Season 4 of The Office premiered on 2007-09-27. The first episode of the season was filmed around 2007. Here are the cast ages at the time of filming.
| Actor | Character | Age at Filming | Birthplace | Also Known For |
|---|---|---|---|---|
| Steve Carell | Michael Scott | 44.9 years | Concord, MA | The 40-Year-Old Virgin, Crazy Stupid Love |
| Rainn Wilson | Dwight Schrute | 41.5 years | Seattle, WA | Six Feet Under, Backstrom |
| John Krasinski | Jim Halpert | 27.8 years | Newton, MA | A Quiet Place, Jack Ryan (Amazon) |
| Jenna Fischer | Pam Beesly | 33.4 years | Fort Wayne, IN | Walk Hard, Splitting Up Together |
| B. J. Novak | Ryan Howard | 28.0 years | Newton, MA | Writer, Inglourious Basterds |
| Mindy Kaling | Kelly Kapoor | 28.1 years | Cambridge, MA | The Mindy Project, Never Have I Ever |
| Leslie David Baker | Stanley Hudson | 49.4 years | Chicago, IL | Character actor, commercials |
| Brian Baumgartner | Kevin Malone | 34.7 years | Atlanta, GA | Into Temptation |
| Angela Kinsey | Angela Martin | 36.1 years | Jakarta, Indonesia | Your Family or Mine, Haters Back Off |
| Oscar Nunez | Oscar Martinez | 48.7 years | Colón, Cuba | The Paper |
| Phyllis Smith | Phyllis Lapin-Vance | 56.0 years | St. Louis, MO | Bad Teacher, Inside Out (Sadness) |
| Kate Flannery | Meredith Palmer | 43.1 years | Philadelphia, PA | Comedian, Dancing with the Stars |
| Creed Bratton | Creed Bratton | 64.5 years | Los Angeles, CA | The Grass Roots (musician) |
| Paul Lieberstein | Toby Flenderson | 40.4 years | Concord, MA | Writer/showrunner (s5-8) |
| Ed Helms | Andy Bernard | 33.5 years | Atlanta, GA | The Hangover, Vacation |
| Craig Robinson | Darryl Philbin | 35.8 years | Chicago, IL | Pineapple Express, Mr. Robot |
Steve Carell was approximately 44.9 years old when The Office Season 4 was filmed around 2007.
Rainn Wilson was approximately 41.5 years old when The Office Season 4 was filmed around 2007.
John Krasinski was approximately 27.8 years old when The Office Season 4 was filmed around 2007.
Jenna Fischer was approximately 33.4 years old when The Office Season 4 was filmed around 2007.
B. J. Novak was approximately 28.0 years old when The Office Season 4 was filmed around 2007.
Mindy Kaling was approximately 28.1 years old when The Office Season 4 was filmed around 2007.
Leslie David Baker was approximately 49.4 years old when The Office Season 4 was filmed around 2007.
Brian Baumgartner was approximately 34.7 years old when The Office Season 4 was filmed around 2007.
Angela Kinsey was approximately 36.1 years old when The Office Season 4 was filmed around 2007.
Oscar Nunez was approximately 48.7 years old when The Office Season 4 was filmed around 2007.
Phyllis Smith was approximately 56.0 years old when The Office Season 4 was filmed around 2007.
Kate Flannery was approximately 43.1 years old when The Office Season 4 was filmed around 2007.
Creed Bratton was approximately 64.5 years old when The Office Season 4 was filmed around 2007.
Paul Lieberstein was approximately 40.4 years old when The Office Season 4 was filmed around 2007.
Ed Helms was approximately 33.5 years old when The Office Season 4 was filmed around 2007.
Craig Robinson was approximately 35.8 years old when The Office Season 4 was filmed around 2007.