One grant available to college seniors is the Pell Grant, according to CollegeScholarships.org. Seniors verify their eligibility for this grant by completing the Free Application for Federal Student Aid. This form helps estimate the student's level of financial need, the information on which the Pell Grant's eligibility and award amount is contingent. For those with enough need and who attend college full-time, the maximum award for this grant is $5,500 as of 2015.
Another grant available to college seniors is the Federal Supplemental Educational Opportunity Grant, notes CollegeScholarships.org. To qualify for this grant, the student must complete a FAFSA and already meet the eligibility requirements of the Pell Grant. If the student still has a high level of financial need after receiving the Pell Grant, he may apply for the FSEOG grant through his university's financial aid office. The amount of this grant ranges from $100 to $4,000 dollars, and students receive it on a first-come, first-serve basis due to the limited funds available.
Beyond these federal grants, each state offers its own grants to college seniors and other students who meet different criteria. CollegeScholarships.org provides a list of information about the state-specific grants available. These typically include special grants for veterans or current military members as well as disabled and minority students.