According to the National Park Service, the National Park System had a total of 277,299,880 recreational visits in 2002. When you consider that the population of the entire United States in 2002 was 280 million, it becomes clear that there was virtually one visit to the national park system per U.S. resident!

Here are the top 20 National Parks in terms of recreational visitation in 2002. Note that the statistics listed below are for National Parks only (recreational areas, national historical monuments etc. are not included):

National Park	State	Visitors
Great Smoky Mountains	TN, NC	9,316,420
Grand Canyon	AZ	4,001,974
Olympic	WA	3,691,310
Yosemite	CA	3,361,867
Cuyahoga Valley	OH	3,217,935
Rocky Mountain	CO	2,988,475
Yellowstone	ID,MT,WY	2,973,677
Grand Teton	WY	2,612,629
Zion	UT	2,592,545
Acadia	ME	2,558,572
Glacier	MT	1,905,689
Mammoth Cave	KY	1,891,307
Haleakala	HI	1,521,080
Hot Springs	AR	1,440,227
Shenandoah	VA	1,389,244
Mount Rainer	WA	1,310,390
Joshua Tree	CA	1,178,376
Hawaii Volcanoes	HI	1,110,998
Everglades	FL	968,909
Sequoia	CA	920,292