Pine Harbor is an unincorporated community and census-designated place in Marion County, Texas, United States. Its population was 810 as of the 2010 census. In 2020, its population was 785.
According to the U.S. Census Bureau, the community has an area of ; of its area is land, and is water.
Pine Harbor first appeared as a census designated place in the 2010 U.S. census.
As of the 2020 United States census, there were 785 people, 266 households, and 177 families residing in the CDP.