The measure in Jackson County in southern Oregon, garnering "yes" votes from nearly 66 percent of voters there, has drawn national attention and more than $1 million in campaign funding to the community, which has just 117,650 registered voters.
The results are still unofficial and will likely not be certified for nearly three weeks, according to Jackson County Clerk Chris Walker.
The ban is supported by a coalition of more than 180 farmers and community members, who have been pushing for the vote on the issue for more than two years.