County demographics · Illinois
Will County, Illinois demographics
Will County, Illinois (county FIPS 17197) has a median household income of $109,984 (±$1,819) and a total population of 701,462 in the American Community Survey 5-year estimates for 2020-2024.
Margins of error are at the 90% confidence level. The figures describe 2020-2024 (dollars in 2024 dollars), not the present. 45 ZIP Code Tabulation Areas overlap the county (Census 2020).
Data as of Oct 22, 2026 (Olympus publication) · Markdown version
- Values are ACS 5-year estimates for 2020-2024 (dollars in 2024 dollars), not current figures.
- ZCTA-county overlaps come from the Census 2020 relationship file and use 2020 counties, by land area; Connecticut uses its legacy counties, not the planning regions in ACS 2022+.
ACS 5-year estimates, 2020-2024
Census American Community Survey 5-year estimates for 2020-2024, with 90% margins of error as published by the Census Bureau.
| Metric | Estimate | Margin of error (90%) | ACS table |
|---|---|---|---|
| Total population | 701,462 | none (controlled estimate) | B01003 |
| Median age | 39.1 years | ±0.2 years | B01002 |
| Households | 244,273 | ±835 | B11001 |
| Median household income (inflation-adjusted to the final ACS year) | $109,984 | ±$1,819 | B19013 |
| Median value of owner-occupied housing units | $319,600 | ±$3,152 | B25077 |
| Median gross rent | $1,462 | ±$33 | B25064 |
| Owner-occupied share of occupied housing units | 82.8% | none (derived from several estimates) | B25003 (derived) |
| Renter-occupied share of occupied housing units | 17.2% | none (derived from several estimates) | B25003 (derived) |
| High school graduate or higher (age 25+) | 91.8% | none (derived from several estimates) | B15003 (derived) |
| Bachelor's degree or higher (age 25+) | 37.5% | none (derived from several estimates) | B15003 (derived) |
| Share of people below the poverty level | 7.3% | none (derived from several estimates) | B17001 (derived) |
| Unemployment rate (civilian labor force) | 4.9% | none (derived from several estimates) | B23025 (derived) |
- Dollar values are in 2024 inflation-adjusted dollars.
- Percentages' margins of error are in percentage points (pp).
Geography
| Measure | Value |
|---|---|
| County FIPS | 17197 |
| Land area | 835.88 sq mi |
| Water area | 13.35 sq mi |
| Population density | 839 per sq mi of land |
| Geography vintage | 2024 Gazetteer |
ZIP codes (ZCTAs) in this county
ZCTAs that overlap the county in the Census 2020 ZCTA to county relationship file, largest share of the county's land first.
| ZCTA | Share of county land | Share of ZCTA land | County is the ZCTA's primary county |
|---|---|---|---|
| 60481 | 14.4% | 97.2% | Yes |
| 60442 | 8% | 100% | Yes |
| 60468 | 7.9% | 95.3% | Yes |
| 60421 | 7.2% | 100% | Yes |
| 60401 | 6.6% | 98% | Yes |
| 60449 | 5.8% | 98.7% | Yes |
| 60417 | 4.4% | 100% | Yes |
| 60423 | 4.3% | 94.7% | Yes |
| 60441 | 3.4% | 100% | Yes |
| 60491 | 3.1% | 100% | Yes |
| 60451 | 3% | 100% | Yes |
| 60410 | 2.4% | 83.3% | Yes |
| 60446 | 2.3% | 100% | Yes |
| 60448 | 2.2% | 100% | Yes |
| 60436 | 2.2% | 100% | Yes |
| 60544 | 2.1% | 74.1% | Yes |
| 60404 | 1.9% | 100% | Yes |
| 60440 | 1.8% | 98.1% | Yes |
| 60433 | 1.6% | 100% | Yes |
| 60585 | 1.6% | 88.1% | Yes |
| 60586 | 1.5% | 73.3% | Yes |
| 60564 | 1.4% | 75.3% | Yes |
| 60435 | 1.3% | 100% | Yes |
| 60490 | 1.2% | 100% | Yes |
| 60431 | 1.1% | 73.7% | Yes |
| 60432 | 1% | 100% | Yes |
| 60484 | 0.9% | 100% | Yes |
| 60408 | 0.8% | 100% | Yes |
| 60950 | 0.6% | 6.4% | |
| 60403 | 0.6% | 100% | Yes |
| 60565 | 0.6% | 36.8% | |
| 60447 | 0.5% | 5.6% | |
| 60503 | 0.4% | 72.3% | Yes |
| 60487 | 0.4% | 41% | |
| 60407 | 0.3% | 20.7% | |
| 60439 | 0.3% | 8.6% | |
| 60940 | 0.2% | 2.4% | |
| 60466 | 0.2% | 27.3% | |
| 60475 | 0.2% | 31.5% | |
| 60467 | 0.1% | 6% | |
| 60517 | 0.1% | 9.5% | |
| 60416 | 0.1% | 3.5% | |
| 60477 | 0.1% | 3.7% | |
| 60543 | 0% | 0.6% | |
| 60471 | 0% | 4.5% |
Sources
- American Community Survey 5-year estimates (Census Data API) — U.S. Census Bureau. ACS 5-year 2020-2024 (release acs5-2024:county), source date 2025-09-02. https://api.census.gov/data/2024/acs/acs5?get=NAME,B01003_001E,B01003_001M,B01002_001E,B01002_001M,B11001_001E,B11001_001M,B19013_001E,B19013_001M,B25077_001E,B25077_001M,B25064_001E,B25064_001M,B25003_001E,B25003_002E,B25003_003E,B15003_001E,B15003_017E,B15003_018E,B15003_019E,B15003_020E,B15003_021E,B15003_022E,B15003_023E,B15003_024E,B15003_025E,B17001_001E,B17001_002E,B23025_003E,B23025_005E&for=county:197&in=state:17
- Published by Olympus on Oct 22, 2026.
- Source data: U.S. Census Bureau. Works of the U.S. government are not subject to copyright in the United States.
- This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
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curl -s "https://api.olympus.new-odyssey.com/v1/geo-demographics/counties/17197" -H "X-API-Key: $OLYMPUS_API_KEY"get_us_demographics {"county_fips":"17197"}