According to the 2017 Themed Entertainment Association Index Report, the most popular Walt Disney World theme park is the Magic Kingdom, which attracted over 20 million guests in 2017. The popularity of a park and how much you’ll enjoy it aren’t necessarily correlated, so this doesn’t answer the question of what is the best Walt Disney World park. That question is completely subjective.
Below is the 2017 Themed Entertainment Association Index Report ranking of the Walt Disney World theme parks by attendance:
1) Magic Kingdom – 20,450,000 guests
2) Disney’s Animal Kingdom – 12,500,000 guests
3) Epcot – 12,200,000 guests
4) Disney’s Hollywood Studios – 10,722,000 guests