Other villages in the municipality included Askeland, Austmarka, Bøvågen, Haugland, Sæbø, and Sletta.

The first element is rǫð which means "row", "ridge", or "line" (here in the sense that it is a "long island" sticking out of the ocean).

The official blazon is "Or, two oarlocks in pale sable" (Norwegian: På gul grunn to svarte årekeipar.).

Some of these objects have been found in several places in Radøy and the artifacts date back to the first century BC.

[12] The municipal council (Kommunestyre) of Radøy was made up of 25 representatives that were elected to four year terms.

The smaller surrounding islands of Toska, Bognøy, Fesøy, and others were also part of Radøy municipality.