Okay kiddo, imagine you have to go to school every day, but the school is far away from your home. So you need to take a ride every day to reach there.
Now, imagine a lot of people are in the same situation as you - they have to travel long distances to go to work or school. A commuter town is a place where many people live who have to travel to nearby cities or towns for their daily work or school.
These people usually have a house in the commuter town and take some form of transportation, like a bus or train, to reach their workplace or school. They come back to their homes in the commuter town after finishing their work or school.
Commuter towns can have everything that a typical town has - homes, schools, restaurants, and shops - but they do not have a lot of job opportunities. People who live in these towns go to other towns or cities for work.
A commuter town allows people to live in a more affordable and peaceful place outside of the busy and expensive cities or towns where they work.