Grey's Anatomy Episode Ratings Heatmap
2005 · 5 Seasons · 102 Episodes · Overall Score: 7.8/10 (9 rated)
Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 0.39), maintaining an average of 7.8.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 | Season 4 | Season 5 |
|---|---|---|---|---|---|
| Ep 1 | 7.7 | – | – | – | – |
| Ep 2 | 7.2 | – | – | – | – |
| Ep 3 | 7.7 | – | – | – | – |
| Ep 4 | 7.2 | – | – | – | – |
| Ep 5 | 8.2 | – | – | – | – |
| Ep 6 | 8.0 | – | – | – | – |
| Ep 7 | 7.9 | – | – | – | – |
| Ep 8 | 8.2 | – | – | – | – |
| Ep 9 | 8.1 | – | – | – | – |
| Ep 10 | – | – | – | – | – |
| Ep 11 | – | – | – | – | – |
| Ep 12 | – | – | – | – | – |
| Ep 13 | – | – | – | – | – |
| Ep 14 | – | – | – | – | – |
| Ep 15 | – | – | – | – | – |
| Ep 16 | – | – | – | – | – |
| Ep 17 | – | – | – | – | – |
| Ep 18 | – | – | – | – | – |
| Ep 19 | – | – | – | – | – |
| Ep 20 | – | – | – | – | – |
| Ep 21 | – | – | – | – | – |
| Ep 22 | – | – | – | – | – |
| Ep 23 | – | – | – | – | – |
| Ep 24 | – | – | – | – | – |
| Ep 25 | – | – | – | – | – |
| Ep 26 | – | – | – | – | – |
| Ep 27 | – | – | – | – | – |
| Season Avg | 7.8 | – | – | – | – |
Ratings Analysis & Trajectory
Across 5 seasons and 102 episodes, Grey's Anatomy has earned an overall series rating of 7.8 out of 10. The series displays remarkable consistency across its narrative arc, maintaining reliable ratings from premiere to conclusion.
The single highest-rated hour of television in the series is Season 1, Episode 5 ("Shake Your Groove Thing"), rated at an extraordinary 8.2/10 with 26 ratings. Conversely, the lowest-rated installment is Season 1, Episode 4 ("No Man's Land"), landing at 7.2/10.
The most precipitous single-episode shift occurred in Season 1 between Episode 1 ("A Hard Day's Night", 7.7) and Episode 2 ("The First Cut is the Deepest", 7.2), a swing of 0.5 points.
Top 10 Highest Rated Episodes of Grey's Anatomy
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 5 | Shake Your Groove Thing | 8.2 | 26 | Apr 24, 2005 |
| #2 | Season 1, Ep 8 | Save Me | 8.2 | 21 | May 15, 2005 |
| #3 | Season 1, Ep 9 | Who's Zoomin' Who? | 8.1 | 24 | May 22, 2005 |
| #4 | Season 1, Ep 6 | If Tomorrow Never Comes | 8.0 | 22 | May 1, 2005 |
| #5 | Season 1, Ep 7 | The Self-Destruct Button | 7.9 | 25 | May 8, 2005 |
| #6 | Season 1, Ep 1 | A Hard Day's Night | 7.7 | 73 | Mar 27, 2005 |
| #7 | Season 1, Ep 3 | Winning a Battle, Losing the War | 7.7 | 34 | Apr 10, 2005 |
| #8 | Season 1, Ep 2 | The First Cut is the Deepest | 7.2 | 40 | Apr 3, 2005 |
| #9 | Season 1, Ep 4 | No Man's Land | 7.2 | 30 | Apr 17, 2005 |