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Massachusetts

Top counties

Top regions sorted by number of observed species
Rank Region Species Checklists Species
1 Barnstable
434
215,231
2 Essex
433
234,015
3 Plymouth
395
94,862
4 Dukes
387
14,893
5 Nantucket
386
34,620
6 Bristol
376
60,610
7 Suffolk
356
87,948
8 Middlesex
353
244,037
9 Norfolk
350
88,813
10 Worcester
342
95,395
11 Hampshire
332
121,014
12 Franklin
315
39,744
13 Berkshire
309
68,321
14 Hampden
300
32,455