As in most farming villages, four-fifths of Chienkung's population of 1,200-plus households is made up of the elderly and of children. Young people make up no more than one-fifth of the village population.
農村少人國社區裡依照興建的先後，有因種香蕉致富的洋房式「香蕉屋」，有西瓜大賣時期蓋出來的瓦房「西瓜屋」，有子弟外出賺錢回來改建的水泥式「外勞屋」，還有回鄉養老別墅型的「退休屋」，建功村村長鍾展雄以他獨特的歸類來介紹建功村。