House M.D. is primarily set in which U.S. state?

House M.D. is primarily set in New Jersey.

The fictional Princeton-Plainsboro Teaching Hospital is located in New Jersey, and the series repeatedly establishes the state as House’s professional home. The setting connects the show to the Princeton area while allowing its hospital to remain fictional.

Many scenes were filmed in California rather than New Jersey. The exterior used for the fictional hospital was largely filmed at the Frist Campus Center at Princeton University, while other production work took place around Los Angeles. This filming history can make the show’s geographic setting easy to confuse with its production location.

New Jersey is also important because House’s team treats patients from the surrounding region and because the hospital’s name references Princeton and Plainsboro. The state is not merely an incidental location: it is built into the identity of the fictional institution and the show’s recurring world.