The solubility of potassium iodide in a propan-1-ol + water binary solvent Mixture was measured over the entire composition range from (0 to 1) mass fraction of propan-1-ol at (298.15, 303.15, 308.15, and 313.15) K. The densities of the saturated Solutions are also reported. The equation given for the Solubility of the saturated solutions is correlated with the mole fraction of propan-1-ol and the temperature and density of the solution.