A dispersion composition including a fluorine-containing ion exchange resin having a repeating unit represented by the formulae (1) and a repeating unit represented by the formulae (2), and having an equivalent weight of 400 to 1000 g/eq; and a solvent comprising water, wherein Z represents H, Cl, F, or a perfluoroalkyl group having 1 to 3 carbon atoms; m represents an integer of 0 to 12; and n represents an integer of 0 to 2, and wherein an abundance ratio of a resin having a particle size of 10 μm or more in the fluorine-containing ion exchange resin is 0.1% to 80% by volume.