Updated July 2026
Best Time to Visit Illinois National Parks
Illinois has 3 National Park Service units that report visitation. Below, each is ranked by annual visits, with the month our data recommends for the best balance of light crowds, comfortable weather and daylight. Crowds peak in summer almost everywhere — the recommended months show where the quieter shoulder seasons fall.
Illinois parks on the map
Click a marker for the park page, or use Where to stay in the table.
Ways to pick a Illinois park
Quietest months
- Lincoln Home — January
- Emmett Till and Mamie Till-Mobley — January
- Pullman — December
Most-visited
- Lincoln Home — 154,522 visits
- Pullman — 31,961 visits
- Emmett Till and Mamie Till-Mobley — 3,763 visits
| Park | Annual visits | Best time | Busiest | Quietest | Stays |
|---|---|---|---|---|---|
| Lincoln HomeNational Historic Site | 154,522 | September | May | Jan | Where to stay → |
| PullmanNational Historical Park | 31,961 | December | Jul | Dec | Where to stay → |
| Emmett Till and Mamie Till-MobleyNational Monument | 3,763 | October | Jun | Jan | Where to stay → |
Illinois park crowd calendar (3 parks, all 12 months)
Download the full best-months table for all 3 of Illinois's national parks — each park's month-by-month crowd index (1.0 = its average month), busiest and quietest months, and Best-Time-to-Visit score. Built from NPS visitation data. Enter your email to download. No spam, unsubscribe anytime.
Where to stay near Illinois's national parks
Find hotels, cabins and vacation rentals across Illinois to base your national-park trip — live availability and prices.
Top-rated places to stay near Illinois national parks
Prices for Sep 11–13, 4 adults. Change dates on the map below.
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