Building Departments in Illinois

1. Government Offices
2. Building Departments
3. Illinois

There are 202 Building Departments in Illinois, serving a population of 12,854,526 people in an area of 55,505 square miles. There is 1 Building Department per 63,636 people, and 1 Building Department per 274 square miles.

The state of Illinois is ranked 32nd in Building Departments per capita, and 14th in Building Departments per square mile.

Illinois Building Structure & Housing Statistics

Find Illinois Residential Housing Units, Occupied Residential Buildings Construction Year, Occupied Residential Buildings Room Characteristics, Occupied Residential Buildings Bedroom Characteristics, and Occupied Residential Building Facility Characteristics. Data Source: U.S. Census Bureau; American Community Survey, 2018 ACS 5-Year Estimates.

Illinois Residential Housing Units

	Illinois	United States
Total Housing Units	5,347,268	136,384,292
Occupied Housing Units	4,830,038 (90.3%)	119,730,128 (87.8%)

Illinois Occupied Residential Buildings

	Illinois	United States
Single-Family Detached Homes	2,912,384 (60.3%)	75,188,261 (62.8%)
Single-Family Attached Homes	288,236 (6.0%)	7,179,636 (6.0%)
2 Apartments	248,181 (5.1%)	4,153,773 (3.5%)
3 or 4 Apartments	294,340 (6.1%)	5,118,888 (4.3%)
5 to 9 Apartments	299,097 (6.2%)	5,577,084 (4.7%)
10 or More Apartments	678,355 (14.0%)	15,689,922 (13.1%)
Mobile Home or Other Type of Housing	109,445 (2.3%)	6,822,564 (5.7%)

Illinois Occupied Residential Buildings Construction Year

	Illinois	United States
2014 or Later	33,656 (0.7%)	1,851,938 (1.5%)
2010 to 2013	66,478 (1.4%)	3,196,699 (2.7%)
2000 to 2009	548,236 (11.4%)	17,155,048 (14.3%)
1980 to 1999	992,290 (20.5%)	33,022,714 (27.6%)
1960 to 1979	1,272,562 (26.3%)	31,176,353 (26.0%)
1940 to 1959	919,590 (919,590.0%)	18,573,225 (18,573,225.0%)
1939 or Earlier	997,226 (20.6%)	14,754,151 (12.3%)

Illinois Occupied Residential Buildings Room Characteristics

	Illinois	United States
1 Room	106,221 (2.2%)	2,333,713 (1.9%)
2 or 3 Rooms	3,134,650 (64.9%)	78,073,033 (65.2%)
4 or 5 Rooms	1,666,470 (34.5%)	41,748,319 (34.9%)
6 or 7 Rooms	1,471,423 (30.5%)	36,978,835 (30.9%)
8 or More Rooms	1,099,318 (22.8%)	25,544,174 (21.3%)

Illinois Occupied Residential Buildings Bedroom Characteristics

	Illinois	United States
No Bedroom	122,619 (2.5%)	2,612,624 (2.2%)
1 Bedroom	522,594 (10.8%)	12,419,557 (10.4%)
2 or 3 Bedrooms	3,134,650 (64.9%)	78,073,033 (65.2%)
4 or More Bedrooms	1,050,175 (21.7%)	26,624,914 (22.2%)

Illinois Occupied Residential Building Facility Characteristics

	Illinois	United States
With Complete Plumbing Facilities	4,816,603 (99.7%)	119,258,030 (99.6%)
With Complete Kitchen Facilities	4,794,163 (99.3%)	118,741,468 (99.2%)