Park Layne is a census-designated place in Bethel Township, Clark County, Ohio, United States. The population of the CDP was 4,248 at the 2020 census. It is part of the Springfield, Ohio Metropolitan Statistical Area. Park Layne became a CDP in the 1980 United States Census. On May 24, 2017, an EF1 tornado touched down and caused damage to several businesses in the community.