Forest County, Pennsylvania

Founding: 1857 (declared in 1848)
Parent county: Jefferson

Namesake: Forests within the county
Seat: Marienville (1857–1866); Tionesta (1866–)

Land area: 427 square miles

Population (2020): 6,973

Population (historic): 898 (1860); 4,385 (1880); 11,039 (1900); 5,180 (1930)

Periods of population growth: pre-1860–1900; 1930s; 1960–1980; 1990–2010

Subdivisions: One borough; one CDP; eight townships

National Register listings: Four

Pre-1940 residences (estimated): 846 (10.3%)
Pre-1940 housing survival rate: 85.3%

Farm housing in disrepair (1950): 20.7%

Nonfarm housing in disrepair (1950): 14%
Average farmhouse value (1930): $1,167
Average outbuilding value (1930): $747
Average farmhouse size (1940): 6.3 rooms
Number of farms (1920): 416
Average farm size (1920): 43.3 acres
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Tionesta

Namesake: Unknown—perhaps a Native American word

Founding: 1805 (platting); 1830 (post office); 1856 (incorporation)

Population (2020): 475

Population (historic): 320 (1870); 815 (1900); 670 (1930)

Periods of population growth: pre-1870–1900; 1920–1940; 1950s
Pre-1940 residences (estimated): 88 (33.3%)
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Outstanding Buildings

1. *Anthony Cook House (1880). 141 River Road. Barnett. Queen Anne.