This chart outlines by what age most children develop speech sounds.
This link from the American Speech and Hearing Association (ASHA) describes typical speech and language development.
This website is a nationally known and great resource for parents, students and teachers alike!
"There are rules for how we use language in different situations and with different people. Adults and children can have trouble with these social communication rules. Speech-language pathologists, or SLPs, can help (ASHA, 2018)."
Children learn to talk at different times. Learn the difference between being a late talker or having a language problem?
Early identification is important. This page describes early signs of speech/language impairment.