Eureka Episode Ratings Heatmap
2006 · 5 Seasons · 77 Episodes · Overall Score: 8.1/10 (77 rated)
Season 4 holds the highest collective average score across the series.
Season 4 Details →Lowest score variance (σ = 0.25), maintaining an average of 8.0.
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 | 8.1 | 8.0 | 7.8 | 8.6 | 8.2 |
| Ep 2 | 8.0 | 8.0 | 8.0 | 8.8 | 8.6 |
| Ep 3 | 8.2 | 6.6 | 7.8 | 8.2 | 8.6 |
| Ep 4 | 8.0 | 8.0 | 8.3 | 7.8 | 8.4 |
| Ep 5 | 8.2 | 7.7 | 7.8 | 8.2 | 9.0 |
| Ep 6 | 7.9 | 8.3 | 7.6 | 8.0 | 8.6 |
| Ep 7 | 7.8 | 8.4 | 8.2 | 8.1 | 8.2 |
| Ep 8 | 7.6 | 8.2 | 8.3 | 8.6 | 7.2 |
| Ep 9 | 7.7 | 8.0 | 8.1 | 8.2 | 8.4 |
| Ep 10 | 8.1 | 6.5 | 7.9 | 7.8 | 8.4 |
| Ep 11 | 8.7 | 8.2 | 8.1 | 8.4 | 8.2 |
| Ep 12 | 8.7 | 7.8 | 8.0 | 8.7 | 8.7 |
| Ep 13 | – | 8.1 | 8.2 | 8.4 | 7.4 |
| Ep 14 | – | – | 8.2 | 8.7 | – |
| Ep 15 | – | – | 8.0 | 8.6 | – |
| Ep 16 | – | – | 7.3 | 8.8 | – |
| Ep 17 | – | – | 8.0 | 7.3 | – |
| Ep 18 | – | – | 8.1 | 8.6 | – |
| Ep 19 | – | – | – | 8.8 | – |
| Ep 20 | – | – | – | 8.6 | – |
| Ep 21 | – | – | – | 7.4 | – |
| Season Avg | 8.1 | 7.8 | 8.0 | 8.3 | 8.3 |
Ratings Analysis & Trajectory
Across 5 seasons and 77 episodes, Eureka has earned an overall series rating of 8.1 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 5, Episode 5 ("Jack of All Trades"), rated at an extraordinary 9.0/10 with 10 ratings. Conversely, the lowest-rated installment is Season 2, Episode 10 ("God is in the Details"), landing at 6.5/10.
The most precipitous single-episode shift occurred in Season 2 between Episode 9 ("Sight Unseen", 8) and Episode 10 ("God is in the Details", 6.5), a swing of 1.5 points.
Top 10 Highest Rated Episodes of Eureka
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 5, Ep 5 | Jack of All Trades | 9.0 | 10 | May 14, 2012 |
| #2 | Season 4, Ep 2 | A New World | 8.8 | 11 | Jul 16, 2010 |
| #3 | Season 4, Ep 16 | Of Mites and Men | 8.8 | 9 | Aug 15, 2011 |
| #4 | Season 4, Ep 19 | One Small Step... | 8.8 | 9 | Sep 12, 2011 |
| #5 | Season 1, Ep 12 | Once in a Lifetime | 8.7 | 12 | Oct 3, 2006 |
| #6 | Season 1, Ep 11 | H.O.U.S.E. Rules | 8.7 | 11 | Sep 26, 2006 |
| #7 | Season 4, Ep 12 | Reprise | 8.7 | 9 | Jul 18, 2011 |
| #8 | Season 4, Ep 14 | Up in the Air | 8.7 | 9 | Aug 1, 2011 |
| #9 | Season 5, Ep 12 | Double Take | 8.7 | 9 | Jul 9, 2012 |
| #10 | Season 4, Ep 1 | Founder's Day | 8.6 | 11 | Jul 9, 2010 |