List of United States Representatives in the 110th Congress by seniority U.S. House seniority list U.S. House seniority

| Rank_ | Representative | Party | District | Seniority_date | Notes_ |
|---|---|---|---|---|---|
| 361 | Randy Kuhl | R | NY-29 | January 3, 2005 | Left the House in 2009. |
| 362 | Dan Lipinski | D | IL-03 | January 3, 2005 |  |
| 363 | Connie Mack IV | R | FL-14 | January 3, 2005 |  |
| 364 | Kenny Marchant | R | TX-24 | January 3, 2005 |  |
| 365 | Mike McCaul | R | TX-10 | January 3, 2005 |  |
| 366 | Patrick McHenry | R | NC-10 | January 3, 2005 |  |
| 367 | Cathy McMorris | R | WA-5 | January 3, 2005 |  |
| 368 | Charlie Melancon | D | LA-3 | January 3, 2005 |  |
| 369 | Gwen Moore | D | WI-4 | January 3, 2005 |  |
| 370 | Ted Poe | R | TX-02 | January 3, 2005 |  |
| 371 | Tom Price | R | GA-06 | January 3, 2005 |  |
| 372 | Dave Reichert | R | WA-8 | January 3, 2005 |  |
| 373 | John Salazar | D | CO-3 | January 3, 2005 |  |