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Top counties

Top regions sorted by number of observed species
Rank Region Species Checklists Species
1 Cuyahoga
362
151,995
2 Lucas
358
160,681
3 Ottawa
350
59,033
4 Lake
348
54,433
5 Lorain
338
58,175
6 Erie
337
39,122
7 Franklin
330
157,169
8 Hamilton
326
63,866
9 Summit
318
70,587
10 Hancock
317
14,673
11 Wayne
312
37,357
12 Delaware
311
49,680
13 Montgomery
308
44,044
14 Ashtabula
306
12,966
15 Holmes
305
9200
16 Richland
303
19,249
17 Clermont
302
31,320
18 Clark
301
18,940
19 Mahoning
298
13,539
20 Stark
297
37,881
21 Wyandot
297
12,709
22 Warren
295
16,460
23 Butler
292
21,598
24 Geauga
292
40,151
25 Sandusky
291
13,719
26 Marion
290
14,474
27 Portage
287
28,503
28 Paulding
285
2029
29 Trumbull
284
15,831
30 Greene
282
22,817
31 Seneca
282
6196
32 Pickaway
281
9373
33 Licking
280
26,255
34 Knox
279
10,327
35 Tuscarawas
279
6884
36 Wood
279
11,445
37 Logan
276
8226
38 Ashland
275
8405
39 Medina
274
21,481
40 Auglaize
273
3338
41 Allen
270
6557
42 Muskingum
269
10,338
43 Fairfield
267
12,737
44 Mercer
267
2423
45 Preble
267
6453
46 Union
266
10,525
47 Columbiana
264
4398
48 Highland
264
4846
49 Hardin
262
5023
50 Clinton
259
7915
51 Coshocton
259
3235
52 Darke
257
4405
53 Harrison
256
4316
54 Guernsey
252
3676
55 Athens
250
22,195
56 Fulton
250
2889
57 Ross
250
3889
58 Crawford
248
2093
59 Washington
248
5702
60 Morrow
247
4223
61 Champaign
246
2967
62 Hocking
243
8968
63 Huron
242
5152
64 Madison
242
4821
65 Carroll
240
2577
66 Defiance
240
1280
67 Williams
240
2124
68 Lawrence
238
2920
69 Perry
237
6334
70 Gallia
235
1215
71 Noble
235
1750
72 Scioto
234
4804
73 Brown
232
1608
74 Jefferson
231
9129
75 Belmont
229
2461
76 Miami
227
9171
77 Shelby
225
2305
78 Vinton
225
4387
79 Adams
224
3777
80 Pike
220
749
81 Henry
219
1652
82 Fayette
218
1546
83 Morgan
217
2544
84 Putnam
207
953
85 Van Wert
201
604
86 Meigs
193
1069
87 Jackson
186
862
88 Monroe
186
1360