Numbers

Q. What is the correct way to report ages of people? In what cases, if any, would it be acceptable to use numerals? Our company’s style guide follows CMOS, but suggests using figures in reporting ages. I appreciate your guidance.

A. It’s usual to use numerals in lists, in tables, and in any context where an abundance of numbers makes spelling them out awkward.

[This answer relies on the 17th edition of CMOS (2017) unless otherwise noted.]