How old is someone born in 1955?
Subtract 1955 from 2026 to get 71. If the person's birthday has not happened yet this year, subtract one, making the age 70. A full birth date is needed for an exact result in years, months, and days.
Why two ages are shown
A birth year alone does not include the month and day. During 2026, everyone born in 1955 turns 71, but before that birthday they remain 70.
About generation labels
Baby Boomer is a commonly used label for people born in this period. Generation boundaries vary by source and are descriptive, not scientific or legal categories.