what is the zip code for madisonville ky
Welcome to MADISONVILLE, KY 42431. 42431 is a sparsely populated, suburban zip code in Madisonville, Kentucky. The population is primarily white, and mostly married couples. At $88,500 the average home value here is a bit higher than average for the Madisonville area, so this probably isn't the place to look for housing bargains. The average family income here is $52,702/year.