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Pennsylvania

Region stats

Top counties

Updated ~9 hr(s) ago.
Sort by Species Sort by Checklists
Top regions sorted by number of observed species
Rank Region Species Checklists Species
1 Lancaster
354
112,504
2 Bucks
352
114,852
3 Erie
350
56,466
4 Delaware
348
84,252
5 Philadelphia
346
101,252
6 Berks
336
68,226
7 Centre
330
142,952
8 Chester
327
172,953
9 Montgomery
326
196,319
10 Dauphin
320
48,587
11 Northampton
319
47,203
12 Cumberland
315
65,187
13 Westmoreland
303
41,191
14 Allegheny
302
194,849
15 Lebanon
302
44,154
16 Franklin
301
35,008
17 Luzerne
300
53,020
18 Huntingdon
298
44,259
19 Crawford
295
32,673
20 Indiana
295
36,007
21 Lehigh
294
50,881
22 York
294
61,298
23 Butler
292
56,495
24 Lycoming
287
41,420
25 Somerset
287
16,157
26 Mercer
286
22,905
27 Clinton
285
17,111
28 Carbon
279
15,631
29 Schuylkill
278
27,691
30 Monroe
274
40,458
31 Beaver
273
12,062
32 Bedford
271
11,191
33 Adams
269
22,112
34 Northumberland
269
8515
35 Tioga
268
39,434
36 Montour
267
7988
37 Clarion
266
12,182
38 Juniata
265
11,384
39 Cambria
262
12,161
40 Lawrence
262
19,562
41 Perry
262
11,188
42 Washington
262
24,686
43 Fayette
261
14,539
44 Blair
258
17,900
45 McKean
258
11,445
46 Clearfield
257
10,235
47 Armstrong
254
19,005
48 Mifflin
254
8176
49 Susquehanna
254
24,147
50 Pike
253
17,596
51 Snyder
250
5757
52 Warren
250
6480
53 Venango
248
4274
54 Union
246
6498
55 Wayne
242
11,364
56 Lackawanna
238
20,506
57 Elk
235
7351
58 Wyoming
235
6154
59 Columbia
231
6487
60 Jefferson
231
4565
61 Potter
228
6483
62 Bradford
227
7073
63 Fulton
227
6237
64 Cameron
226
4794
65 Forest
221
6860
66 Sullivan
220
4390
67 Greene
218
4188