Allen Parish is in Cajun Country Louisiana. Of the 64 counties in the Pelican State, Allen Parish ranks 28th in terms of size (765 square miles). Recent Land Network data totals roughly 1,000 acres of residential land and property for sale in Louisiana's Allen Parish, which is valued at a combined $2 million. The average price of residential land for sale in Allen Parish was $195,144. Browse all residential land and rural property for sale in Louisiana to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.