Ivanhoe is a census-designated place in Sampson County, North Carolina, United States. The population was 198 at the 2020 census. The area of Sampson County that contains present-day Ivanhoe was first settled by the Scots in 1739, who travelled northwest through the lower Cape Fear Valley. The Scots stopping in Ivanhoe discovered a cash crop in abu…Ivanhoe is a census-designated place in Sampson County, North Carolina, United States. The population was 198 at the 2020 census. The area of Sampson County that contains present-day Ivanhoe was first settled by the Scots in 1739, who travelled northwest through the lower Cape Fear Valley. The Scots stopping in Ivanhoe discovered a cash crop in abundance; the longleaf pine. The local economy soon consisted of tar, charcoal, turpentine, and timber. The Black River served as their connection to the seaport; located first at Brunswick Town and later Wilmington.