Age categories are determined by Lacrosse Canada (LC) and follow the Long-Term Athlete Development (LTAD) model as developed by the Lacrosse Canada LTAD Committee and adopted by the LC Box Lacrosse Sector.
These age categories each include two birth years, and are named based on the age that the athletes will turn in that calendar year. I.e., Under-15 will include athletes who will be under 15 years of age throughout the entire year.
While the goal is always to run divisions at each of these age categories, from time to time the Lacrosse Winnipeg Commission will deviate from the LC age categories for the purposes of facilitating quality play depending on registration numbers.
Female athletes playing co-ed may play in an age category that is one year younger than their birth year.
Exemptions may be made to the age category in which an athlete participates via application to the Lacrosse Winnipeg Commission using the Age Category Exemption Form.
| u7 | 2018/2019 |
| u9 | 2016/2017 |
| u11 | 2014/2015 |
| u13 | 2012/2013 |
| u15 | 2010/2011 |
| u17 | 2008/2009 |