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United States

Top states or provinces

Top regions sorted by number of observed species
Rank Region Species Checklists Species
1 Texas
468
115,029
2 California
452
166,392
3 Florida
374
130,116
4 Arizona
362
65,487
5 New Mexico
297
20,558
6 Louisiana
295
13,866
7 Oregon
290
49,500
8 North Carolina
272
54,463
9 Georgia
265
35,506
10 Washington
264
61,967
11 Alabama
261
13,811
12 South Carolina
251
25,489
13 Virginia
243
54,056
14 Nevada
239
7314
15 Mississippi
237
6389
16 Colorado
235
49,112
17 New York
233
94,842
18 Maryland
228
41,178
19 Utah
226
15,009
20 New Jersey
223
35,986
21 Massachusetts
221
62,331
22 Oklahoma
221
9480
23 Idaho
207
12,301
24 Delaware
197
9865
25 Tennessee
197
26,382
26 Connecticut
195
24,041
27 Arkansas
193
9492
28 Kansas
192
11,884
29 Indiana
187
26,403
30 Pennsylvania
187
78,183
31 Illinois
186
47,262
32 Ohio
184
60,289
33 Missouri
183
20,146
34 Alaska
179
4639
35 Maine
174
24,407
36 Michigan
174
51,838
37 New Hampshire
171
15,130
38 Rhode Island
171
7508
39 Nebraska
162
7491
40 Kentucky
161
11,354
41 Wisconsin
158
42,143
42 Montana
157
9430
43 Hawaii
155
10,350
44 Minnesota
150
33,246
45 Iowa
146
8385
46 West Virginia
143
6794
47 Wyoming
139
3353
48 Vermont
137
15,041
49 District of Columbia
133
4187
50 South Dakota
123
1658
51 North Dakota
97
2864