Most New Jersey residents know someone who’s been diagnosed with autism spectrum disorder — nearly a third have a child relative with autism — but regular interaction with this population is far less common, according to a Rutgers-Eagleton Poll released Monday.

In the poll, which was conducted in collaboration with the New Jersey Autism Center of Excellence at Rutgers University, 8 in 10 New Jersey adults said they know someone who’s been diagnosed with the developmental disorder that affects communication and behavior.

Sixty-eight percent know an ASD-diagnosed child outside of their family and 48% know a diagnosed adult beyond their family, according to the poll. A child family member with ASD was cited by 31% of respondents, and an adult family member by 18%.

“Those who are a parent are more likely to know somone with autism than those who are not,” noted Ashley Koning, director of the Eagleton Center for Public Interest Polling.