He remained in Gondor for the rest of his life. In the year 13 of the Fourth Age Pippin becames the 32nd Thain of the Shire, a position he held for 50 years before retiring in 63 of the Fourth Age and revisiting Rohan and Gondor with Merry. Faramir Took later marries Samwise Gamgee's daughter Goldilocks.

In the year 6 of the Fourth Age Pippin marries Diamond of Long Cleeve, when she is 32 and he himself is 37. Later he and Merry are instrumental in overthrowing Saruman's forces during the Scouring of the Shire. After the restoration of the monarchy he is knighted by King Elessar, who then grants him indeterminate leave to return home.

Gimli later recognizes his Hobbit feet under the Troll and drags him out of the battle, saving his life. During the last battle before the Morannon, Pippin manages to slay a troll before being knocked unconscious. During the final parley with the Mouth of Sauron, Gandalf instructed that members of each race that opposed Sauron be present at the parley, including Gimli for Dwarves, Legolas, Elladan and Elrohir (Elrond's twin sons) for Elves, and Pippin for Hobbits. Pippin was part of the Army of the West led by Aragorn that assaulted the Black Gates in a desperate gambit. Later, it is Pippin who rushes to fetch Gandalf when Denethor, driven to despair by Sauron's deception, sets out to burn his remaining son Faramir alive. This amuses Denethor, who accepts the Hobbit's offer and makes him one of the elite Guard of the Citadel. Meeting Denethor, Steward of Gondor, he volunteers for service to repay him for the death of Denethor's son Boromir, who had died trying to defend Merry and Pippin from the Orcs. Because of this, Gandalf separates him from his friends and brings him to the city of Minas Tirith. Looking into the stone, he has a terrifying encounter with Sauron himself. It is Pippin who picks up the palantír of Orthanc after Gríma Wormtongue foolishly throws it as a missile later, in an almost equally foolish act, Pippin actually steals it out of Gandalf's hands while the wizard sleeps. This indirectly results in the Ents being aroused to fight against Saruman. Upon their escape, he and Merry befriend old Treebeard, leader of the Ents. During a skirmish amongst his captors Pippin manages to cut his bonds using a sword held fast by a dead Uruk. While held captive by the Orcs, he leaves his elven broach of Lorien as a signal for Aragorn, Legolas, and Gimli. Remaining with the Fellowship until Amon Hen, Pippin is captured by Saruman's Uruk-hai along with Merry. It may be that this act was what alerted the unfriendly Orcs to the Fellowship's presence in Moria. When the Fellowship is passing through Moria, Pippin knocks a skull down a deep well. Gandalf, however, supports his and Merry's claims of friendship and loyalty, and Pippin is chosen as the last member of Fellowship. At Rivendell, Pippin is nearly denied the chance to accompany Frodo by Elrond who seriously considers using the youngest Hobbit as a messenger to the Shire. He is a worthy accomplice to Merry's plans, but shows his age as well he is still a cheerful, if occasionally thoughtless Hobbit, and is first to miss the comforts of Hobbit life. Pippin is six years younger than Merry, and thus is far younger than Frodo. The given summary is based on The Lord of the Rings as written by Tolkien. Spoiler warning: Plot or ending details follow.

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