Williamson County
$796.9M in FY2025 federal spending, $11,867 per capita.
Illinois · FIPS 17199
In FY2025, Williamson County in Illinois received $796.9M in federal spending - $11,867 per capita for a population of 67,153. This is 24.2% below the national average and 13.0% above the Illinois average. The leading federal agency by spending share is Department of Defense. By per-capita federal spending, it ranks #5 of 102 Illinois counties.
- Total spending
- $796.9M
- Per capita
- $11,867
- vs. national avg
- -24.2%
- Fiscal year
- FY2025
The verdict
Williamson County posts top-quartile federal per-capita spending nationally, with spending dominated by Department of Defense.
- National per-capita rank
- Top 15%
- of 3,232 US counties
- Per-capita spending
- $11,867
- Leading agency
- Department of Defense
- 64% of tracked spending
- Illinois rank
- #5 of 102
How Williamson County Compares
Per-capita federal spending: Williamson County vs. Illinois and the nation
Population: 67,153 (U.S. Census Bureau estimate) - the denominator behind the per-capita figures above.
Leading Federal Agencies in Williamson County
Top awarding agencies in Williamson County, FY2025
Among the 1,150 US counties with agency-level spending data, Department of Defense is a comparatively unusual leading agency, topping only 6.4% of agency-tracked counties nationally -- often a sign of a single large federal facility rather than broad-based spending.
These 3 agencies together account for $1.1B (100%) of Williamson County's $796.9M in total tracked federal spending.
All 3 individually-tracked agencies are shown above - Williamson County has no smaller residual awarding agencies broken out beyond this set, a compact agency footprint rather than a long tail of minor awardees.
Read the agency breakdown as a table
| Agency | Spending | Share |
|---|---|---|
| Department of Defense | $696.3M | 64% |
| Social Security Administration | $333.9M | 30.7% |
| Department of Veterans Affairs | $57.7M | 5.3% |
How Williamson County Ranks Nationally
Per-capita federal spending vs. all US counties
All 3,232 US counties, FY2025
$11,867 Top 15% higher than 85% of 3,224 US counties
Each bar is a $1K-wide band; taller bars hold more US counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source USASpending.gov FY2025 + U.S. Census Bureau population estimates
Williamson County Among Illinois's Largest Counties
Population vs. per-capita spending: Illinois's biggest counties
Read the chart as a table
| County | Population | Per capita | Total spending |
|---|---|---|---|
| Cook County | 5,275,541 | $7,311 | $38.6B |
| Dupage County | 932,877 | $9,346 | $8.7B |
| Lake County | 714,342 | $7,351 | $5.3B |
| Will County | 696,355 | $5,317 | $3.7B |
| Kane County | 516,522 | $6,628 | $3.4B |
| Mchenry County | 310,229 | $6,028 | $1.9B |
| Winnebago County | 285,350 | $9,345 | $2.7B |
| Madison County | 265,859 | $7,145 | $1.9B |
| St. Clair County | 257,400 | $10,397 | $2.7B |
| Champaign County | 205,865 | $8,614 | $1.8B |
| Sangamon County | 196,343 | $20,166 | $4.0B |
| Peoria County | 181,830 | $6,704 | $1.2B |
| Mclean County | 170,954 | $5,685 | $971.8M |
| Rock Island County | 144,672 | $24,491 | $3.5B |
| Kendall County | 131,869 | $4,573 | $603.0M |
| Williamson County (this county) | 67,153 | $11,867 | $796.9M |
Federal Spending Guides
Nearby Counties With Similar Federal Spending
Counties with per-capita federal spending closest to Williamson County's $11,867 - prioritizing Illinois peers first.
Frequently Asked Questions
How much federal spending did Williamson County, Illinois receive?
How does Williamson County's per capita spending compare to the national average?
What is the population of Williamson County, Illinois?
Read our methodology - how this data is sourced, computed, and presented.
Verify with USASpending.gov → Verify population with U.S. Census Bureau →
Every figure on PlainSpending is computed directly from USASpending.gov award-transaction data, no number is typed in by an editor. This page aggregates every federal award with a place-of-performance in this county, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.