Prairie du Rocher is a village in Randolph County, Illinois, United States. The population was 613 at the 2000 census. It was founded in 1722 by the French and its name roughly translates to "land under the rock" in French.

Geography

---

Prairie du Rocher is located at (38.081755, -90.096243). It is approximately 40 miles south of St. Louis, Missouri. It has an elevation of 396 feet above sea-level and is situated underneath the Mississippi River bluffs.

According to the United States Census Bureau, the village has a total area of 1.5 km² (0.6 mi²), all land.

Demographics

---

As of the census of 2000, there were 613 people, 240 households, and 160 families residing in the village. The population density was 415.2/km² (1,076.2/mi²). There were 255 housing units at an average density of 172.7/km² (447.7/mi²). The racial makeup of the village was 99.02% White, 0.33% Native American, and 0.65% from two or more races.

There were 240 households out of which 39.2% had children under the age of 18 living with them, 52.5% were married couples living together, 9.2% had a female householder with no husband present, and 33.3% were non-families. 28.3% of all households were made up of individuals and 12.9% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 3.16.

In the village the population was spread out with 29.2% under the age of 18, 9.5% from 18 to 24, 27.2% from 25 to 44, 22.0% from 45 to 64, and 12.1% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 81.4 males. For every 100 females age 18 and over, there were 89.5 males.

The median income for a household in the village was $35,795, and the median income for a family was $44,659. Males had a median income of $31,750 versus $20,556 for females. The per capita income for the village was $14,771. About 9.3% of families and 8.3% of the population were below the poverty line, including 6.3% of those under age 18 and 14.3% of those age 65 or over.

History

---

Prairie du Rocher was founded in 1722 by French soldiers from nearby Fort de Chartres. A tract of land was donated to Pierre Dugue Boisbriant, the commandant and builder of Fort de Chartres, by the Royal Indian Company. The town was located under the fertile Mississippi River bluffs and provided food to New Orleans and other lower Louisiana Territory communities.

It is claimed to be the oldest town to continunally exist in Illinois. The only two older towns in Illinois - Kaskaskia and Cahokia - were each abandoned at some point during their history.

Following the British victory in the French and Indian War, many of the town's French residents fled across the Mississippi River to towns such as Ste. Genevieve and St. Louis to avoid British rule.

George Rogers Clark captured Prairie du Rocher for the United States of America during the American Revolutionary War in his campaign that eventually resulted in the capture of Vincennes, Indiana.

Prairie du Rocher was one of the few Mississippi River towns able to escape the flood waters from the Great Flood of 1993. After flood waters had engulfed Fort de Chartres, they were threatening the town of Prairie du Rocher itself. With only the Prairie du Rocher Creek levee protecting the town, the Army Corps of Engineers decided to break through the Mississippi River levee near Fort de Chartres to allow the flood waters to escape back to the Mississippi River channel. This innovative decision spared the main town from the flood waters.

Today Prairie du Rocher is a small village with a rich history. Mainly a farming town, Prairie du Rocher still has a few reminders of that history. Besides nearby Fort de Chartres, there are several unique and historic houses in the town, including the Creole House.

External links

---

References

---

• http://www.greatriverroad.com/stegen/randattract/pdr.htm

Randolph County, Illinois | Villages in Illinois