K.L.
Unless you are looking for a private kindergarten that you will be paying for, you are not too late to start looking. If your son will be attending the public school system in your area, you just need to know which school's attendance boundary you are in for your local school district. You probably have a school in your neighborhood (or very close by). Call that school to confirm if that is the correct school for you based on your address and then find out when kindergarten registration is being held.
For private schools, the best way to determine where you would like your son to go is to call the school and arrange a visit. It is the only way you will know if you and your son will feel comfortable there. You can also ask about the cost of tuition so that you will know if it will fit your budget.
K.