Add the canned coconut milk, sugar, lime zest, and fresh lime juice to a medium mixing bowl.
Whisk until the sugar is fully dissolved and the mixture looks smooth and creamy.
Taste the mixture. Add a little more lime juice if you want a brighter, tangier flavor.
Pour the coconut lime mixture into popsicle molds, leaving a little space at the top for expansion.
Insert popsicle sticks into each mold.
Freeze overnight, or for at least 8 hours, until completely firm.
To unmold, run the outside of the popsicle molds under warm water for a few seconds, then gently pull out the popsicles.
Serve cold and enjoy right away.