People of all ages, interests and skill levels can find the fitness classes, family activities and group interests they need to lead active, vibrant lives.


Train with friends, lose weight, build strength, try a new class, and take care of the whole you. We're here to help you get healthier and have fun while doing it.

Find a Program

Fitness Classes

The Y offers hundreds of free classes led by trained, responsive, and fun instructors. Try indoor cycling, zumba, yoga and pilates, water exercises, and more. Check the schedule and reserve your space today!

Personal Training

Whether your goal is weight loss, muscle gain, training for an event, getting ready for that high school reunion, or just looking for a more healthy lifestyle, the Y’s certified personal trainers can help you achieve those goals safely, efficiently, and with the support you need. Register now!

Functional Strength & Conditioning

The Y offers a functional strength and conditioning class for all fitness levels.  Certified instructors will lead you through everyday functional strength movements and conditioning exercises that will enhance your fitness goals and increase your performance levels. Learn more today!

Healthy Lifestyles at the YMCA

The Y is committed to ensuring healthy living across the region through programs that support those who’ve been diagnosed or are at risk for chronic diseases such as cancer, diabetes, Parkinson’s, high blood pressure, and obesity. Check out our programs to learn more!

Complimentary Fitness Orientation

Whether you’re new to exercise or in tip-top shape, the Y offers a 30-minute complimentary fitness orientation with our experienced fitness staff. Let us help you get started on your journey to a healthier lifestyle with a plan customized to your goals.

The Y strives to help all ages learn how to swim so they can stay safe around water, have fun and learn the skills needed to make swimming a lifelong pursuit for healthy living.

Swim Lessons

Swim lessons at the Y focus on learning vital water safety skills and stroke development through a progressive swim lesson curriculum. Swimmers develop self-esteem while creating positive experiences that last a lifetime.


Water Exercise

Utilize the resistance and buoyancy of the water to improve cardiovascular fitness, strength, and flexibility. Instructors lead small groups through water choreography and resistance exercises. 


Recreational Swimming

Drop into our pool for lap swim, family swim, or recreational swim. Check the pool schedule to find a time that works for you and your family. 


Work in Aquatics

The Y offers lifeguard and swim instructor certification courses to give you the tools needed to be successful. Join our aquatics team today!


Whether it’s gaining the confidence that comes with learning a new skill or building positive relationships that lead to good character and teamwork, participating in sports at the Y is about building the whole person, from the inside out.

Traditional Youth Sports

The Y offers year-round team sports for kids of all ages and skill levels. Every child plays at least half of every game. We welcome Y members and non-members to participate, practice and play.  Most sports are offered in 8-week sessions with one game and one practice per week for children K-8. Preschool sports typically have one practice per week with a scrimmage at the end of the season.  

Sports offered at this branch include: Basketball, Soccer, & Volleyball.

Register for Sports

Martial Arts

Martial arts teaches students to strengthen their bodies and the learn the value of hard work, discipline, honor, integrity and respect. Instructors are highly skilled and provide an encouraging, non-intimidating, and family-friendly environment for students of all ages - while making class fun! Tae Kwon Do combines combat and self-defense techniques with sport and exercise.



Y gymnastics offers many positive physical benefits and improves confidence and self-esteem! Programs begin for youth as early as 12 months old as a parent-child class and continue through 12 years old.


The values and skills learned early in life are vital building blocks for a successful adulthood, and we believe all kids deserve a strong start and a safe place to grow. Parents trust the Y’s child care programs to support and nurture their children from infancy through the teen years and help them become strong, capable and engaged young people.

Summer Camp

At Y camp, kids have the opportunity to explore, find new talents, try new activities, gain independence, and make lasting friendships and memories. And, above all, it’s so fun! We offer camp throughout the entire summer! Our camps are designed for a wide variety of conventional interests that include arts & crafts, group games, nature exploration, swimming, field trips and more. Camps are themed weekly. Most camp activities are held outdoors with indoor activities provided based on the day and theme. Day campers are divided into groups by the grade level they are entering in the fall. Registration opens on December 26 for the following summer. 

