Illinois in 2018 home price index and building permits for one year

FHFA annual index 2017 to 2018
Permits in 2018

This year is five or more years before the newest year of the index. Search engines do not list this page. The page of Illinois lists each year.

The FHFA annual house price index for Illinois increased by 2.4% from 2017 to 2018. In the same years, the index for the United States increased by 5.7%. Building permits in the state authorized 21,510 housing units in 2018. 10,041 of the units are in buildings with one unit.

The FHFA HPI® is a broad measure of the movement of single-family house prices. The FHFA HPI® is a weighted, repeat-sales index, meaning that it measures average price changes in repeat sales or refinancings on the same properties.
Source: Federal Housing Finance Agency, FHFA House Price Index, "What does the FHFA HPI® represent?". The site copied the text on 2 Oct 2026.

FHFA about the annual indexes of small areas: We use the all-transactions data but construct indexes on a yearly basis to provide data for very small geographic areas like counties, ZIP codes, and census tracts. FHFA FAQs, question 5

FHFA's name for the file of this index: Counties (Developmental Index; Not Seasonally Adjusted). FHFA revises earlier values of its index in each period: FHFA FAQs, question 13.

Annual index through 2025, from the FHFA release of 31 Mar 2026.

Counties in 2018

Counties of Illinois in 2018, by name: change of the FHFA annual county index from 2017 to 2018, and housing units authorized in 2018
County	Index change	Units authorized	In buildings with 1 unit
Adams County	+1.3%	49	47
Bond County	−1.1%	10	10
Boone County	+4.2%	45	45
Brown County	−2.1%	1	1
Bureau County	−1.9%	20	20
Carroll County	+2.8%	17	17
Cass County	+8.1%	9	9
Champaign County	+2.2%	1,460	305
Christian County	+3.7%	25	25
Clark County	+0.2%	4	4
Clay County	+2.7%	3	3
Clinton County	+2.2%	73	73
Coles County	0.0%	13	9
Cook County	+2.5%	8,199	1,448
Crawford County	−2.5%	3	3
Cumberland County	+2.9%	0	0
De Witt County	−1.2%	19	19
DeKalb County	+3.4%	118	106
Douglas County	+1.6%	24	24
DuPage County	+2.5%	1,439	947
Edgar County	+1.3%	0	0
Edwards County	+8.3%	0	0
Effingham County	+1.1%	60	28
Fayette County	−1.7%	5	5
Ford County	+3.0%	13	7
Franklin County	+1.0%	6	6
Fulton County	−0.7%	45	45
Gallatin County	+17.3%	0	0
Greene County	−7.9%	3	3
Grundy County	+5.0%	206	87
Hamilton County	−5.4%	0	0
Hancock County	+3.3%	3	3
Henderson County	+11.7%	5	5
Henry County	+1.1%	32	32
Iroquois County	+6.3%	26	26
Jackson County	+4.8%	9	9
Jasper County	+2.5%	1	1
Jefferson County	−1.1%	6	6
Jersey County	+1.5%	27	27
Jo Daviess County	+0.6%	26	26
Johnson County	+1.4%	0	0
Kane County	+3.5%	1,891	1,073
Kankakee County	+3.7%	157	101
Kendall County	+5.1%	732	406
Knox County	+3.9%	22	16
Lake County	+1.3%	696	612
LaSalle County	+3.5%	130	94
Lawrence County	−3.0%	50	50
Lee County	+2.3%	22	22
Livingston County	−0.9%	23	19
Logan County	+0.7%	13	13
Macon County	−0.2%	37	35
Macoupin County	+1.1%	68	68
Madison County	+2.9%	634	380
Marion County	+5.2%	12	12
Marshall County	+7.7%	6	6
Mason County	−6.4%	4	4
Massac County	+3.4%	0	0
McDonough County	−5.0%	1	1
McHenry County	+4.5%	482	398
McLean County	−0.2%	201	95
Menard County	+2.1%	18	18
Mercer County	−3.6%	7	7
Monroe County	+3.9%	122	118
Montgomery County	+0.4%	12	12
Morgan County	+2.6%	28	3
Moultrie County	−1.1%	53	33
Ogle County	+2.7%	73	59
Peoria County	−1.2%	166	66
Perry County	0.0%	40	40
Piatt County	+0.3%	33	33
Pike County	−1.5%	21	19
Putnam County	+2.6%	16	16
Randolph County	−0.4%	23	23
Richland County	−2.6%	2	2
Rock Island County	+1.1%	117	86
Saline County	+1.8%	0	0
Sangamon County	+0.8%	488	175
Schuyler County	−4.0%	0	0
Scott County	+0.1%	0	0
Shelby County	+1.4%	28	28
St. Clair County	+1.3%	664	438
Stark County	+2.9%	1	1
Stephenson County	+1.3%	12	12
Tazewell County	−0.6%	100	94
Union County	+0.7%	11	11
Vermilion County	−1.7%	65	11
Wabash County	+6.2%	15	9
Warren County	+1.3%	4	4
Washington County	+1.5%	21	21
Wayne County	+17.2%	0	0
White County	+3.2%	0	0
Whiteside County	+3.7%	28	28
Will County	+4.1%	1,627	1,406
Williamson County	+1.2%	229	187
Winnebago County	+4.5%	220	164
Woodford County	−0.8%	61	61

"n/a": FHFA has no county index value for one of the two years.

Building permits by year

Housing units authorized in Illinois by year, 1995 to 2025

50,000

Units in buildings with 1 unit
Units in buildings with 2 or more units

Units for each year

Housing units authorized by building permits in Illinois, by year
Year	All units	1 unit	2 or more units
2025	18,551	10,821	7,730
2024	20,326	10,326	10,000
2023	16,863	9,554	7,309
2022	20,549	9,765	10,784
2021	19,658	10,937	8,721
2020	18,058	9,237	8,821
2019	20,524	8,745	11,779
2018	21,510	10,041	11,469
2017	24,992	10,181	14,811
2016	22,603	10,187	12,416
2015	19,571	10,076	9,495
2014	20,578	10,553	10,025
2013	15,545	9,869	5,676
2012	13,797	8,564	5,233
2011	11,809	6,834	4,975
2010	12,318	7,624	4,694
2009	10,859	7,844	3,015
2008	22,528	11,827	10,701
2007	43,020	24,511	18,509
2006	58,802	37,903	20,899
2005	66,942	47,705	19,237
2004	59,753	46,207	13,546
2003	62,211	45,379	16,832
2002	60,971	42,545	18,426
2001	54,839	39,362	15,477
2000	51,944	37,817	14,127
1999	53,974	39,228	14,746
1998	47,984	36,177	11,807
1997	46,323	32,801	13,522
1996	49,592	35,912	13,680
1995	47,467	35,392	12,075

Sources: Federal Housing Finance Agency, annual house price indexes for states and counties, release of March 31, 2026. US Census Bureau, Building Permits Survey, annual state and county files.