We got a family plan for a year covers parking also and a discount on food and gift shop.
$24.95 adult ,$ 19.99 child
Not sure, I did a philly city pass, which allows you to visit as many sites that you can visit in 1,2,3,5 days, whichever you choose. The link is on tbe zoos website. I do know it's$16 to park there
https://m.pivvit.com/profile/the-philadelphia-zoo/offering/purchase-tickets
Adult 24.99 a child under one free two over 19.95
Honestly I don't know I get yearly pass I do know that children are $10 dollars for THE next week
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