Marion County, Missouri

Founding: 1826 (declared in 1822)
Parent county: Ralls

Namesake: Francis Marion, Continental Army officer
Seat: Palmyra (1827–); Hannibal (1901–)

Land area: 437 square miles

Population (2020): 28,525

Population (historic): 4,837 (1830); 12,230 (1850); 23,780 (1870); 26,331 (1900); 33,493 (1930)

Periods of population growth: pre-1830–1910; 1920s; 1970s; 1990–2010

Subdivisions: Three cities; eight townships

Pre-1940 residences (estimated): 3,461 (26.7%)
Pre-1940 housing survival rate: 42.3%
Pre-1860 housing survival rate (1940): 16.3%

Farm housing in disrepair (1950): 8.4%

Nonfarm housing in disrepair (1950): 10.4%

Average farmhouse value (1930): $1,622
Average outbuilding value (1930): $1,296

Average farmhouse size (1940): 5.1 rooms
Number of farms (1920): 1,623
Average farm size (1920): 117.3 acres
Sources of settlement: Kentucky, Illinois, Germany, Virginia, Ohio, and Ireland

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Palmyra

Namesake: The ancient city of Palmyra

Founding: 1819 (platting); 1830 (post office); 1830 (incorporation)

Population (2020): 3,613

Population (historic): 1,265 (1850); 2,615 (1870); 2,515 (1890); 2,168 (1910); 1,967 (1930)

Periods of population growth: pre-1850–1870; 1880s; 1920–1980; 1990–2020
Pre-1940 residences (estimated): 328 (20.2%)
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Hannibal

Namesake: Hannibal Creek 

Founding: 1819 (platting); 1820 (post office); 1839 (incorporation)

Population (2020): 17,312

Population (historic): 2,020 (1850); 10,125 (1870); 12,857 (1890); 18,341 (1910); 22,761 (1930)

Periods of population growth: pre-1850–1890; 1900–1930; 1970s; 2000s
Pre-1940 residences (estimated): 2,676 (33.2%)

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Outstanding Buildings

1. George Todd Farm (c. 1855). 2742 US Highway 61. Fabius. Greek Revival.
2. Logan House (c. 1875). 1600 West Line Street. Liberty. Italianate.
3. William Walker House (c. 1868). 1425 South Main Street. Liberty. Italianate.
4. James Culbertson Farm (c. 1854/1908). 7178 Road 402. Liberty. Greek Revival.
5. House (1846). 3749 Road BB. Liberty.
6. Samuel Logan Farm (c. 1860). 5697 Road C. Liberty. Greek Revival.
7. Ephraim Wilson Farm (c. 1842). 4950 Road 403. Miller. Greek Revival.
8. Robert Masterson House (c. 1830). 5025 Road 403. Miller. Federal.
9. Levi Barkley House (c. 1860). 5831 Road 419. Miller. Italianate.
10. Andalusia / Samuel Hendren Farm (c. 1855). 5591 US Highway 61. Miller. Greek Revival.
11. Samuel Hendren Log House (c. 1835). 5591 US Highway 61. Miller.

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