They also have family pass options if you plan to go often or you can look at Philly pass
It very good park and zoo for one day picnic. Zoo fee about 24$ for adults and 19$ for kids (2-11)and below 2yr for free entry.. it's one of the best zoo in Philadelphia..
Adults $24.00, kids 2-11 $19.00. Kids under 2 are free and parking is $16.00
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