Castle Episode Count Comparison (Seasons)
How many Castle episodes per season? Compare all 8 season counts plus the 173 total, from 10 in season 1 to 24 in peak years, using official ABC episode guides.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Full series episodes Top here at 173 episodes. | 173 episodes | Full ABC run, 2009 to 2016 | ABC episode guide: Castle 173 episodes total |
| Season 1 episodes Lowest here at 10 episodes. | 10 episodes | Season 1, 2009 | ABC episode guide: Season 1 10 episodes |
| Season 2 episodes Ties longest at 24. | 24 episodes | Season 2, 2009 to 2010 | ABC episode guide: Season 2 24 episodes |
| Season 3 episodes Ties longest at 24. | 24 episodes | Season 3, 2010 to 2011 | ABC episode guide: Season 3 24 episodes |
| Season 4 episodes 23 episodes. | 23 episodes | Season 4, 2011 to 2012 | ABC episode guide: Season 4 23 episodes |
| Season 5 episodes Ties longest at 24. | 24 episodes | Season 5, 2012 to 2013 | ABC episode guide: Season 5 24 episodes |
| Season 6 episodes 23 episodes. Washington arc. | 23 episodes | Season 6, 2013 to 2014 | ABC episode guide: Season 6 23 episodes |
| Season 7 episodes 23 episodes. | 23 episodes | Season 7, 2014 to 2015 | ABC episode guide: Season 7 23 episodes |
| Season 8 episodes Final season at 22. | 22 episodes | Season 8, 2015 to 2016 | ABC episode guide: Season 8 22 episodes |
About this converter
Castle ran 173 episodes on ABC from 2009 to 2016. Season 1 is a 10 episode midseason trial, the clear low point. Seasons 2, 3 and 5 tie at 24, the longest on the table. Seasons 4, 6 and 7 sit at 23. Season 8 closes with 22. The show kept a steady crime of the week plus arc mix. All values are ABC broadcast counts. The full 173 equals more than 17 season 1 orders. Seasons 2, 3 and 5 at 24 give 72 combined. Seasons 4, 6 and 7 at 23 give 69 more before the finale year.
How to use it
Pick two entries and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. One box holds a count of the first entry, one holds the matching count of the second, one holds total episodes. Try the full series against the shortest season.
Season 1 started midseason in March 2009, which explains the 10 count. The Beckett shooting finale lives inside season 3 totals. No web shorts enter the rows. Only ABC broadcast season episodes are counted. The finale aired May 16 2016. Season 1 started midseason in March 2009, which sets it at 10. The Beckett shooting finale lives inside season 3 totals. Web shorts stay out.
FAQ
How many Castle episodes exist?
173 episodes across 8 seasons on ABC.
Which season is shortest?
Season 1 with 10 episodes.
Which seasons are longest?
Seasons 2, 3 and 5 tie at 24 episodes.
Is season 8 really 22?
Yes. ABC lists 22 episodes for the final year.
Sources
- ABC official Castle episode guide (total 173, season 1 10, season 2 24, season 3 24, season 4 23)
- ABC episode guide (season 5 24, season 6 23, season 7 23, season 8 22)
Last verified: 2026-10-09 · 9 entries
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