Best Kids Birthday Party, Easy for Parents

Creating memorable birthday experiences are our specialty, with personalized slimes and fizzing chemical reactions, your kid’s birthday party in Chicago or Seattle offers the one of the best stem programs for kids, packaged in the most beautiful location available anywhere in the U.S,

A Kids Birthday Party at KSL is memorable and full of awesome science

Kids Science Labs offers unique science party experiences that kids love and parents appreciate!

A Kids birthday party is a private affair that are full of personalized child experiments that delight kids and engage our families & their guests in Chicago and Seattle

Join KSL for Free and save $10 on your five-star party experience —>

Science Birthday Party Ideas at KSL

Looking for kid’s birthday party ideas that are as unique as they are unforgettable? Look no further! Located in convenient centers and surrounded by free parking, Kids Science Labs offers an unparalleled celebration experience for both kids and parents.

Step into our expansive hands-on science labs, where creativity knows no bounds and fun is always on the agenda. Our team will engage you and all of your guests with personalized slimes, exciting chemical reactions, and color changing experiments that will create wonderful memories for your family.

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Our kids birthday parties are jam-packed with hands-on science experiments that not only entertain but also educate children aged 4 and up. With private access to our state-of-the-art classrooms and expert party staff, your child's celebration will be an unforgettable experience for all.

Read below or call our Birthday Party Support Center at 773 557 7982

Kids Birthday Party Packages in Chicago and Seattle

“I cannot say enough what an incredible job the team did with the party. The children were engaged and had a blast with the experiments. The parents who accompanied their kids were so impressed that they are still talking about the party”
— Cathy

Kids Birthday Party Venues Near Me

At KSL, a kids’ birthday party is offered for children turning 4 years and up in convenient locations nearby. Our kids birthday parties offer up to 1 hour of hands-on science activities for your guests, that are hand-picked to safely engage and unlock science that kids love, and best of all, we clean up the science mess. Learn more about our kid’s birthday party reviews

Big Birthday Blowout (BBB) Kids Birthday Party

Get ready for a super fun and unforgettable kid’s birthday party where your young scientist is the star! Our Big Birthday Blowout (BBB) takes over the entire Kids Science Labs facility for a private, hands-on, science packed celebration.   Known for its all-inclusive, low-stress, high engagement kids birthday party, here is what makes this bash a blast:

  • 100% Private Party in our 3,000sf lab for 90 minutes

  • Up to 20 young scientists experimenting and having fun ($30 for each additional child)

  • Six (6) of our personalized slimes, chemical reactions, and and color-changing science experiments to delight every child

  • A Party Host, Lead Scientist, & Party Assistant to make sure everything runs smoothly

  • Slime and STEM Kits included for every child guest as party favors to take home

  • KSL takes care of setup/cleanup, so you can enjoy the celebration

This exciting, curious, and creative party is perfect for your budding scientist’s big day. Call us to reserve your space today at 773 557 7982

MYSTERIES OF SCIENCE PARTY(MOS) Kids Birthday party

Dive into an exciting science adventure with our Mysteries of Science (MOS) Party! Crafted for smaller groups, this party is packed with science fun and memorable moments such that your child and their guests will enjoy a five-star experience of exciting family-friendly experiences. You and your guests will explore the wonders of slime and fizzing reactions, while having a blast. Here is what you can expect from our MOS Party

  • 100% Private 3,000sf Science Party, 90 minutes

  • 10 child scientists ready for discovery, ($30 per additional child)

  • Four (4) mind-blowing science experiments

  • Scientist to lead kids in all experiments

  • Optional STEAM Kits ($10/child) may be added to keep the fun going long after the party ends

  • KSL takes care of setup/cleanup, so you can enjoy the celebration

A MOS Party is the perfect way to mix science, fun and celebration for your child’s birthday

“The staff was great, both when booking and also during the party, and made sure the entire event was seamless and worry free for us”
— Sanjay

Birthday Party FAQs about KSL

Collapsible FAQ
What exactly is Kids Science Labs?
Since 2010, we have delivered the most outstanding hands-on science programs, including camps, parties, and at-school STEM Labs that unlock the curiosity and creativity in every child. We have beautiful retail locations in Seattle and Chicago that support our world class hands-on science programs everywhere in the U.S.
How much is birthday party at KSL?
Our personalized party packages range from $625-$1,000+ for more personalized and unique science experiences for groups of to 40 students, including 100% private access to our entire 3,000sf beautiful centers. All adult guests are free
What is included in your party packages?
We provde a scientist to lead all experiments with kids, full access to our beatuiful center, privacy as you will be the only party, up to 60 minutes of tailored hands-on science experiments, and a separate discovery science and celebration room so that adult guests and kids can engage to the fullest
Are there any restrictions on my food and cake?
You may bring food and cake from your preferred caterer, restaurant, or baker. Please know that for the safety of all of our guests, we try to maintain a preanut and tree-nut free facility, and ask our families not to bring nuts of any kind into KSL. Ask us for our recommendations!
Can I bring my own decorations?
Absolutely. Our party hosts will help you put up any special balloons, tableware, or banners in the celebration room.
What does Kids Science Labs provide?
We lead all science experiments and provide all science materials, tablecloths, plates, napkins for the food. Guests are welcome to bring decorations and special theme tableware.
What is in your STEAM Take Home Science Kits?
Our STEAM Kits are inside a branded 5x8x4 box, containing four hand-crafted experiments, includng one pair of colorful science googles, two science tools for kids, and three chemical reaction experiments that kids love but also won't mess up your house.
How do I book a party?
It's easy. Select a day & time that works on any upcoming weekend, and provide a credit card for the $100 deposit, that is credited against the balance of the party.
What if I need to cancel or reschedule my party?
We understand. We offer flexible reschedule options to any available future party date & time at the center. You may upgrade your party up until 3 days prior to the event date. If you need to cancel, the deposit is non-refundable. If the cancellation is within 7 days of the event date, only an event credit is avialable that may be used for any other service at Kids Science Labs
What do parents do during the party?
Kids Science Labs offers drop-off parties for kids 4+ with advance registration. Our centers are beautiful and often parents relax and laugh in the celebration room, or watch their kids engage each slime, chemical reaction, and color-changing experiments while kids are in the Creativity Lab. Occassionally, they too want to make slime, and we support the kid in everyone!
Are your partes worth it?
Yes. If you are seeking an awesome private and memorable science party, where kids have fun and we clean up the mess, that's KSL. With hundreds of five-star reviews and private access to the entire 3,000sf KSL, our engaging staff provide families with a unique experience that celebrates the specail occassion.
What other programs does KSL offer?
Glad you asked. We offer at-school STEM Labs that unlock the curiosity with classes at schools, the best Science Summer Camps, Convenient Day-off Camps whenever school is out, Field Trips at KSL for PreK-8th grade

