Johnsonville is a charming residential subdivision on Big Coppitt Key in the Florida Keys, offering a peaceful island lifestyle just minutes from Key West. Homes in this area range from cozy single-family residences to updated properties with modern amenities, many featuring easy access to the water and outdoor recreation. The neighborhood's layout along avenues like A, D, and E provides a grid-like feel in a tropical setting, surrounded by mangroves and the Gulf of Mexico.

Community features emphasize privacy and nature, with residents enjoying the laid-back Keys vibe. Proximity to US-1 allows quick drives to Key West for dining, shopping, and entertainment, while local spots offer fishing charters and eco-tours. The subdivision's non-HOA status means homeowners have flexibility in property use and modifications, subject only to county regulations.

Notable aspects include its location at mile marker 9, making it convenient yet secluded. Recent real estate activity shows homes built around 2012-2014, blending historic charm with contemporary island design. The community fosters a close-knit feel among neighbors who value the natural environment and outdoor activities like kayaking or birdwatching in the surrounding keys ecosystem.