Aurora is a city in Marion County, Oregon, United States. It was founded as a religious commune in 1856 by Dr. William Keil who named the settlement after his daughter. The population was 918 at the 2010 census. It is part of the Salem Metropolitan Statistical Area.

According to the United States Census Bureau, the city has a total area of 0.48 square miles (1.24 km²), all of it land.

The Pudding River flows northward, just east of Aurora.

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F (22.0 °C). According to the Köppen Climate Classification system, Aurora has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.

As of the census of 2010, there were 918 people, 336 households, and 256 families residing in the city. The population density was 1,912.5 inhabitants per square mile (738.4/km²). There were 349 housing units at an average density of 727.1 per square mile (280.7/km²). The racial makeup of the city was 89.7% White, 0.5% African American, 0.9% Native American, 0.3% Asian, 6.3% from other races, and 2.3% from two or more races. Hispanic or Latino of any race were 10.9% of the population.

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