You can definitely find someone who teaches violin to younger kids. Schools often put age limits on things fir ridiculous reasons (I played tenor sax at school, wasn't "allowed" to in yr 7 or 8 because of my size, In year 8 Mum put her ffoot down and sent me to school with a tenor declaring that she wasnt paying hire fee for an alto when we had a decent tenor sax at home, but I digress).
To me, and a lot of musicians/music teachers, starting young is better, and at a younger age it's 90% of.the time going to be about feeling rhythm and appreciating music more than technique, but that can set a very strong foundation for later years.
Feel free to pm me about anything, I have a couple of friends who play violin, I can ask their opinion today
