Busiest National Parks in May

These parks run well above their typical crowd levels in May, measured as a crowd index (1.0 = the park's average month) from National Park Service visitation records. A high index means May is one of that park's peak months — expect full lots and busy trails.

1. 1
   George Rogers ClarkIndiana
   Very busy2.88×
2. 2
   Golden SpikeUtah
   Very busy2.53×
3. 3
   Natural BridgesUtah
   Very busy2.21×
4. 4
   Glacier BayAlaska
   Very busy1.92×
5. 5
   City Of RocksIdaho
   Very busy1.91×
6. 6
   Capitol ReefUtah
   Very busy1.84×
7. 7
   CanyonlandsUtah
   Very busy1.80×
8. 8
   Lincoln HomeIllinois
   Very busy1.76×
9. 9
   GreenbeltMaryland
   Very busy1.75×
10. 10
    SitkaAlaska
    Very busy1.73×
11. 11
    Whitman MissionWashington
    Very busy1.72×
12. 12
    Great Sand DunesColorado
    Very busy1.68×
13. 13
    BuffaloArkansas
    Very busy1.66×
14. 14
    PipestoneMinnesota
    Very busy1.66×
15. 15
    Dayton Aviation HeritageOhio
    Very busy1.65×
16. 16
    Vietnam Veterans MemorialDistrict of Columbia
    Very busy1.62×
17. 17
    Ford's TheatreDistrict of Columbia
    Very busy1.61×
18. 18
    GettysburgPennsylvania
    Busy1.60×
19. 19
    Arlington House, The Robert E. Lee MemorialVirginia
    Busy1.59×
20. 20
    John Day Fossil BedsOregon
    Busy1.56×
21. 21
    Johnstown FloodPennsylvania
    Busy1.56×
22. 22
    CongareeSouth Carolina
    Busy1.54×
23. 23
    Oklahoma CityOklahoma
    Busy1.53×
24. 24
    AndersonvilleGeorgia
    Busy1.53×
25. 25
    ArchesUtah
    Busy1.52×
26. 26
    Klondike Gold RushAlaska
    Busy1.51×
27. 27
    VoyageursMinnesota
    Busy1.50×
28. 28
    Korean War Veterans MemorialDistrict of Columbia
    Busy1.48×
29. 29
    Bryce CanyonUtah
    Busy1.48×
30. 30
    Saugus Iron WorksMassachusetts
    Busy1.48×
31. 31
    Lake MeredithTexas
    Busy1.47×
32. 32
    Fort RaleighNorth Carolina
    Busy1.47×
33. 33
    Oregon CavesOregon
    Busy1.46×
34. 34
    World War II MemorialDistrict of Columbia
    Busy1.45×
35. 35
    Fort McHenryMaryland
    Busy1.44×
36. 36
    Franklin Delano Roosevelt MemorialDistrict of Columbia
    Busy1.43×
37. 37
    Black Canyon Of The GunnisonColorado
    Busy1.43×
38. 38
    Appomattox Court HouseVirginia
    Busy1.43×
39. 39
    Pea RidgeArkansas
    Busy1.42×
40. 40
    Martin Luther King, Jr. MemorialDistrict of Columbia
    Busy1.41×