Dunnigan is a small unincorporated community located in Yolo County, California. It is situated near the intersection of Interstate 5 and State Route 16, making it easily accessible for travelers. The area is primarily agricultural, with farming being a significant part of the local economy. The community has a few essential services, including a post office and local businesses. Dunnigan is known for its rural charm and close-knit atmosphere, attracting residents who appreciate a quieter lifestyle away from larger urban centers. The surrounding landscape features fields and open spaces typical of the Sacramento Valley.