Building permits · Jun 2026
Williamson County Building Permits
Monthly residential building permits for Williamson County, Illinois — 16 units authorized in Jun 2026, 142 over the last 12 months — latest month +33.3% vs. a year earlier.
| Structure type | Units | Share |
|---|---|---|
| Single-family (1-unit) | 8 | 50.0% |
| 2-unit structures | 2 | 12.5% |
| 3–4 unit structures | 6 | 37.5% |
| Multifamily (5+ units) | 0 | 0.0% |
| All units | 16 | 100% |
Compare this area with the rest of the country: ranked leaderboards for permit volume, permits per capita, year-over-year growth, and multifamily share.
Williamson County building permits — FAQ
How many building permits were issued in Williamson County?+
16 new residential units were authorized in Williamson County, Illinois in Jun 2026, and 142 over the trailing 12 months (U.S. Census Building Permits Survey).
What share of Williamson County permits are multifamily?+
50.0% of Williamson County's Jun 2026 permitted units were in multifamily (2+ unit) buildings.
Where does this data come from?+
Figures come from the U.S. Census Bureau's Building Permits Survey, a monthly census of permit-issuing jurisdictions. pumsdata is independent and not affiliated with the Census Bureau.