The 110th United States Congress began on January 3, 2007. There were 10 new senators (eight Democrats, one Republican, one independent) and 54 new representatives (41 Democrats, 13 Republicans) at the start of its first session. Additionally, two senators (both Republicans) and 13 representatives (nine Democrats, four Republicans) took office on various dates in order to fill vacancies during the 110th Congress before it ended on January 3, 2009.
The representatives comprise a diverse group reflecting the multiculturalism of the United States. One representative graduated with a high school class of 25; another is said to have a net worth of $50 million. Backgrounds include teachers, musicians, authors, engineers, a vice admiral, and a professional football player. Religions include Christianity, Buddhism, Judaism, and Islam (none claims to be atheist or agnostic). When taking office, ages ranged from 33 to 66, placing the class mostly in the baby boomer and generation X categories. Of this group 12 are female.
| State | Image | Senator | Took office | Party change | Prior background | Birth year | ||
|---|---|---|---|---|---|---|---|---|
| Wyoming | (R) | No | Wyoming Senate | 1952 | ||||
| Mississippi | (R) | No | U.S. House of Representatives Mississippi Senate | 1951 |
| District | Image | Representative | Party change | Prior background | Birth year | ||
|---|---|---|---|---|---|---|---|
| Harry Mitchell (D) | Yes | Mayor of Tempe | 1940 | ||||
| Gabby Giffords (D) | Yes | State Senator | 1970 | ||||
| Jerry McNerney (D) | Yes | Engineer | 1951 | ||||
| Kevin McCarthy (R) | No | State Assemblyman | 1965 | ||||
| Doug Lamborn (R) | No | State Senator | 1954 | ||||
| Ed Perlmutter (D) | Yes | State Senator | 1953 | ||||
| Joe Courtney (D) | Yes | State Representative | 1953 | ||||
| Chris Murphy (D) | Yes | State Senator | 1973 | ||||
| Gus Bilirakis (R) | No | State Representative | 1963 | ||||
| Kathy Castor (D) | No | Hillsborough County Commissioner | 1966 | ||||
| Vern Buchanan (R) | No | Business owner | 1951 | ||||
| Tim Mahoney (D) | Yes | COO of vFinance | 1956 | ||||
| Ron Klein (D) | Yes | State Senator | 1957 | ||||
| Hank Johnson (D) | No | County Commissioner | 1954 | ||||
| Mazie Hirono (D) | No | Lieutenant Governor | 1947 | ||||
| Bill Sali (R) | No | State Representative | 1954 | ||||
| Peter Roskam (R) | No | State Senator | 1961 | ||||
| Phil Hare (D) | No | Union President | 1949 | ||||
| Joe Donnelly (D) | Yes | Lawyer | 1955 | ||||
| Brad Ellsworth (D) | Yes | Vanderburgh County Sheriff | 1958 | ||||
| Baron Hill (D) | Yes | former U.S. Representative | 1953 | ||||
| Bruce Braley (D) | Yes | Lawyer | 1957 | ||||
| David Loebsack (D) | Yes | Political Science Professor | 1952 | ||||
| Nancy Boyda (D) | Yes | Chemist | 1955 | ||||
| John Yarmuth (D) | Yes | Publisher | 1947 | ||||
| John Sarbanes (D) | No | Lawyer | 1962 | ||||
| Tim Walberg (R) | No | State Representative | 1951 | ||||
| Tim Walz (D) | Yes | Teacher | 1964 | ||||
| Keith Ellison (D) | No | State Representative | 1963 | ||||
| Michele Bachmann (R) | No | State Senator | 1956 | ||||
| Adrian Smith (R) | No | State Legislator | 1970 | ||||
| Dean Heller (R) | No | Secretary of State | 1960 | ||||
| Carol Shea-Porter (D) | Yes | Social Worker | 1954 | ||||
| Paul Hodes (D) | Yes | Assistant State Attorney General | 1951 | ||||
| Yvette D. Clarke (D) | No | New York City Council member | 1964 | ||||
| John Hall (D) | Yes | Musician | 1948 | ||||
| Kirsten Gillibrand (D) | Yes | Lawyer | 1966 | ||||
| Michael Arcuri (D) | Yes | Oneida County District Attorney | 1959 | ||||
| Heath Shuler (D) | Yes | Real estate professional and former NFL player | 1971 | ||||
| Jim Jordan (R) | No | State Senator | 1964 | ||||
| Charlie Wilson (D) | No | State Senator | 1943 | ||||
| Betty Sutton (D) | No | State Representative | 1963 | ||||
| Zack Space (D) | Yes | City Law Director | 1961 | ||||
| Mary Fallin (R) | No | Lieutenant Governor | 1954 | ||||
| Jason Altmire (D) | Yes | Healthcare Executive | 1968 | ||||
| Joe Sestak (D) | Yes | Navy vice admiral | 1951 | ||||
| Patrick Murphy (D) | Yes | Professor | 1973 | ||||
| Chris Carney (D) | Yes | Associate Professor | 1959 | ||||
| David Davis (R) | No | State Representative | 1959 | ||||
| Steve Cohen (D) | No | State Senator | 1949 | ||||
| Nick Lampson (D) | Yes | former U.S. Representative | 1945 | ||||
| Ciro Rodriguez (D) | Yes | former U.S. Representative | 1946 | ||||
| Peter Welch (D) | Yes/No[1] | State Senator | 1947 | ||||
| Steve Kagen (D) | Yes | Medical Doctor | 1949 |
| District | Representative | Took office | Party change | Prior background | Birth year | |||
|---|---|---|---|---|---|---|---|---|
| (R) | No | Medical Doctor | 1946 | |||||
| (D) | No | State Assemblywoman | 1962 | |||||
| (D) | No | College dean | 1946 | |||||
| (R) | No | State Representative | 1956 | |||||
| (R) | No | State Delegate | 1959 | |||||
| (D) | Yes | Physicist | 1955 | |||||
| (D) | No | City Councilor | 1974 | |||||
| (D) | Yes | County Clerk | 1958 | |||||
| (R) | No | State Senator | 1965 | |||||
| (D) | Yes | State Representative | 1964 | |||||
| (D) | No | State Senator | 1950 | |||||
| (D) | No | Community activist | 1958 | |||||
| (D) | No | Mayor of Warrensville Heights | 1952 |