In which U.S. county is the DC series Lanterns primarily set?

The DC series Lanterns is primarily set in Sheridan County, Nebraska.

The county setting surrounds the fictional town of Rushville, where Hal Jordan and John Stewart investigate a murder. Rushville is presented as a close-knit community with its own sheriff, Kerry, played by Kelly Macdonald. The local setting gives the series a rural American atmosphere that contrasts with the cosmic scale of Green Lantern mythology.

The story also includes some scenes set in Iowa, but Sheridan County is identified as the primary location. This geographic detail is separate from the production location: the series was filmed in Los Angeles, California, while its fictional events occur mainly in Nebraska.

Lanterns uses its setting to create a grounded detective narrative. Jordan initially believes the murder may be extraterrestrial, so the case gradually expands from a local crime into a mystery involving the Green Lantern Corps and its history.

Sheridan County is in the northwestern part of Nebraska. The series' fictional geography is not meant to relocate the Green Lantern Corps' cosmic headquarters; instead, it places the Corps' investigators in a recognizable American heartland environment.