Illinois growth by county
18,551 new homes permitted in 2025
Census Building Permits Survey, 2025, Illinois's counties added together
- Illinois population12,719,141Census Population Estimates · July 1, 2025
- Change since 2020−76,207 (−0.6%)July 1, 2020 to July 1, 2025 · Census Population Estimates
Counties by new homes per 1,000 residents
98 counties by new homes permitted in 2025 per 1,000 residents, highest first. Since 2020: population change, July 1, 2020 to July 1, 2025.
| # | County | Per 1,000 | New homes, 2025 | Population, 2025 | Since 2020 |
|---|---|---|---|---|---|
| 1 | Kendall | 5.0 | 733 | 145,470 | +9.9% |
| 2 | Lawrence | 4.9 | 67 | 13,790 | −9.7% |
| 3 | McHenry | 4.4 | 1,393 | 317,751 | +2.5% |
| 4 | Champaign | 4.1 | 860 | 209,972 | +1.8% |
| 5 | Kane | 3.1 | 1,629 | 525,757 | +1.8% |
| 6 | Will | 2.8 | 1,993 | 712,253 | +2.2% |
| 7 | DeKalb | 2.6 | 264 | 101,835 | +1.5% |
| 8 | Logan | 2.4 | 64 | 27,182 | −2.5% |
| 9 | Piatt | 2.3 | 39 | 16,791 | +0.6% |
| 10 | Shelby | 2.2 | 46 | 20,576 | −1.6% |
| 11 | Grundy | 2.1 | 114 | 54,052 | +2.9% |
| 12 | Williamson | 2.1 | 141 | 67,225 | +0.1% |
| 13 | Lake | 2.0 | 1,468 | 719,339 | +0.8% |
| 14 | Moultrie | 2.0 | 29 | 14,371 | −0.8% |
| 15 | Jo Daviess | 1.9 | 42 | 21,594 | −2.2% |
| 16 | Monroe | 1.9 | 65 | 34,840 | −0.3% |
| 17 | St. Clair | 1.8 | 463 | 250,708 | −2.5% |
| 18 | Jersey | 1.8 | 39 | 21,160 | −1.5% |
| 19 | Christian | 1.8 | 60 | 33,443 | −1.5% |
| 20 | Ogle | 1.7 | 87 | 51,399 | −0.7% |
| 21 | Madison | 1.7 | 435 | 263,110 | −1.0% |
| 22 | Macoupin | 1.6 | 70 | 43,748 | −2.6% |
| 23 | McLean | 1.6 | 269 | 171,419 | +0.1% |
| 24 | Bond | 1.5 | 25 | 16,959 | +0.6% |
| 25 | Effingham | 1.4 | 50 | 34,519 | −0.5% |
| 26 | Livingston | 1.4 | 50 | 35,057 | −2.1% |
| 27 | Douglas | 1.4 | 28 | 19,880 | +0.5% |
| 28 | Clinton | 1.4 | 51 | 37,128 | +0.6% |
| 29 | DuPage | 1.4 | 1,265 | 934,298 | +0.3% |
| 30 | Rock Island | 1.3 | 187 | 141,869 | −1.7% |
| 31 | Boone | 1.3 | 68 | 53,568 | +0.4% |
| 32 | Mercer | 1.2 | 18 | 15,229 | −2.6% |
| 33 | Carroll | 1.2 | 18 | 15,419 | −1.7% |
| 34 | Calhoun | 1.2 | 5 | 4,300 | −2.3% |
| 35 | Sangamon | 1.2 | 224 | 194,170 | −1.0% |
| 36 | Perry | 1.1 | 23 | 20,160 | −3.5% |
| 37 | Washington | 1.1 | 15 | 13,564 | −1.2% |
| 38 | Brown | 1.1 | 7 | 6,401 | +2.7% |
| 39 | Winnebago | 1.1 | 309 | 283,674 | −0.4% |
| 40 | Kankakee | 1.1 | 113 | 105,525 | −1.7% |
| 41 | Putnam | 1.1 | 6 | 5,619 | −0.1% |
| 42 | Ford | 1.1 | 14 | 13,216 | −2.2% |
| 43 | Woodford | 1.0 | 39 | 38,111 | −0.8% |
| 44 | Lee | 1.0 | 32 | 32,914 | −3.4% |
| 45 | Cook | 1.0 | 4,969 | 5,194,625 | −1.3% |
| 46 | Menard | 0.9 | 11 | 11,863 | −3.3% |
| 47 | Tazewell | 0.9 | 118 | 130,049 | −1.0% |
| 48 | De Witt | 0.9 | 13 | 15,118 | −2.1% |
| 49 | Pike | 0.8 | 11 | 14,231 | −2.8% |
