Filters and navigation

Change location Change location
All years

Top counties

Top regions sorted by number of observed species
Rank Region Species Checklists Species
1 Polk
360
38,823
2 Johnson
341
38,457
3 Story
327
21,024
4 Marion
324
3793
5 Woodbury
322
5836
6 Cerro Gordo
313
2215
7 Dickinson
311
2785
8 Linn
311
23,157
9 Pottawattamie
311
6469
10 Fremont
304
1460
11 Black Hawk
303
12,723
12 Scott
303
11,241
13 Dubuque
299
9527
14 Boone
297
3629
15 Des Moines
296
2401
16 Warren
295
1265
17 Jackson
287
2916
18 Appanoose
286
1071
19 Dallas
286
6647
20 Louisa
285
2909
21 Kossuth
282
855
22 Tama
279
1798
23 Jasper
278
4123
24 Lee
278
1779
25 Clay
277
1100
26 Marshall
277
2603
27 Greene
275
2560
28 Hardin
275
1434
29 Bremer
274
3428
30 Muscatine
274
3264
31 Decatur
273
1644
32 Harrison
273
2981
33 Iowa
272
1591
34 Sioux
271
1944
35 Buena Vista
270
1951
36 Madison
270
2860
37 Guthrie
268
1064
38 Allamakee
266
3066
39 Monona
266
897
40 Winneshiek
265
3061
41 Carroll
264
1873
42 Clinton
264
1498
43 Sac
264
1090
44 Lucas
262
2697
45 Hamilton
256
910
46 Hancock
256
579
47 Winnebago
255
1580
48 Butler
253
1406
49 Poweshiek
253
1378
50 Clayton
252
1660
51 Benton
249
1562
52 Jefferson
247
5593
53 Mills
247
751
54 Palo Alto
247
567
55 Union
247
548
56 Mitchell
246
461
57 Plymouth
246
696
58 Van Buren
245
1871
59 Webster
245
794
60 Buchanan
244
2342
61 Calhoun
244
704
62 Pocahontas
244
747
63 Emmet
243
364
64 Washington
242
1775
65 Grundy
240
577
66 Wright
235
320
67 Mahaska
234
710
68 Jones
233
791
69 Cherokee
231
354
70 Fayette
231
798
71 Cedar
227
1044
72 Montgomery
226
332
73 Worth
224
550
74 Ringgold
223
885
75 Wayne
221
220
76 Franklin
219
372
77 Floyd
218
527
78 Wapello
218
603
79 O'Brien
217
410
80 Howard
216
484
81 Lyon
216
542
82 Shelby
216
327
83 Clarke
215
463
84 Henry
215
740
85 Page
213
215
86 Monroe
212
328
87 Keokuk
210
340
88 Taylor
209
198
89 Audubon
206
159
90 Delaware
204
695
91 Adams
203
184
92 Chickasaw
202
460
93 Cass
201
979
94 Humboldt
199
127
95 Adair
198
427
96 Davis
196
239
97 Ida
194
337
98 Osceola
190
161
99 Crawford
187
203