Jefferson County, IL — 2026 YTD
Jefferson County, IL indexed 21 development projects YTD in 2026 (through 2026-09-03). Mount Vernon accounts for all indexed city-level activity in this county.
Data through September 3, 2026 · Updated September 4, 2026 · America/Denver · Refreshed weekly
YTD Projects
21
Cities in County
1
County activity by period
| Period | Projects |
|---|---|
| Year to date (Jan 1 – Sep 3, 2026) | 21 |
| This week (Aug 31 – Sep 3, 2026) | 0 |
Cities in Jefferson County
City-level counts for YTD 2026. Linked cities have enough distinct activity for a standalone page.
| City | YTD Projects | Top Type |
|---|---|---|
| Mount Vernon | 17 | — |
Frequently asked questions
- How many development projects were indexed in Jefferson County, IL YTD 2026?
- 21 projects with indexed meeting dates year-to-date through 2026-09-03.
- Which cities in Jefferson County had the most development activity?
- Mount Vernon (17) lead the county by project count.