Busiest National Parks in December

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

1. 1
   Dayton Aviation HeritageOhio
   Busy1.53×
2. 2
   San JuanPuerto Rico
   Busy1.29×
3. 3
   Joshua TreeCalifornia
   Busy1.26×
4. 4
   SaguaroArizona
   Busy1.26×
5. 5
   The White House and President's ParkDistrict of Columbia
   Busy1.26×
6. 6
   Big CypressFlorida
   Busy1.25×
7. 7
   EvergladesFlorida
   Busy1.20×
8. 8
   Castillo de San MarcosFlorida
   Busy1.20×
9. 9
   Big BendTexas
   Busy1.20×
10. 10
    Virgin IslandsU.S. Virgin Islands
    Busy1.20×
11. 11
    Kaloko-HonokōhauHawaii
    Busy1.20×
12. 12
    CoronadoArizona
    Busy1.20×
13. 13
    Hawaiʻi VolcanoesHawaii
    Busy1.18×
14. 14
    Palo Alto BattlefieldTexas
    Average1.13×
15. 15
    ChristianstedU.S. Virgin Islands
    Average1.12×
16. 16
    MojaveCalifornia
    Average1.11×
17. 17
    Tule Springs Fossil BedsNevada
    Average1.11×
18. 18
    HaleakalāHawaii
    Average1.05×
19. 19
    Puʻuhonua o HōnaunauHawaii
    Average1.03×
20. 20
    Big ThicketTexas
    Average1.03×
21. 21
    Guadalupe MountainsTexas
    Average1.03×
22. 22
    De SotoFlorida
    Average1.02×
23. 23
    Dry TortugasFlorida
    Average1.01×
24. 24
    Organ Pipe CactusArizona
    Average1.00×
25. 25
    Death ValleyCalifornia, Nevada
    Average0.99×
26. 26
    Theodore Roosevelt IslandDistrict of Columbia
    Average0.95×
27. 27
    Casa Grande RuinsArizona
    Average0.95×
28. 28
    War In The PacificGuam
    Average0.94×
29. 29
    ChiricahuaArizona
    Average0.93×
30. 30
    Natchez TraceAlabama, Mississippi, Tennessee
    Average0.92×
31. 31
    Hamilton GrangeNew York
    Average0.92×
32. 32
    Federal HallNew York
    Average0.92×
33. 33
    CabrilloCalifornia
    Average0.91×
34. 34
    BiscayneFlorida
    Average0.91×
35. 35
    PetroglyphNew Mexico
    Average0.91×
36. 36
    Castle ClintonNew York
    Average0.89×
37. 37
    PinnaclesCalifornia
    Average0.89×
38. 38
    Fort FredericaGeorgia
    Average0.89×
39. 39
    LBJ Memorial Grove on the PotomacDistrict of Columbia
    Average0.89×
40. 40
    Point ReyesCalifornia
    Average0.87×