The location of Luggnagg is illustrated in both the text and the map at the beginning of part III of Gulliver's Travels, though they are not consistent with each other.

[1] The book's text states that Luggnagg is located about one hundred leagues southeast of Japan, but northwest of Balnibarbi and gives its position as 29°N 140°E.

[2] The page notes refer to Frederick Bracher's "Maps in Gulliver’s Travels" (1944–45),[3] which examines the problems raised by the maps in Gulliver's Travels, especially those accompanying Part III of the book.

The map also shows the port of Maldonada in Luggnagg, and the island of Glubdubdrib to the southwest,[4] while the text is clear those places are in Balnibarbi.

Notable among the inhabitants of Luggnagg are the struldbrugs, unfortunates who are immortal but suffer the infirmities of old age.