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Top counties

Top regions sorted by number of observed species
Rank Region Species Checklists Species
1 Cuyahoga
354
129,166
2 Lucas
350
134,800
3 Lake
345
46,787
4 Ottawa
340
48,768
5 Lorain
333
48,940
6 Erie
327
32,795
7 Franklin
323
133,305
8 Hamilton
315
54,039
9 Hancock
315
13,832
10 Summit
311
59,677
11 Wayne
307
30,999
12 Delaware
306
41,081
13 Montgomery
303
37,730
14 Ashtabula
302
11,624
15 Holmes
299
7953
16 Richland
298
18,082
17 Clark
297
17,252
18 Mahoning
297
11,696
19 Clermont
294
26,291
20 Stark
294
32,355
21 Butler
292
18,059
22 Warren
292
14,188
23 Wyandot
292
11,620
24 Geauga
289
34,908
25 Marion
288
12,201
26 Paulding
285
1650
27 Sandusky
285
10,749
28 Portage
283
25,569
29 Seneca
282
5609
30 Trumbull
282
13,126
31 Greene
279
19,799
32 Pickaway
279
8592
33 Tuscarawas
277
6019
34 Knox
276
8639
35 Logan
276
6146
36 Wood
276
9370
37 Licking
275
21,931
38 Ashland
273
7208
39 Auglaize
271
3045
40 Medina
269
17,910
41 Mercer
267
2223
42 Allen
265
5317
43 Muskingum
265
8207
44 Preble
265
4758
45 Union
265
8081
46 Fairfield
264
9976
47 Columbiana
263
3585
48 Hardin
262
4309
49 Highland
261
4376
50 Clinton
257
6038
51 Darke
256
3912
52 Harrison
255
3933
53 Coshocton
254
2785
54 Guernsey
249
3119
55 Ross
249
3607
56 Athens
246
18,776
57 Fulton
246
2548
58 Champaign
245
2566
59 Washington
244
4720
60 Morrow
243
3771
61 Hocking
242
7780
62 Crawford
241
1860
63 Williams
240
1743
64 Carroll
239
2428
65 Huron
239
4694
66 Madison
239
4366
67 Lawrence
235
2388
68 Defiance
234
1076
69 Gallia
234
1077
70 Noble
233
1613
71 Perry
233
5133
72 Scioto
233
3901
73 Brown
231
1331
74 Jefferson
229
7878
75 Belmont
228
2026
76 Miami
227
7448
77 Vinton
225
3866
78 Shelby
224
2157
79 Adams
221
3113
80 Pike
219
724
81 Fayette
217
1401
82 Morgan
212
2016
83 Henry
210
1495
84 Putnam
206
839
85 Van Wert
195
492
86 Meigs
192
910
87 Monroe
184
1270
88 Jackson
181
745