Livingston County, Illinois

Founding: 1837
Parent counties: LaSalle, McLean, and unorganized territory

Namesake: Edward Livingston, New York politician
Seat: Pontiac (1837–)

Land area: 1,044 square miles

Population (2020): 35,815

Population (historic): 759 (1840); 11,637 (1860); 38,450 (1880); 42,035 (1900); 39,092 (1930)

Periods of population growth: pre-1840–1900; 1920s; 1950–1980; 1990s

Subdivisions: Two cities; one town; 12 towns; 30 townships

National Register listings: 15

Pre-1940 residences (estimated): 5,362 (33.7%)
Pre-1940 housing survival rate: 54.7%
Pre-1860 housing survival rate (1940): 8.2%

Farm housing in disrepair (1950): 3.2%

Nonfarm housing in disrepair (1950): 6%

Average farmhouse value (1930): $2,295
Average outbuilding value (1930): $2,804

Average farmhouse size (1940): 7.1 rooms
Number of farms (1920): 3,726
Average farm size (1920): 165.5 acres
Sources of settlement: Germany, Ohio, Pennsylvania, New York, Ireland, England, and Indiana
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Pontiac

Namesake: Pontiac, Ottawa chief

Founding: 1837 (platting); 1837 (post office); 1856 (incorporation)

Population (2020): 11,150

Population (historic): 733 (1860); 2,242 (1880); 4,266 (1900); 8,272 (1930)

Periods of population growth: pre-1860–1930; 1940–2010
Pre-1940 residences (estimated): 1,203 (26.1%)
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Outstanding Buildings

1. *St. Bernard Catholic Church (1895). 32043 Bud Road. Sunbury. Romanesque.
2. *St. Mary Catholic Church (1908). 23996 North 2600 East. Union. Romanesque.