San Augustine County, Texas

Founding: 1837 (declared in 1836)
Parent county: Unorganized territory

Namesake: The city of San Augustine
Seat: San Augustine (1837–)

Land area: 531 square miles

Population (2020): 7,918

Population (historic): 3,648 (1850); 4,196 (1870); 6,688 (1890); 11,264 (1910); 12,471 (1930)

Periods of population growth: pre-1850–1920; 1960–1980; 1990s

Subdivisions: One city; one town

National Register listings: Nine

Pre-1940 residences (estimated): 415 (7.6%)
Pre-1940 housing survival rate: 10.9%
Pre-1860 housing survival rate (1940): 5.4%

Farm housing in disrepair (1950): 47.4%

Nonfarm housing in disrepair (1950): 15.9%

Average farmhouse value (1930): $361
Average outbuilding value (1930): $90
Average farmhouse size (1940): 4 rooms
Number of farms (1920): 1,606
Average farm size (1920): 36.6 acres
Sources of settlement: Mississippi, Alabama, Louisiana, Georgia, and Tennessee
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San Augustine

Namesake: The Presidio de San Agustín de Ahumada

Founding: 1832 (platting); 1835 (post office); 1837 (incorporation)

Population (2020): 1,920

Population (historic): 250 (1870); 744 (1890); 1,204 (1910); 1,247 (1930)

Periods of population growth: pre-1870–1890; 1900–1920; 1930–1960; 1970s; 1990s
Pre-1940 residences (estimated): 179 (15.3%)
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Outstanding Buildings

1. *Felix Robertson House (1838). South of South Clark Street. Greek Revival.
2. *Ransom Horn House (1858). 717 West Columbia Street. Greek Revival.
3. *Matthew Cartwright House (1839). 912 East Main Street. Greek Revival.
4. *William Garrett House (1861). 822 State Route 21.
5. *Philip Sublett Farm (1860). 2419 State Route 21. Greek Revival.
6. *Jonas Hail House (1854). 2427 State Route 21.