The Hidden Valley neighborhood is a diverse one. Its residents identify as German, English, or Irish. There are also residents with Mexican or Italian roots. The population is almost evenly divided between male and female. The median age is 28 years. The majority of residents in Hidden Valley are married.
Most residents live in medium-sized to small homes. Almost all of these are owner-occupied. Most were built between the 1970s and 1999, but there are some homes that were built as far back as the 1940s. Hidden Valley's median home value is $196,800, a lot more than the average home in the state of Indiana.