Sullivan County, Pennsylvania

Founding: 1847
Parent county: Lycoming

Namesake: Uncertain—possibly John Sullivan, Continental Army general
Seat: LaPorte (1847–)

Land area: 450 square miles

Population (2020): 5,840

Population (historic): 3,694 (1850); 6,191 (1870); 12,134 (1900); 7,499 (1930)

Periods of population growth: pre-1850–1900; 1970s; 1990s

Subdivisions: Four boroughs; nine townships

Pre-1940 residences (estimated): 1,821 (28.6%)
Pre-1940 housing survival rate: 83.9%
Pre-1860 housing survival rate (1940): 13.5%

Farm housing in disrepair (1950): 13.4%

Nonfarm housing in disrepair (1950): 11.9%
Average farmhouse value (1930): $1,040
Average outbuilding value (1930): $958
Average farmhouse size (1940): 7.2 rooms
Number of farms (1920): 836
Average farm size (1920): 42.7 acres
_________________________________________________________________________________

LaPorte

Namesake: John LaPorte, Pennsylvania congressman

Founding: 1847 (platting); 1852 (post office); 1853 (incorporation)

Population (2020): 320

Population (historic): 208 (1860); 192 (1880); 465 (1900); 163 (1930)

Periods of population growth: pre-1860; 1870–1900; 1930s; 1960–1990; 2000–2020
Pre-1940 residences (estimated): 116 (55.8%)
_________________________________________________________________________________

View and filter the data. Or see a map.
_________________________________________________________________________________

Outstanding Buildings

1. Zion Lutheran Church (c. 1840). 910 Kelly Road. Cherry. Greek Revival.
2. Mathias Litzelman Farm (c. 1850). 786 Litzelman Road. Cherry. Greek Revival.
3. Clemuel Ricketts House (1855). 624 Ricketts Drive. Colley. Greek Revival.

_________________________________________________________________________________