River Bluff is a home rule-class city in Oldham County, Kentucky, United States.

According to the United States Census Bureau, the city has a total area of 0.2 square miles (0.52 km2), all land.

As of the census[5] of 2000, there were 402 people, 138 households, and 126 families residing in the city.

There were 140 housing units at an average density of 698.3 per square mile (269.6/km2).

6.5% of all households were made up of individuals, and 0.7% had someone living alone who was 65 years of age or older.