It is bordered on the north by Iberville and Ascension Parishes, on the east by St. James and Lafourche Parishes, on the south by Terrebonne and St. Mary Parishes, and on the west by St. Martin and Iberia Parishes. The southern tip of the parish is about 25 miles and an extreme width of about 18 miles. The total area of the parish is 236,962 acres, of which 21,654 acres is water. Many thousands of acres are flooded, however, because of their low elevation and lack of adequate outlets. Most of the flooded soils are in woodland.
Sugarcane is the main crop.
In proportion to its area, Assumption Parish produces more sugar than any other parish in Louisiana. Most of the soils in the parish not subject to flooding have been used in the production of sugarcane. There are many home gardens since the rich loamy soil is well suited for vegetable crops. The original inhabitants who lived along the banks of our Bayou are said to have been the Chetimaches Indian Tribe , Washas , and Chawashas . For the archaeologist, there are the mysterious Indian mounds still found in this parish in the interior around Lake Verret.