While your son is an adult, he is considered a qualifying child and will be able to be claimed as a dependent on your return. In his situation, because he is a full-time student, under the age of 24, he lives with you and even though he works part-time, he probably does not provide more than half of their own support.
Here is a link to a TurboTax Article with the rules for Claiming Dependent on Taxes.
Rules for Claiming Dependents on Taxes https://turbotax.intuit.com/tax-tips/family/rules-for-claiming-a-dependent-on-your-tax-return/L8LODb...