Kids’ Birthday Party REVIEWS

Parents appreciate the care that we take in providing a wonderful party atmosphere and equally impressed that kids, from PreK to Teens are captivated by our hands-on science for the duration of your child’s birthday party. Rather than listen to us, listen to the hundreds of five-star (*****) reviews from parents discussing every detail of our parties below:

Collapsible FAQ
No Stress for Parents, Exciting for Kids.... (read more of this review)
I can't express how happy I am that I choose this place for my daughter's birthday! Vanessa the party host was absolutely amazing! She was such a big help & she kept the kids so engaged! I'd definitely recommend this place to anyone!!! And my daughter loved it so much she wants to do a summer camp here! Definitely will be checking it out!!!!! Thank you so much for a great non stressful experience!!!!
Exceptional Service, Great Party for Kids.... (read more)
This place is exceptional. We just had our 4 year old's birthday party there and the entire experience was excellent. The staff is terrific and really knows how to keep the kids entertained (special thanks to Shegan for doing separate experiments with the birthday boy when he started getting grumpy). We loved it so much we signed all three kids up for classes and they're already looking forward to going back. - Justin R
A review of Big Birthday Blowout Party @KSL....(read more)
Big Birthday Blowout PartyI typically do not write reviews. Don't have the time with 3 litle kids to do much less drive them all around the city for a class or party etc.....The reason I am taking the time to write one is because I had my son's 7th birthday party at Kids Science Labs and really feel that the establishment is excellent. From the owner to the staff to the facility it was top notch!!!! They were not only extremely accommodating but the kids had a riot. The teachers were wonderful, engaging, and really good with the little ones. One of the kids was shy and not participating in the group experiment and the owner took him to the side and was sitting on the floor showing him some science experiment and he loved the one on one. As a mom, I can't tell you how endearing it was to see a grown man sitting cross legged on the floor taking the time to include a kid who was too shy to incude himself. Most facilities don't personalize the experience the way that he did. We have been to EVERY birthday party imaginable. This is truly a one of a kind experience. THANKS, Kids Science Labs and we will be seeing you again. - L. K. Kim
Sibling Parties at KSL, Twice the Fun....(read more)
What a cool place....We had our kids 5 and 7 year old birthday party here.....There were 35 kids in total..I have already received several emails from parents talking about how their kids can't stop talking about the science experiments and want to take a science class here. They allow you to choose what types of experiments you would want to do. We watched the video of the party last night and the look on the kids faces during the volcano is priceless. I strongly recommend you check this place out...Either for a party or for the science classes.... The staff is fabulous! Kim
Beyond the party, KSL inspired my child....(read more)
When we hosted my daughter's b-day party at KSL and we had the pleasure of watching 11 kids ooh and aaah all in the name of science. But's what's even better than the squeals of excitement is that they are actually learning. After my party, my 8 year old daughter attended KSL for over a year. KSL is not just a class. It's a place where kids are encouraged to ask questions, explore, and have fun all while learning science. I believe this is made possible by the highly knowledgeable staff and experiment friendly building. Whether they are throwing objects to learn about gravity, making boats to discuss buoyancy, or drawing on the walls, the students are learning. I wish more places were as innovative as KSL, because I believe that my daughter's love of science has and will continue to grow because of their classes. In a world where science is getting pushed to the back of education, it's good to see a program that promotes science in both girls and boys. Don't hesitate, sign your child up today! - Kim M.
A wonderful party and more.... (read more)
Thank you for the wonderful party today! Grace and Wyatt both loved it and we loved that it was fun for the kids and fun for the parents (and easy for us)! We think Kids Science Labs is an extraordinary opportunity for our kids to get exposed to science at an early age and you are achieving your goal of teaching kids that science is fun! We feel really lucky to be part of your classes. Thanks again, Katherine and Jason
My 5yr old loved their KSL party.... (read more)
Recently we held a birthday party there for my 5 year old and all I can say is wow! The kids had a blast. Their parents were very impressed with the party and Kids Science Labs as a whole with some signing up for classes immediately after the party. The staff ensured that I did not have to worry about anything or even do anything other than enjoy myself at the party. If you are around the area, give it a try and you won't regret it.. KSL is the best. - T.S.

Awards and Media Kit for Kids Science Labs