Learn More

School's Out Camp

We offer Schools Out Camp on the days school may not be in session. Campers have fun and stay busy with arts, crafts, group games, sports, swimming and much more!


At the Y, teens feel welcome and have proven success.  We offer activities and programs for teens that provide them with academic assistance, employment opportunities and other life skills, all while having fun! 

Leaders Club

Leaders Club is a program for teens, ages 13-18 that provides opportunities for personal and professional development. Teens plan out service projects, discuss upcoming events and trips, and vote on which types of development opportunities they would either like to attend or bring into their future meetings. Leaders elect officers on an annual basis who serve as club president, vice president, treasurer, and secretary. These officers have additional responsibilities and assist their advisor to support their peers and ensure the success of the club.


Youth and Government (YAG)

YAG provides students the opportunity to experience the democratic process and develop the leadership skills needed to become citizens of a participatory society.

Youth and Government promotes:

  • An understanding of local, state, national, and international concerns
  • Research, study, and debate on public issues
  • Exploration of careers in public service
  • Interaction with adult and youth leaders involved in decision-making processes
  • An understanding of political systems and the forum they provide for the effective and peaceful resolution of issues and concerns
  • Appreciation for the diversity of viewpoints on public issues and a respect for ideas, beliefs and the positions of others
  • Demonstration of citizenship responsibilities and leadership roles  essential to the health of a participatory democracy


Are you looking for a space for an upcoming event or birthday party? Celebrate at the Y! The O'Fallon Illinois YMCA is the place to be for a special event! Host your next bridal shower, baby shower, birthday party, or any other special gathering here with us!


All parties are held on Saturdays from 2-4 pm.


We are committed to providing a fun entertaining atmosphere for your birthday celebration, for up to 25 guests. The party will start with your time in the designated party area for treats and birthday fun, the remaining hour will be for your activity in either the pool or children center - depending on your purchased party.


Children Center Party: This party is designed for ages 6 years and under. This party includes one hour of playing in the children center followed by one hour in the pool viewing area for your birthday treats.

Splash Party: This party is designed for ages 3 years and older. The party includes one hour of free swim followed by one hour in the pool viewing area for your birthday treats.

Nerf Party: This party includes one hour in the Nerf area to play Nerf war games and one hour in our party area for birthday snacks. Nerf bullets are provided.


  • $200 for Y Members
  • $250 for Non-Members


All reservations should be made at least 2 weeks in advance and no more than 3 months in advance. If the reservation is made less than 2 weeks before; no late reservations will be accepted. Reservation requests are taken at the front desk, and will be approved by the Program Director. The Program Director will contact you within 72 hours to confirm your party and take payment over the phone. If you need to cancel your date, we must be notified within 72 hours of your party. There are no refunds, but we are happy to reschedule the party for a later date. 

Download Party Registration Form

Fore more information or questions, please contact the Welcome Center at 618-628-7701 or reach out to a Party Director below.



The Y's success relies significantly on the generous volunteers who donate their time and talents to make a difference in the community. When you volunteer at the Y, you are joining more than 5,000 other volunteers taking an active role in bringing about meaningful, enduring change right in your own neighborhood. 


The Y is a great place to build relationships and connect with members of your community. We offer day trips, monthly potlucks, clubs -- for games like bridge and chess, and so much more for those looking to get involved socially and make new friendships.

Learn More


We offer certification opportunities year-round for CPR/AED, First Aid. Lifeguarding courses are typically offered in the winter and spring. In addition, Safe Sitter training courses are available year-round.

Register Now

Kids Night Out

At the Y, we know parents need a break from time to time. With Kids Night Out, parents enjoy a night out while kids engage in fun and safe activities at the Y, including games, crafts, swimming, food, and more!

Register Now




Check Out Our YMCA Healthy Living Blogs

Find health and wellness advice from our Y experts and learn about new initiatives throughout the Gateway Region YMCA.