Macon County, Illinois

Founding: 1829
Parent county: Unorganized territory

Namesake: Nathaniel Macon, North Carolina politician
Seat: Decatur (1829–)

Land area: 581 square miles

Population (2020): 103,998

Population (historic): 1,122 (1830); 3,988 (1850); 26,481 (1870); 44,003 (1900); 81,731 (1930)

Periods of population growth: pre-1830–1980

Subdivisions: Three cities; nine villages; one CDP; 17 townships

Pre-1940 residences (estimated): 9,589 (19%)
Pre-1940 housing survival rate: 43.1%
Pre-1860 housing survival rate (1940): 12.5%

Farm housing in disrepair (1950): 4.9%

Nonfarm housing in disrepair (1950): 4.2%

Average farmhouse value (1930): $2,161
Average outbuilding value (1930): $1,957

Average farmhouse size (1940): 6.1 rooms
Number of farms (1920): 2,528
Average farm size (1920): 131.8 acres
Sources of settlement: Ohio, Pennsylvania, Indiana, Kentucky, Germany, Ireland, and New York
_________________________________________________________________________________

Decatur

Namesake: Stephen Decatur, U.S. naval officer

Founding: 1829 (platting); 1831 (post office); 1839 (incorporation)

Population (2020): 70,522

Population (historic): 3,839 (1860); 9,547 (1880); 20,754 (1900); 57,510 (1930)

Periods of population growth: pre-1860–1980
Pre-1940 residences (estimated): 7,241 (20.3%)
_________________________________________________________________________________

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

Outstanding Buildings

1. Joseph Trobaugh Log House (c. 1847/1860). 1495 Brozio Lane. Decatur.
2. William Ritchie House (c. 1875). 5 Michelle Lane. Illini. Italianate.
3. William Baird House (1867). 15093 North Wood Street. Maroa. Italianate.
4. Eli Ulery Farm (c. 1865). 7206 Sefton Road. Mount Zion. Italianate.
5. Andrew Clarkson House (c. 1870). County Line Road, north of Cabin Road. Oakley. Italianate.
6. Harvey Richards Farm (c. 1875). 12267 Riley Road. South Macon. Second Empire.

_________________________________________________________________________________