Idaho vs. Idaho State
Idaho and Idaho State have 25 meetings on file, the first in 1929; Idaho leads the series 19–6 in the games on file. Over the last 10 meetings it’s Idaho 7–3. The winner takes home the Potato State Trophy, played for since 2024. Idaho State has held it since the 2025 game. Share
- Idaho wins
- 19
- Idaho State wins
- 6
- Ties
- 0
- Earliest on file
- 1929
- Longest streak
- 7 Idaho
- Current streak
- 1 Idaho State
- Last 10 meetings
- Idaho 7–3
- Most recent
- 2025
The series at a glance
| ’0 | ’1 | ’2 | ’3 | ’4 | ’5 | ’6 | ’7 | ’8 | ’9 | W–L | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1920s | 1–0 | ||||||||||
| 1960s | 6–1 | ||||||||||
| 1970s | 3–2 | ||||||||||
| 1990s | 2–0 | ||||||||||
| 2000s | 2–0 | ||||||||||
| 2010s | 1–1 | ||||||||||
| 2020s | 4–2 |
- Average margin
- 22 points; 6 decided by one score (8 or fewer)
- At Idaho
- 10–1 Idaho’s record at home
- At Idaho State
- 5–9 Idaho State’s record at home
- Shutouts
- 4
Every meeting on file, as played. Ranks are the AP poll’s going in.
The Potato State Trophy
- Played for since
- 2024
- Held by
- Idaho State since the 2025 game
- Games for it on file
- 2 Idaho 1, Idaho State 1
Who holds it comes from the games on file: the winner of the latest regular-season meeting since 2024 (bowl rematches aren’t played for it); a tie leaves it with the holder (the usual rule; the article doesn’t say). The rivalry’s article counts the games for it: Idaho, 5–3. From Wikipedia’s list of rivalry games and the rivalry’s article (CC BY-SA). More on the Potato State Trophy.
Games that tell the story
- Idaho’s biggest win1998: Idaho 52, Idaho State 3by 49 points
- Idaho State’s biggest win2018: Idaho State 62, Idaho 28by 34 points
- Upset1972: Idaho State 35, Idaho 7Idaho State had a 25% chance, by our ratings before kickoff
Both programs through the years
Our Elo rating at the end of each season, a measure of how strong a team was, not a forecast; 1500 is an average FBS team.
Every game
Every game is listed as played on the field.