for kids ages 4 to 16; children 3 and younger enter for free. To access the aquarium, you'll have to purchase separate tickets. If you'd like to visit both the zoo and aquarium, combo tickets are ...
Standard admission costs 80 Mexican pesos (about $4) for adults and 47 Mexican pesos (around $2.50) for kids; upgraded tickets ... For more information, visit the zoo's website.
Saturday is Family Free Day at the Milwaukee County Zoo and admission is free all day. If you go, you can check out the newly renovated penguin habitat, now with bigger viewing windows.