What age do you become a girl guide?

It depends on which Girl Guide organization you would like to join. Most Girl Guide organizations accept girls at the age of 4 or 5 and they can be girl members until ages 18 to 21. After that, they may be adult Girl Guide members.

For example, for Girl Guides of Canada the age groups are:

Sparks: 5-6

Brownies: 7-8

Guides: 9-11

Pathfinders: 12-14

Rangers: 15-17