You're lucky I was waiting for a render to finish =) A google of "race distribution over age us" got me this: https://www.pewresearch.org/fact-tank/2019/07/3

You're lucky I was waiting for a render to finish =) A google of "race distribution over age us" got me this: https://www.pewresearch.org/fact-tank/2019/07/30/most-common-age-among-us-racial-ethnic-groups/