Cool Science Birthday Parties!

Children's parties in Seattle have never been better.  When you are looking for a unique and fun birthday party for children 4-12 yrs old, you have found a great location in Kids Science Labs. If you want a party your children will never forget, with hands-on activities all their friends will love, our parties are for you.  KSL parties are hassle-free for parents.  If you bring the food, we will do the rest!  Request more information below or call us (206) 402 5310.

Our parties are offered for children turning 4 yrs and up.  Younger siblings are always welcome to attend, and can enjoy our play area during the party.  

Every party includes a number of hands-on science activities for each child to engage with, while you spend time in our award winning eco-designed centers. These activities range from making polymers to experimenting with pressure (safely). At KSL parties, kids will have fun, learn, and celebrate your child's special day in an exciting way. Parents are often amazed that all the children are captivated for nearly an hour, but it makes sense when you think about it - understanding how the world around us works by experimenting with our hands is pretty cool.  Check out our reviews from parents here.

WE’RE HERE TO HELP! SUBMIT YOUR INFO BELOW AND WE WILL CALL YOU BACK. You can also reach us at (206) 402-5310.


In a perfect world, we’d all have enough time to plan fun birthday parties for our children. But in the real world, parents are stretched too thin on time (and let’s face it, energy) to come up with new birthday party ideas, organize party activities, and supervise the kind of fun birthday celebration their kids deserve. As parents ourselves, we understand the value in being able to relax and really enjoy your child's birthday. We've designed stress-free birthday party packages that allow moms and dads to make the most of their kid's special day. 

Birthday party planning is easy at Kids Science Labs. We handle all the details, set up & clean up, so when you arrive you can relax and enjoy your child’s birthday party. Whether you're celebrating the birthday of a preschooler, teen, or any age in-between, KSL has fun kids birthday party ideas that are perfect for your child!  Take a quick glimpse at our exclusive birthday party packages with fun party themes and cool birthday party ideas for kids. 

Party Packages

Mysteries of Science Party  

Our Mysteries of Science Party provides a variety of engaging hands-on science activities for children in attendance. Your child and their guests will enjoy a fantastic hands-on experience in this semi-private affair.   

Details here:

  • Up to 15 children ($20 per additional child)

  • 90 minute party (60 minutes of science)

  • Tableware

  • Set up & clean up

  • Goodie bags can be purchased ($5/child)



This party is so big that you will need the entire Kids Science Labs Facility!  Your child and their guests will enjoy a private party, filled to the brim with hands-on science to make their birthday an unforgettable experience.

  • Private Access to the Kids Science Labs classrooms, parent wi-fi area, and kids play area

  • Up to 30 children ($20 per additional child exceeding 30) (Max = 40 children)

  • Science goodie bags for up to 30 guests

  • Selection of 1 of our three themes (Colors & Light, Slime, Chemical Reactions & Explosions)

  • 90 minute party (60 minutes of science)

  • Party Lead and Party Manager

  • Tableware

  • Special Gift for Birthday Child from Kids Science Labs


Important Party Details

While we provide the entertainment, materials, and fun staff. Guests are responsible for food and drinks (remember, we are NUT-FREE and alcohol free facility). 

Reservations are accepted up to 120 days in advance. 

A $200 non-refundable fee is required to reserve your party time slot.  If cancelled more than 30 days in advance, we are happy to try to sell the party time slot to another interested parent and if so, you may apply your non-refundable fee towards science classes at KSL.  All prices and packages are subject to change without notice. 



If you are interested in hearing directly from our parents about our parties, here is what they have to say.