Illinois parcel data coverage
79 of 102 counties (77.5%) have parcel boundaries on CLILU, 75 with owner names — 7,320,379 parcels in all. Updated 2026-10-17.
| County | Status | Parcels | With owner | Data as of |
|---|---|---|---|---|
| Adams | Owner names | 38,742 | 99.6% | 2026-10-16 · Current |
| Alexander | No data yet | — | — | |
| Bond | Owner names | 14,436 | 99.8% | 2026-09-02 · Aging |
| Boone | Owner names | 24,194 | 99.6% | 2026-09-02 · Aging |
| Brown | Owner names | 5,422 | 97.4% | 2026-10-16 · Current |
| Bureau | Owner names | 31,809 | 99.1% | 2026-10-16 · Current |
| Calhoun | No data yet | — | — | |
| Carroll | No data yet | — | — | |
| Cass | No data yet | — | — | |
| Champaign | Parcels, owners partial | 80,270 | 0% | — |
| Christian | Owner names | 23,968 | 100% | 2026-10-16 · Current |
| Clark | No data yet | — | — | |
| Clay | Owner names | 15,190 | 99.8% | 2026-10-16 · Current |
| Clinton | Owner names | 26,058 | 99.8% | 2026-10-16 · Current |
| Coles | Owner names | 27,949 | 98.6% | 2026-10-16 · Current |
| Cook | Parcels, owners partial | 3,751,689 | 2.9% | 2026-10-17 · Current |
| Crawford | No data yet | — | — | |
| Cumberland | Owner names | 11,641 | 99.1% | 2026-10-16 · Current |
| De Witt | Owner names | 10,760 | 97.3% | 2026-10-16 · Current |
| DeKalb | Owner names | 45,182 | 100% | 2026-10-16 · Current |
| Douglas | Owner names | 15,164 | 98.4% | 2026-10-16 · Current |
| DuPage | Owner names | 337,350 | 99.8% | 2026-10-16 · Current |
| Edgar | Owner names | 17,884 | 98.8% | 2026-10-16 · Current |
| Edwards | Owner names | 7,261 | 70.2% | 2026-10-16 · Current |
| Effingham | Owner names | 23,632 | 99.4% | 2026-10-16 · Current |
| Fayette | Owner names | 21,243 | 98.5% | 2026-10-16 · Current |
| Ford | Owner names | 11,602 | 99.3% | 2026-10-17 · Current |
| Franklin | Owner names | 30,867 | 96.7% | 2026-10-16 · Current |
| Fulton | Owner names | 27,166 | 100% | 2026-10-16 · Current |
| Gallatin | No data yet | — | — | |
| Greene | Owner names | 11,208 | 98.6% | 2026-10-16 · Current |
| Grundy | Owner names | 2,132 | 97.9% | 2026-10-16 · Current |
| Hamilton | Owner names | 10,162 | 99.6% | 2026-10-16 · Current |
| Hancock | Owner names | 21,103 | 97% | 2026-09-02 · Aging |
| Hardin | No data yet | — | — | |
| Henderson | Owner names | 8,008 | 98% | 2026-10-16 · Current |
| Henry | Owner names | 31,833 | 99.3% | 2026-10-16 · Current |
| Iroquois | Owner names | 28,085 | 98.1% | 2026-10-17 · Current |
| Jackson | Owner names | 33,847 | 98.8% | 2026-10-17 · Current |
| Jasper | Owner names | 15,715 | 100% | 2026-10-17 · Current |
| Jefferson | Owner names | 30,002 | 97.9% | 2026-10-17 · Current |
| Jersey | Owner names | 14,431 | 98.8% | 2026-10-17 · Current |
| Jo Daviess | No data yet | — | — | |
| Johnson | Owner names | 12,538 | 98.4% | 2026-10-16 · Current |
| Kane | Owner names | 188,342 | 99.1% | 2026-10-17 · Current |
| Kankakee | Owner names | 54,921 | 99.9% | 2026-10-17 · Current |
| Kendall | Owner names | 61,271 | 95.1% | 2026-10-16 · Current |
| Knox | Owner names | 32,975 | 97.6% | 2026-10-16 · Current |
| Lake | Parcels, owners partial | 278,586 | 11.1% | 2026-09-03 · Aging |
