Oakley is a city in Cassia County, Idaho, United States.

The city was named for William Oakley, the proprietor of a 19th-century stagecoach station located at a spring currently located about 2 miles (3.2 km) west of the present townsite known as Oakley Meadows.

[8][9] Oakley is located at the very southern limit of the Snake River Plain, and close to Goose Creek, between the Middle and Albion Mountains.

According to the United States Census Bureau, the city has a total area of 4.59 square miles (11.89 km2), all of it land.

21.4% of all households were made up of individuals, and 11.3% had someone living alone who was 65 years of age or older.

There were 257 housing units at an average density of 64.4 per square mile (24.9/km2).

26.1% of all households were made up of individuals, and 16.8% had someone living alone who was 65 years of age or older.

Oakley Pioneer Days is an annual even celebrating "the settling of the west".

The entire town is listed due to the number of stone and brick buildings that are over a century old.