Oregon counties quiz

The 36 counties in the quiz

They’re the 36 counties of Oregon, as counted by the US Census Bureau. The state capital, Salem, is in Marion County.

How to play

In Point mode we name a county and you tap it on the map; in Type mode one lights up and you type its name (accents don’t matter); and in Time trial you get 6 seconds per question. If you miss, we show you where it was, which way it lies and a hint drawn from the data: its size rank and its neighbors.

Each game has 10, 20 or all the questions, and at the end you can practice just the ones you missed. Your best score for each mode is saved in this browser only: neither we nor anyone else can see it, and there’s no sign-up.

The hardest ones

The smallest counties are the hardest, since they barely show on the map: Multnomah (431 sq mi), Hood River (522 sq mi), and Columbia (659 sq mi). Zoom in with the buttons or two fingers to tap them.

Tips to learn them

• Start with the three largest: Harney, Malheur, and Lake cover 29% of the area of Oregon.
• The 10 counties bordering Washington trace that border on the map: Clatsop, Columbia, Gilliam, Hood River, Morrow, Multnomah, Sherman, Umatilla, Wallowa, and Wasco.
• Only 7 of the 36 counties have a coastline: find them first along the edge of the map.
• Grant has the most neighbors: it borders 8 counties. Once you place it, you have a landmark for many more.
• Multnomah is the most populous (795,391 people in 2025) and, together with Washington and Clackamas, is home to 43% of Oregon’s people.

Playing in class

If you teach in Oregon, start with your school’s county and its neighbors and add a few each day. Otherwise, it’s a good way to get to know the state before studying it.

With the Challenge your class link, everyone gets the same questions in the same order, with no accounts or passwords, and each student sees their own score, time and streak. To practice on paper, there’s a printable worksheet of the same map with an answer key.

List of all 36 counties

1. Baker pop. 16,658
2. Benton pop. 97,728
3. Clackamas pop. 426,280
4. Clatsop pop. 40,926
5. Columbia pop. 54,091
6. Coos pop. 63,992
7. Crook pop. 27,564
8. Curry pop. 22,621
9. Deschutes pop. 213,072
10. Douglas pop. 111,951
11. Gilliam pop. 1,971
12. Grant pop. 7,075
13. Harney pop. 7,380
14. Hood River pop. 23,720
15. Jackson pop. 221,795
16. Jefferson pop. 25,740
17. Josephine pop. 87,867
18. Klamath pop. 70,274
19. Lake pop. 8,187
20. Lane pop. 381,584
21. Lincoln pop. 50,636
22. Linn pop. 132,843
23. Malheur pop. 32,261
24. Marion pop. 355,777
25. Morrow pop. 12,602
26. Multnomah pop. 795,391
27. Polk pop. 90,037
28. Sherman pop. 2,051
29. Tillamook pop. 27,384
30. Umatilla pop. 81,119
31. Union pop. 25,900
32. Wallowa pop. 7,595
33. Wasco pop. 26,310
34. Washington pop. 611,708
35. Wheeler pop. 1,472
36. Yamhill pop. 110,024