Highland County, Ohio

Founding: 1805
Parent counties: Adams, Clermont, and Ross

Namesake: The county's elevated terrain
Seats: New Market (1805–1807); Hillsboro (1807–)

Land area: 553 square miles

Population (2020): 43,317

Population (historic): 5,766 (1810); 25,781 (1850); 30,281 (1880); 25,416 (1930)

Periods of population growth: pre-1810–1880; 1890s; 1930–1960; 1970–2010

Subdivisions: One city; six villages; three CDPs; 17 townships

National Register listings: 28

Pre-1940 residences (estimated): 3,786 (19.6%)
Pre-1940 housing survival rate: 52%
Pre-1860 housing survival rate (1940): 20.7%

Farm housing in disrepair (1950): 12.1%

Nonfarm housing in disrepair (1950): 10.6%
Average farmhouse value (1930): $1,159
Average outbuilding value (1930): $872
Average farmhouse size (1940): 6.3 rooms
Number of farms (1920): 3,338
Average farm size (1920): 88.7 acres
Sources of settlement: Virginia, Pennsylvania, Northern Ireland, and France
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Hillsboro

Named for: The city's rolling terrain

Founding: 1807 (platting); 1809 (post office)

Population (2020): 6,481

Population (historic): 220 (1810); 1,021 (1840); 3,234 (1880); 4,040 (1930)

Periods of population growth: 1807–1900; 1910s; 1930–1980; 1990–2010
Pre-1940 residences (estimated): 967 (29.7%)

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Outstanding Buildings

1. Moses Calvert House (c. 1825). 3828 Milburn Road. Brush Creek.
2. Joseph Bell House (c. 1825). Slate Hill Road, north of Bell Road. Brush Creek. Razed.
3. *Anthony Eubanks Farm (c. 1860). 4949 State Route 41. Brush Creek. Italianate.
4. *Ezekiel Hirons Farm (1847). 2049 Buford–Bardwell Road. Clay. Greek Revival/Gothic Revival.
5. *Sanford Moler House (c. 1870). 3317 Certier Road. Clay.
6. John Cramton House (c. 1880). State Route 134, north of Anderson Road. Dodson. Eastlake. Razed.
7. Tavner Laymon Farm (c. 1850). 819 Wise Road. Dodson. Greek Revival.
8. *William Wright House (c. 1820). 10484 Hardin’s Creek Road. Fairfield.
9. Henry Pavey Farm (c. 1850). 12695 Stafford Road. Fairfield. Greek Revival. Razed.
10. David Woodmansee Farm (c. 1850). 6514 State Route 28. Fairfield. Greek Revival/Italianate.
11. Joseph Woodmansee House (c. 1830). 6815 State Route 28. Fairfield.
12. Ruel Beeson House (c. 1835). 11989 US Highway 62. Fairfield. Razed.
13. *Storer–Haigh House (c. 1830). 9255 Hopkins Lane. Jackson.
14. House (c. 1875). 328 Danville Pike. Liberty. Italianate.
15. James Carlisle Farm (c. 1885). 5931 State Route 73. Liberty. Italianate.
16. *Robert Lilley House (1807). 7915 State Route 124. Liberty.
17. Francis Ervin Farm (c. 1850). 8850 State Route 124. Liberty. Greek Revival.
18. Reuben Ervin House (c. 1850). 8871 State Route 124. Liberty. Greek Revival.
19. Peter Hatcher Farm (c. 1845). 4501 Turkey Road. Marshall. Greek Revival.
20. *Ephraim Small House (c. 1825). 9570 Duff Road. Paint.
21. *Zebulon Overman Farm (c. 1860). 8062 Overman Road. Paint. Greek Revival/Italianate. Razed.
22. *James Fairley House (c. 1835). 8920 Rittenhouse Road. Paint.
23. *Richard Timberlake House (c. 1825). Hightop Road, west of US Highway 62. Penn.
24. *William Jones House (c. 1850). 10215 Jones Road. Penn. Greek Revival.
25. *David Wright Farm (c. 1825). Old US Highway 62, north of Samantha. Penn.