Your 2018-2019 Colorado fishing license expires on March 31st.
Note: annual fees will change with the 2019-2020 season. The annual resident license has gone from $25 to $33. Senior license (ages 65+) and youth (ages 16-17) are now $8.
Licenses can be bought at retail locations or at the Colorado Parks & Wildlife website. For more information, including participating retail locations, go to the CP&W website.