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Massachusetts

Top counties

Top regions sorted by number of observed species
Rank Region Species Checklists Species
1 Barnstable
434
220,366
2 Essex
434
239,060
3 Plymouth
395
96,811
4 Nantucket
388
35,247
5 Dukes
387
15,557
6 Bristol
378
62,998
7 Suffolk
356
89,857
8 Middlesex
353
250,295
9 Norfolk
350
90,765
10 Worcester
342
97,741
11 Hampshire
332
124,003
12 Franklin
315
40,419
13 Berkshire
310
70,165
14 Hampden
301
33,044