Middletown is a cdp located in Lake County, in the state of California (CA), United States. Nestled in the Pacific division of the West region, it covers an area of 2.6 square miles (7.0 km²) and sits at an elevation of 1105 ft. With a population of approximately 1,020 residents, Middletown offers a peaceful, rural atmosphere.
The town's population is composed of about 52.45% males and 47.55% females, and it has a population density of 395.35 people per square mile (152.65/km²). Middletown lies at a latitude of 38.75 and a longitude of -122.62, operating in the UTC-8.
Locals reflect a blend of American ancestry, with roots primarily in United States (4.9%), followed by English (13.6%), German (21.1%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 95461.