 Corydon , with a 2000 population of 2 @,@ 715 , is the largest town in the county , the county seat , and center of economic activity . Palmyra , located on the northern edge of the county , is the second largest town and had a 2000 population of 644 . Lanesville is the third largest town with a 2000 population of 615 . Milltown had a 2000 population of 932 ; the town sits on the western border of the county and a majority of its population lives in Crawford County . The county 's other incorporated towns , Crandall , Elizabeth , Laconia , Mauckport , New Middletown , and New Amsterdam all have populations under 150 . 
