Travelers are voting SplashTown Waterpark as the best amusement park in Harris County. There are 1 amusement park in Decker Prairie a city just 32 km from Harris County and 1 amusement park in Elgin which is 129 km distant. The most popular of these are SplashTown Waterpark in Decker Prairie and Zilker Park in Elgin. You can find 15 amusement parks in Texas and 209 amusement parks in the country of United States. Our members favorite in Texas is SplashTown Waterpark and Cedar Point is the top pick in United States. Want more? Check out our map of amusement parks in Harris County.