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Top counties

Top regions sorted by number of observed species
Rank Region Species Checklists Species
1 Clallam
399
107,365
2 King
395
435,885
3 Grays Harbor
385
64,764
4 Skagit
376
115,493
5 Pacific
362
27,565
6 Snohomish
352
137,072
7 Whatcom
348
78,719
8 Walla Walla
342
46,672
9 Pierce
338
119,997
10 Kitsap
334
85,293
11 Grant
328
30,714
12 Thurston
325
92,200
13 Yakima
318
56,013
14 Jefferson
316
63,890
15 Clark
313
62,938
16 Spokane
312
57,325
17 Benton
310
31,255
18 Lincoln
310
12,567
19 Island
307
53,459
20 Klickitat
305
25,306
21 Okanogan
305
41,970
22 Kittitas
304
44,778
23 Chelan
299
59,658
24 San Juan
296
49,553
25 Adams
291
9424
26 Douglas
290
18,104
27 Franklin
287
10,300
28 Whitman
280
23,494
29 Skamania
276
12,313
30 Asotin
274
6545
31 Cowlitz
271
18,987
32 Stevens
269
15,490
33 Mason
266
31,754
34 Lewis
264
17,220
35 Pend Oreille
261
8954
36 Wahkiakum
249
7845
37 Ferry
246
6740
38 Columbia
237
3111
39 Garfield
235
1789