Oregon Township, Clark County, Indiana

Otisco is an unincorporated community in Charlestown Township, Clark County, Indiana.

Marysville is an unincorporated community in Oregon Township, Clark County, Indiana.

Nabb is an unincorporated community in Clark and Scott counties, in the U.S. state of Indiana.

Clark County is a county in the U.S. state of Indiana, located directly across the Ohio River from Louisville, Kentucky. At the 2020 census, the population was 121,093. The county seat is Jeffersonville. Clark County is part of the Louisville/Jefferson County, KY–IN Metropolitan Statistical Area.

Charlestown State Park is an Indiana state park on 5,100 acres (20.64 km2) in Clark County, Indiana, in the United States. The park is on the banks of the Ohio River, 1 mile (2 km) east of Charlestown. It was once part of the Indiana Army Ammunition Plant (INAAP), and was donated in separate parcels to the Indiana state government. In 1993, the state of Indiana was given 859 acres (3.48 km2), and in 1994 was given an additional 1,125 acres (4.55 km2) . When the park opened in 1996, it encompassed 2,400 acres (9.7 km2). With an additional 2,600 acres (10.5 km2) given by the INAAP in 2004, the park has 5,100 acres (20.6 km2), making it the third largest state park in Indiana. The park attracts nearly 200,000 visitors annually.

Devil's Backbone is a rock formation and peninsula formed by the flow of Fourteen Mile Creek into the Ohio River, and is currently situated in Charlestown State Park near Charlestown, Indiana and across the Ohio River from Louisville, Kentucky. According to local legend, on this bedrock ridge once stood a stone fortress that was built by Welsh explorers led by Prince Madoc sometime in the 12th century.The Backbone is believed to have been formed by the processes of glaciation where a combination of ice sheet advances, meltwater flows and a diversion of the Ohio River left an isolated bedrock ridge remaining between two valleys. Rose Island, an amusement park popular during the 1920s that was destroyed by the 1937 Flood, stood on this rugged peninsula, at the base of the ridge on a level area. Charlestown State Park hiking trails do not provide access to the Backbone, but a loop around the old Rose Island site passes below the ridge. There is another location by the same name near Fort Ritner, Indiana, east of Bedford.

Rose Island is an abandoned amusement park near Charlestown, Indiana, situated on a peninsula (the "Devil's Backbone") created by Fourteen Mile Creek emptying into the Ohio River. It was a recreational area known as Fern Grove in the 1880s, mostly used as a church camp. It was so named due to the many ferns that grew there. The Louisville and Jeffersonville Ferry Company acquired it and developed it in order to increase the use of its ferry business. As Fern Grove it thrived on church picnics and family outings. The Great Depression hurt business, but its closure was due to damage caused by the 1937 Flood. Ten feet of water covered the park, and the damage was too much in order to rebuild for the 1937 season. Trees have fallen on the bridge and have destroyed all but the supports. Although covered with ivy, the swimming pool was still in excellent condition as late as 1980. Most of the buildings have left no trace, although a few brick formations remain.

Henryville is a census-designated place (CDP) in Monroe Township, Clark County, in the U.S. state of Indiana. The population was 1,905 at the 2010 census. Henryville is home to Indiana's oldest state forest, Clark State Forest, and birthplace of entrepreneur Colonel Harland Sanders, whose iconic image appears in the Kentucky Fried Chicken logo and Grammy award-winning bluegrass fiddle player Michael Cleveland.

Sylvan Grove is an unincorporated community in Clark County, Indiana, in the United States.

Charlestown is a city located within Charlestown Township, in Clark County, Indiana, United States. The population was 7,775 at the 2020 census.

Fourteen Mile Creek, shown as Fourteenmile Creek on federal maps, is a 22.7-mile-long (36.5 km) creek in Clark County, Indiana, close to Charlestown. It is so named because its mouth on the Ohio River is 14 miles (23 km) upstream from the Falls of the Ohio; similar to how Eighteen Mile Island, Twelve Mile Island, and Six Mile Island got their names. It is navigable for 2.9 miles (4.7 km) from the Ohio River. It is a State Heritage Program Site and a popular canoe trail. The creek was formed when glaciated water flowed through the unglaciated stream valley that is now the creek. It is lined by limestone cliffs, and the region is noted for its karst sinkholes, hidden waterfalls, and small caves. Due to the damming of the Ohio River, much of the creek is of the same elevation as the river. In fact, the creek sometimes appears to be flowing upstream when in fact rising waters from the Ohio push into the creek. Further upstream from the river, the creek is sometimes only a foot or two deep, which is why historically mills that used the creek had to use dams to keep a constant flow to run them. Bass, bluegill and catfish are the most common fish on the creek. The creek has seen much history. It is known that the Talligewi Indian tribe resided here. Many local mills used Fourteen Mile Creek for power, most especially Tunnel Mill. The popular Rose Island amusement park was situated where the creek and the Ohio River meet. During the time that the Indiana Army Ammunition Plant was in operation, the discharge of the Black Power Plant was treated by either a Sanitary Waste Treatment (SWT) plant or on Industrial Waste Treatment (IWT) Plant. Treated discharge from these plants, meeting all state and federal regulations and requirements, went into the Creek. Since the plant's demise, this is no longer a concern.