Good day!
This time around I'm going to be reviewing Cosley Zoo, a tiny local zoo in Wheaton, Illinois, in the west suburbs of Chicago. Wheaton is most known for being the home to Wheaton College, a very conservative private Evangelical school, despite the city itself leaning Democratic.
Other attractions in the Chicago suburbs include:
C2: Cosley Zoo (2026) (this post)
And my backlog includes:
All of the pictures in this post were taken by me except for the map of the zoo. If you want to use any of my photos, please contact me to first obtain permission.
COSLEY ZOO
1356 N. Gary Ave.
Wheaton, IL 60187
Website: https://cosleyzoo.org/
Hours:
Generally open 9 AM - 4 PM daily (last admission 3:15 PM).
From April - October, open 9 AM - 5 PM daily (last admission 4:15 PM).
Different hours for certain holiday periods.
Cost (as of 2026):
Non-Resident Adults (Ages 12 - 59): $12
Non-Resident Adults (Ages 60+): $10
Children (Ages 11 and Under): Free!
Wheaton Park District Residents: Free! with a Wheaton Park District Universal Resident ID.
Cosley Zoo Members: Free! Please show your Cosley Zoo membership card and a photo ID.
Gold Star Family Member: Free! Please show your Illinois driver’s license or id card with the Gold Star Emblem to receive free zoo admission for you and one additional adult.
Advanced reservations are required for all groups of 10 or more individuals.
Parking is free.
Cosley Zoo participates in the AZA reciprocity program at the 100% level. Members of institutions participating at 100% get free admission at other institutions participating at the 100% level and 50% off admission at institutions participating at the 50% level. Members of institutions participating at 50% get half off admission at all participating institutions.
Since I was a member of Buttonwood Park Zoo, I got free admission and did not need to pay the $12 admission.
Estimated Time: 30 - 60 minutes.
On this 2026 visit I spent about an hour and went through the whole zoo twice.
SUMMARY
I rate Cosley Zoo as one star despite enjoying my time there. The one star rating is due to size and scope relative to cost. Cosley Zoo isn't merely a small zoo - I'd classify it as a tiny zoo. All the animals are local to Illinois state (other than the domesticated llamas) so there isn't anything exotic. As a result, the admission cost is pricey for what you get. If it was a free zoo, it would be an average but respectable two stars.
In Cosley Zoo's favor, the zoo is clean and well-maintained, the employees are friendly and hard-working, and the animals seem well taken care of. Most of the guests seem to be parents with little kids, so the smaller scale of the zoo is perfect for a brief outing and it's equivalent to going for a walk in the park. Also, young children probably don't care as much what types of animals they are seeing.
The cost issue can be sidestepped if you are a member of a zoo participating in the AZA reciprocity program at the 100% level.
To summarize, Cosley Zoo is quaint and cozy. If you can get in for free, it may be worth a visit. Otherwise, it's unlikely to be worthwhile unless you are a local and/or have small children.
I did see most of the animals on exhibit except for a handful of the birds. It was also too early in the season for the butterfly garden. Cosley Zoo has about a dozen animals that are mainly used for educational purposes and can't normally be seen at the zoo (e.g. hedgehog, armadillo, macaw, and a variety of reptiles and invertebrates).
Comparing Cosley Zoo to other zoos:
5 stars:
4 stars:
3 stars:
2 stars:
1 star:
MAMMALS
Canada Lynx
Lynx canadensis
These raccoons were doing "what comes naturally to animals." One nearby parent was telling their kids that the raccoons were "friends." My response was "I think they're more than just friends...." 😹
It did make for some good pictures though!
Raccoon
Procyon lotor
Red Fox
Vulpes vulpes
Cosley Zoo recently got two new coyotes, who were gradually getting acclimated to their habitat. Last year, their 12 year-old coyote Wiley passed away so I did not get to see a coyote on my prior visit.
Coyote
Canis latrans
North American Porcupine
Erethizon dorsatum
Domestic Rabbit
Oryctolagus cuniculus domesticus
White-Tailed Deer
Odocoileus virginianus
Llama
Lama glama
Norwegian Fjord Horse
Equus caballus
Falabella Miniature Horse
Equus ferus caballus
Baby Cow
Bos taurus taurus
Guernsey Cow
Bos taurus taurus guernsey
Miniature Donkey
Equus asinus
Montadale Sheep
Ovis aries aries montadale
Nubian Goat
Capra hircus
Guinea Hog
Sus scrofa
BIRDS
Sandhill Crane
Antigone canadensis
Great Horned Owl
Bubo virginianus
Red-Tailed Hawk
Buteo jamaicensis
American Kestrel
Falco sparverius
Blue Jay
Cyanocitta cristata
Killdeer
Charadrius vociferus
Turkey Vulture
Cathartes aura
Redhead Duck
Aythya americana
Wood Duck
Aix sponsa
Welsh Harlequin
Anas platyrhynchos domesticus
American Pekin
Anas platyrhynchos domesticus
White Crested Duck
Anas platyrhynchos
Mallard
Anas platyrhynchos
Chicken
Gallus domesticus
REPTILES
Three-Toed Box Turtle
Terrapene carolina triunguis
FLORA
Probably Siberian Squill
Scilla siberica
Probably Trumpet Daffodil
Narcissus 'Dutch Master'
Probably Narcissus 'Jacqueline'
Narcissus poeticus
OTHER
Butterfly Garden (out of season)
Turtle sculpture
Duck Pond Pavilion
Duck Pond
GIFT SHOP
Adventure Planet Red Panda Umbrella
$19.99
Assorted Wild Republic Plushes
Cosley Zoo Club Care Adoption Package
$65 includes:
Assorted Animal Pillows
Wild Republic Rabbit Mini Cuddlekins
Wild Republic Squirrel Mini Cuddlekins
Assorted Animal Pillows
Wild Republic Mini Hug'Ems
Adventure Planet Cheetah Plush
$49.99
WireWorx Beaded Animals
WireWorx Beaded Parrot
$31.99
WireWorx Beaded Hummingbird
$29.99
WireWorx Beaded Turkey
$39.99
On this 2026 visit, I bought the "Jelanii" Cheetah Little Critterz porcelain figurine. On my previous 2025 visit, I bought the "Lobo" Howling Wolf Little Critterz.
