List of freshman class members of the 110th United States Congress
The 110th United States Congress began on January 4, 2007. There were 10 new senators and 54 new representatives at the start of its first session.
The representatives comprise a diverse group reflecting the multiculturalism of the U.S. 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. 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.
New members at the beginning of the 110th Congress
These senators and representatives served at the beginning of the Congress on January 4, 2007.Senate
| State | Image | Senator | Party | Party change? | Prior background | Birth year |
| Maryland | Ben Cardin | Democratic | No Open Seat; Replaced Paul Sarbanes | U.S. House of Representatives | 1943 | |
| Minnesota | Amy Klobuchar | Democratic | No Open Seat; Replaced Mark Dayton | Hennepin County Attorney | 1960 | |
| Missouri | Claire McCaskill | Democratic | Yes Defeated Jim Talent | State Auditor | 1953 | |
| Montana | Jon Tester | Democratic | Yes Defeated Conrad Burns | State Senate President | 1956 | |
| Ohio | Sherrod Brown | Democratic | Yes Defeated Mike DeWine | U.S. House of Representatives | 1952 | |
| Pennsylvania | Bob Casey, Jr. | Democratic | Yes Defeated Rick Santorum | State Treasurer | 1960 | |
| Rhode Island | Sheldon Whitehouse | Democratic | Yes Defeated Lincoln Chafee | State Attorney General | 1955 | |
| Tennessee | Bob Corker | Republican | No Open Seat; Replaced Bill Frist | Mayor of Chattanooga | 1952 | |
| Vermont | Bernie Sanders | Independent | No Open Seat; Replaced Jim Jeffords | U.S. House of Representatives | 1941 | |
| Virginia | Jim Webb | Democratic | Yes Defeated George Allen | Secretary of the Navy | 1946 |
House of Representatives
| District | Representative | Seat Changed Party? | Prior background | Birth year |
| Harry Mitchell | Yes | Mayor of Tempe | 1940 | |
| Gabrielle Giffords | Yes | State Senator | 1970 | |
| Jerry McNerney | Yes | Engineer | 1951 | |
| Kevin McCarthy | No | State Assemblyman | 1965 | |
| Doug Lamborn | No | State Senator | 1954 | |
| Ed Perlmutter | Yes | State Senator | 1953 | |
| Joe Courtney | Yes | State Representative | 1953 | |
| Chris Murphy | Yes | State Senator | 1973 | |
| Gus Bilirakis | No | State Representative | 1963 | |
| Kathy Castor | No | Hillsborough County Commissioner | 1966 | |
| Vern Buchanan | No | Business owner | 1951 | |
| Tim Mahoney | Yes | COO of vFinance | 1956 | |
| Ron Klein | Yes | State Senator | 1957 | |
| Hank Johnson | No | County Commissioner | 1954 | |
| Mazie Hirono | No | Lieutenant Governor | 1947 | |
| Bill Sali | No | State Representative | 1954 | |
| Peter Roskam | No | State Senator | 1961 | |
| Phil Hare | No | Union President | 1949 | |
| Joe Donnelly | Yes | Lawyer | 1955 | |
| Brad Ellsworth | Yes | Vanderburgh County Sheriff | 1958 | |
| Baron Hill | Yes | former U.S. Representative | 1953 | |
| Bruce Braley | Yes | Lawyer | 1957 | |
| David Loebsack | Yes | Political Science Professor | 1952 | |
| Nancy Boyda | Yes | Chemist | 1955 | |
| John Yarmuth | Yes | Publisher | 1947 | |
| John Sarbanes | No | Lawyer | 1962 | |
| Tim Walberg | No | State Representative | 1951 | |
| Tim Walz | Yes | Teacher | 1964 | |
| Keith Ellison | No | State Representative | 1963 | |
| Michele Bachmann | No | State Senator | 1956 | |
| Adrian Smith | No | State Legislator | 1970 | |
| Dean Heller | No | Secretary of State | 1960 | |
| Carol Shea-Porter | Yes | Social Worker | 1954 | |
| Paul Hodes | Yes | Assistant State Attorney General | 1951 | |
| Yvette D. Clarke | No | New York City Council member | 1964 | |
| John Hall | Yes | Musician | 1948 | |
| Kirsten Gillibrand | Yes | Lawyer | 1966 | |
| Michael Arcuri | Yes | Oneida County District Attorney | 1959 | |
| Heath Shuler | Yes | Real estate professional and former NFL player | 1971 | |
| Jim Jordan | No | State Senator | 1964 | |
| Charlie Wilson | No | State Senator | 1943 | |
| Betty Sutton | No | State Representative | 1963 | |
| Zack Space | Yes | City Law Director | 1961 | |
| Mary Fallin | No | Lieutenant Governor | 1954 | |
| Jason Altmire | Yes | Healthcare Executive | 1968 | |
| Joe Sestak | Yes | Navy vice admiral | 1951 | |
| Patrick Murphy | Yes | Professor | 1973 | |
| Chris Carney | Yes | Associate Professor | 1959 | |
| David Davis | No | State Representative | 1959 | |
| Steve Cohen | No | State Senator | 1949 | |
| Nick Lampson | Yes | former U.S. Representative | 1945 | |
| Ciro Rodriguez | Yes | former U.S. Representative | 1946 | |
| Peter Welch | Yes/No | State Senator | 1947 | |
| Steve Kagen | Yes | Medical Doctor | 1949 |