No | Lawyer | 1956 | |||
| (D) | Yes | U.S. Representative | 1941 | |||
| (D) | Yes | State Senator | 1946 | |||
| (R) | Yes | Air National Guard | 1938 | |||
| (R) | No | U.S. Representative | 1931 | |||
| (D) | Yes | State Representative | 1939 | |||
| (R) | No | State Senator | 1938 | |||
| (R) | No | State Representative | 1939 | |||
| (D) | No | Lieutenant Governor of Rhode Island | 1948 | |||
| (R) | Yes | Legislative aide | 1961 | |||
| (R) | No | State Representative | 1936 | |||
| (D) | No | Congressional staffer | 1970 | |||
| (D) | No | County judge | 1952 | |||
| (D) | No | State Senator | 1946 | |||
| (R) | Yes | Marketing manager | 1955 | |||
| (R) | No | State Representative | 1955 | |||
| (D) | Yes | Tax assessor | 1945 | |||
| (R) | Yes | Mayor of Fort Worth | 1943 | |||
| (R) | No | U.S. Representative | 1935 | |||
| (D) | No | State Board of Education | 1940 | |||
| (D) | No | U.S. Border Patrol | 1944 | |||
| (R) | No | Explosives manufacturer | 1946 | |||
| (R) | Yes | Venture capitalist | 1950 | |||
| (D) | No | State Senator | 1946 | |||
| (D) | Yes | State Senator | 1965 | |||
| (D) | Yes | District attorney | 1963 | |||
| (D) | Yes | Broadcaster | 1943 |
| District | Representative | Took office | Switched party | Prior background | Birth year | ||
|---|---|---|---|---|---|---|---|
| (R) | No | City Councilor | 1965 | ||||
| (D) | No | State Representative | 1946 | ||||
| (R) | Yes | Chaplain | 1955 | ||||
| (D) | No | State Assemblyman | 1953 | ||||
| (D) | No | Nurse | 1938 | ||||
| (R) | No | Waitress | 1961 | ||||
| (D) | No | State Senator | 1946 | ||||
| (D) | No | Professor | 1945 | ||||
| (R) | No | Air Force Captain | 1960 |