| Air Date | Episode # |
Episode Title | Rating | Households (in millions) |
|
|---|---|---|---|---|---|
| 09/08/66 | 1 | 1- 1 | The Man Trap | 20.7 | 11.4 |
| 09/15/66 | 2 | 1- 2 | Charlie X | 18.7 # | 10.3 |
| 09/22/66 | 3 | 1- 3 | Where No Man Has Gone Before * | ||
| 09/29/66 | 4 | 1- 4 | The Naked Time | 17.4 # | 9.6 |
| 10/06/66 | 5 | 1- 5 | The Enemy Within | ||
| 10/13/66 | 6 | 1- 6 | Mudd's Women | 17.5 # | 9.6 |
| 10/20/66 | 7 | 1- 7 | What Are Little Girls Made Of? | ||
| 10/27/66 | 8 | 1- 8 | Miri | |
|
| 11/03/66 | 9 | 1- 9 | Dagger of the Mind | |
|
| 11/10/66 | 10 | 1-10 | The Corbomite Maneuver | |
|
| 11/17/66 | 11 | 1-11 | The Menagerie (Part I) | |
|
| 11/24/66 | 12 | 1-12 | The Menagerie (Part II) | |
|
| 12/01/66 | Pre-empted | ||||
| 12/08/66 | 13 | 1-13 | The Conscience of the King | |
|
| 12/15/66 | 14 | 1-14 | Balance of Terror | |
|
| 12/22/66 | R | 1- 7 | What Are Little Girls Made Of? | |
|
| 12/29/66 | 15 | 1-15 | Shore Leave | |
|
| 01/05/67 | 16 | 1-16 | The Galileo Seven | |
|
| 01/12/67 | 17 | 1-17 | The Squire of Gothos | |
|
| 01/19/67 | 18 | 1-18 | Arena | |
|
| 01/26/67 | 19 | 1-19 | Tomorrow is Yesterday | |
|
| 02/02/67 | 20 | 1-20 | Court-Martial | |
|
| 02/09/67 | 21 | 1-21 | The Return of the Archons | |
|
| 02/16/67 | 22 | 1-22 | Space Seed | |
|
| 02/23/67 | 23 | 1-23 | A Taste of Armageddon | |
|
| 03/02/67 | 24 | 1-24 | This Side of Paradise | |
|
| 03/09/67 | 25 | 1-25 | The Devil in the Dark | |
|
| 03/16/67 | Pre-empted | ||||
| 03/23/67 | 26 | 1-26 | Errand of Mercy | |
|
| 03/30/67 | 27 | 1-27 | The Alternative Factor | |
|
| 04/06/67 | 28 | 1-28 | The City on the Edge of Forever | |
|
| 04/13/67 | 29 | 1-29 | Operation: Annihilate! | |
|
| 04/20/67 | R | 1- 3 | Where No Man Has Gone Before | |
|
| 04/27/67 | R | 1- 4 | The Naked Time | |
|
| 05/04/67 | R | 1- 6 | Mudd's Women | |
|
| 05/11/67 | R | 1-10 | The Corbomite Maneuver | |
|
| 05/18/67 | R | 1-11 | The Menagerie (Part I) | |
|
| 05/25/67 | R | 1-12 | The Menagerie (Part II) | |
|
| 06/01/67 | R | 1- 2 | Charlie X | |
|
| 06/08/67 | R | 1-15 | Shore Leave | |
|
| 06/15/67 | R | 1-25 | The Devil in the Dark | |
|
| 06/22/67 | R | 1-17 | The Squire of Gothos | |
|
| 06/29/67 | R | 1- 8 | Miri | |
|
| 07/06/67 | R | 1-18 | Arena | |
|
| 07/13/67 | R | 1-19 | Tomorrow is Yesterday | |
|
| 07/20/67 | R | 1-23 | A Taste of Armageddon | |
|
| 07/27/67 | R | 1-21 | The Return of the Archons | |
|
| 08/03/67 | R | 1-14 | Balance of Terror | |
|
| 08/10/67 | R | 1-24 | This Side of Paradise | |
|
| 08/17/67 | Pre-empted | ||||
| 08/24/67 | R | 1-22 | Space Seed | |
|
| 08/31/67 | R | 1-28 | The City on the Edge of Forever | |
|
| 09/07/67 | Pre-empted | ||||
| Season Average (new episodes only) |
|
|
|||
Aired on Thursdays at 8:30 PM ET/PT on the NBC network
| # | Rating average reported for 2 episodes, ratings for individual episodes not available |
| * | Second Pilot Episode. Produced in 1965, before the production of the series |
| R | Rerun |
Notes:
|