According to The Pell Grant, students who have a total family income of no more than $50,000 can apply for a Pell grant, though most Pell funding is awarded to students who have a family income of less than $20,000.
Pell grants are not awarded solely on income. You must be an undergraduate student (or a student pursuing an initial professional degree), meet residency requirements, be in a certificate or degree program from an eligible university, not have any student loans in default and maintain a drug-free record.
To meet residency requirements, you must be a U.S. citizen, national or eligible non-citizen. According to The Pell Grant, eligible non-citizens include permanent residents with an Alien Registration Card I-551, conditional permanent residents with an I-551C card or individuals who possess Arrival Departure Record I-94 from the Immigration and Naturalization Service with an asylum granted, parole, refugee or entrant from Cuba or Haiti designation.