| 50 | Henderson | 0.7 | 4 | 5,984 | −5.6% |
| 51 | Jasper | 0.7 | 6 | 9,032 | −2.4% |
| 52 | Wabash | 0.6 | 7 | 10,907 | −3.6% |
| 53 | Pulaski | 0.6 | 3 | 4,820 | −6.9% |
| 54 | Union | 0.6 | 10 | 16,656 | −3.7% |
| 55 | Clark | 0.6 | 9 | 15,114 | −2.2% |
| 56 | Massac | 0.6 | 8 | 13,502 | −4.5% |
| 57 | Adams | 0.6 | 36 | 64,267 | −2.1% |
| 58 | LaSalle | 0.6 | 60 | 107,773 | −1.5% |
| 59 | Fulton | 0.5 | 18 | 32,901 | −2.0% |
| 60 | Iroquois | 0.5 | 14 | 26,150 | −3.0% |
| 61 | Richland | 0.5 | 8 | 15,219 | −3.7% |
| 62 | Franklin | 0.5 | 19 | 36,916 | −2.1% |
| 63 | Bureau | 0.5 | 16 | 32,510 | −2.1% |
| 64 | Mason | 0.5 | 6 | 12,411 | −4.9% |
| 65 | Crawford | 0.5 | 9 | 18,648 | +0.1% |
| 66 | Morgan | 0.5 | 15 | 32,515 | −2.9% |
| 67 | Whiteside | 0.4 | 23 | 54,121 | −2.6% |
| 68 | Peoria | 0.4 | 73 | 178,553 | −1.6% |
| 69 | Montgomery | 0.4 | 11 | 28,076 | −0.6% |
| 70 | Macon | 0.4 | 38 | 99,300 | −4.3% |
| 71 | Henry | 0.4 | 18 | 48,095 | −2.2% |
| 72 | Coles | 0.3 | 16 | 46,607 | −1.0% |
| 73 | Jefferson | 0.3 | 12 | 36,147 | −2.3% |
| 74 | Marion | 0.3 | 12 | 36,382 | −3.4% |
| 75 | Stephenson | 0.3 | 14 | 43,220 | −3.0% |
| 76 | Pope | 0.3 | 1 | 3,672 | −2.2% |
| 77 | Marshall | 0.3 | 3 | 11,473 | −2.0% |
| 78 | Warren | 0.2 | 4 | 16,222 | −3.7% |
| 79 | Randolph | 0.2 | 7 | 29,921 | −0.6% |
| 80 | Stark | 0.2 | 1 | 5,319 | −1.2% |
| 81 | Edgar | 0.2 | 3 | 16,323 | −2.9% |
| 82 | Greene | 0.2 | 2 | 11,313 | −5.1% |
| 83 | Cass | 0.2 | 2 | 12,463 | −4.0% |
| 84 | Clay | 0.2 | 2 | 12,793 | −3.6% |
| 85 | Fayette | 0.1 | 3 | 20,790 | −3.2% |
| 86 | Vermilion | 0.1 | 10 | 71,259 | −3.7% |
| 87 | Jackson | 0.1 | 4 | 52,501 | −1.5% |
| 88 | White | 0.1 | 1 | 13,250 | −4.0% |
| 89 | Wayne | 0.1 | 1 | 15,882 | −1.6% |
| 90 | Hancock | 0.1 | 1 | 16,803 | −4.4% |
| 91 | McDonough | 0.0 | 1 | 25,916 | −4.5% |
| 92 | Knox | 0.0 | 1 | 47,767 | −4.1% |
| 93 | Alexander | 0.0 | 0 | 4,570 | −11.6% |
| 94 | Cumberland | 0.0 | 0 | 10,208 | −2.1% |
| 95 | Hardin | 0.0 | 0 | 3,588 | −1.8% |
| 96 | Johnson | 0.0 | 0 | 13,363 | +0.3% |
| 97 | Saline | 0.0 | 0 | 22,772 | −4.1% |
| 98 | Schuyler | 0.0 | 0 | 6,657 | −3.0% |
More
About these numbersSources, dates and how these figures are built
New homes
U.S. Census Bureau, Building Permits Survey, 2019-01 to 2026-09; annual files 2019-2025, posted May 14, 2026; the monthly files through Sep 2026, posted Oct 27, 2026. New housing units authorized by building permits, reported plus imputed. A month is the figure in that month's file; a year is the annual file, which adds late and corrected reports, so twelve months need not add up to the year. Public domain.
People
U.S. Census Bureau, Population Estimates Program, Vintage 2025, July 1, 2020 to July 1, 2025, posted Mar 26, 2026. Public domain.
Data edition
Figures as of Oct 27, 2026. Area figures, not any one parcel's.