What is the name of the fictional county containing Radiator Springs in Pixar’s Cars?

Radiator Springs is located in fictional Carburetor County in Pixar’s Cars.

The county name appears in the film’s setting and helps establish Radiator Springs as a small community in the American Southwest. The town is connected with U.S. Route 66, the historic highway that once carried travelers across the country before newer roads diverted traffic away from it.

Cars uses fictional geography alongside real American road history. Radiator Springs itself is not a real town, but its design draws on Route 66 communities and landmarks, including roadside businesses, desert scenery, and the decline caused by highway bypasses.

Carburetor County is easy to confuse with the town name or with the film’s car-themed vocabulary. Radiator Springs is the community, while Carburetor County is the larger fictional county surrounding it. This distinction separates the setting’s local place name from its broader regional label.