| LaSalle | Owner names | 69,483 | 97% | 2026-10-16 · Current |
| Lawrence | Owner names | 14,854 | 98.2% | 2026-09-02 · Aging |
| Lee | Owner names | 28,313 | 99.1% | 2026-10-16 · Current |
| Livingston | No data yet | — | — | |
| Logan | Owner names | 18,867 | 97.8% | 2026-10-16 · Current |
| Macon | Owner names | 56,923 | 99.4% | 2026-10-17 · Current |
| Macoupin | Owner names | 37,874 | 97.4% | 2026-10-16 · Current |
| Madison | Owner names | 136,634 | 99.7% | 2026-10-16 · Current |
| Marion | Owner names | 33,855 | 98.8% | 2026-10-16 · Current |
| Marshall | Owner names | 12,927 | 98.3% | 2026-10-16 · Current |
| Mason | No data yet | — | — | |
| Massac | Owner names | 8,887 | 98.2% | 2026-10-16 · Current |
| McDonough | Owner names | 18,241 | 99.7% | 2026-10-16 · Current |
| McHenry | Owner names | 197,980 | 99.9% | 2026-08-01 · Aging |
| McLean | Owner names | 71,425 | 95.6% | 2026-10-16 · Current |
| Menard | No data yet | — | — | |
| Mercer | Owner names | 13,690 | 94.3% | 2026-10-16 · Current |
| Monroe | Owner names | 18,928 | 99% | 2026-10-16 · Current |
| Montgomery | No data yet | — | — | |
| Morgan | Owner names | 22,159 | 99.9% | 2026-10-16 · Current |
| Moultrie | Owner names | 11,377 | 99.7% | 2026-10-16 · Current |
| Ogle | No data yet | — | — | |
| Peoria | Owner names | 90,354 | 99.7% | 2026-10-16 · Current |
| Perry | No data yet | — | — | |
| Piatt | Owner names | 4,282 | 97.5% | 2026-10-16 · Current |
| Pike | No data yet | — | — | |
| Pope | No data yet | — | — | |
| Pulaski | No data yet | — | — | |
| Putnam | Owner names | 7,411 | 98.7% | 2026-10-16 · Current |
| Randolph | Owner names | 25,931 | 97.6% | 2026-10-16 · Current |
| Richland | No data yet | — | — | |
| Rock Island | Owner names | 62,925 | 99.7% | 2026-10-16 · Current |
| Saline | No data yet | — | — | |
| Sangamon | Owner names | 104,811 | 98.5% | 2026-10-16 · Current |
| Schuyler | Owner names | 8,871 | 99.7% | 2026-10-16 · Current |
| Scott | No data yet | — | — | |
| Shelby | Owner names | 21,021 | 99% | 2026-10-16 · Current |
| St. Clair | Owner names | 148,887 | 99.9% | 2026-10-16 · Current |
| Stark | Owner names | 5,963 | 99.7% | 2026-10-16 · Current |
| Stephenson | No data yet | — | — | |
| Tazewell | Owner names | 10,929 | 99.3% | 2026-10-16 · Current |
| Union | Owner names | 12,473 | 98.2% | 2026-10-16 · Current |
| Vermilion | Owner names | 55,495 | 98.2% | 2026-10-16 · Current |
| Wabash | Owner names | 9,872 | 98.9% | 2026-10-17 · Current |
| Warren | Owner names | 13,851 | 99.6% | 2026-10-16 · Current |
| Washington | Owner names | 19,833 | 99.4% | 2026-10-16 · Current |
| Wayne | Owner names | 20,124 | 98.1% | 2026-10-16 · Current |
| White | Owner names | 19,902 | 92.4% | 2026-10-16 · Current |
| Whiteside | Owner names | 36,343 | 99.4% | 2026-10-16 · Current |
| Will | Parcels, owners partial | 280,856 | 0% | 2026-10-17 · Current |
| Williamson | No data yet | — | — | |
| Winnebago | Owner names | 127,844 | 100% | 2026-10-17 · Current |
| Woodford | Owner names | 25,346 | 99.3% | 2026-10-17 · Current |
“Current” = compared with the county or state source in the last 35 days; “Aging” = 36–180 days; “Older” = not yet compared automatically.