The story of this market
The typical home in Williamson County, Illinois sells for about $166,013, or $124 per square foot.
Prices are down 19% from a year ago, which gives buyers more room to negotiate. Homes take about 73 days to sell, which is slow. Over the long run, values in this county have grown 80% since 2000. Last year 9 of 17 neighborhoods saw prices rise, so the story isn't the same street to street. The biggest natural hazard here is strong wind, which FEMA rates very high. HUD's fair market rent for a two-bedroom is $996 a month.
HUD sets the fair market rent for a 2-bedroom at $996 a month. FEMA's National Risk Index rates overall hazard risk here as Relatively High.
Price climate
Every year of price change, 2000–2025
+1.8%
2025
Each stripe is one year's median price change across the area's census tracts (FHFA repeat-sales index). Deep blue is a strong gain year, red a falling year. Best: 2022 (+9.4%). Worst: 2010 (-1.5%). Hover to read a year.
Monthly price momentum
Home values since 2015
+5.4%
IL · past 12 months
Freddie Mac House Price Index, single-family homes, monthly through 2026-08. Each line starts at 100 in January 2015, so a reading of 180 means prices are up 80% since then.
Rent benchmark
Fair market rent by size
$1,304
3-bed / month
HUD Fair Market Rents, fiscal 2027, for this county. A typical rent for a modest unit, used to set housing-voucher payments.
Neighborhood price trend
Long-run price trend, 2000–2025
+1.8%
2025 change
FHFA repeat-sales index, median of 17 census tracts in this county (2000 = 100). Bars are each year's median change.
Natural hazard exposure
The area's risk shape
87
Relatively High
FEMA National Risk Index. Each spoke is a hazard ranked nationally, where 100 is the most exposed. Expected annual loss: $52,511,377.
Mortgage activity
Home lending in this county
79.1%
2019 approval rate
| Year | Applications | Loans made | Approval | Investor share | Median home value |
|---|---|---|---|---|---|
| 2018 | 2190 | 1226 | 75.4% | 10.9% | $125,000 |
| 2019 | 2328▲ | 1334▲ | 79.1%▲ | 13.8%▲ | $135,000▲ |
CFPB Home Mortgage Disclosure Act records: every mortgage application reported by lenders for homes in this county. Approval rate is approved ÷ decided (withdrawn and incomplete files excluded). Investor share and home value are the median census tract.
Williamson County, Illinois
The Williamson County housing market is currently experiencing a correction, with median sale prices declining significantly year-over-year. While inventory levels are rising, the market remains characterized by longer days on market and a cooling demand environment compared to the previous year.
No ARED distress-ledger coverage for this county yet — the foreclosure ingest rotates the national county directory, and filings appear here once the county's posted notices are read. Key-figure check: median price corroborated by the published ten-year series (2025) (within 12.5%).
Select a city to expand its ZIP intel reports beneath · 4 cities · 10 ZIP reports
Median prices moved down 4.6% year over year.
Homes spend a median of 102 days on market with 0.0 months of supply — a balanced-paced market.
0% of listings have cut prices · homes sell at 29.88% of asking — demand is holding steady.
no recorded foreclosure-ledger notices (0.0 per 10,000 residents) · unemployment 4.8% · poverty 13.2% — a stable, low-distress profile.
Deterministic aggregate of 4 researched ZIP reports of 10 — sales_count-weighted (population fallback); per point, children lacking the value or its weight are excluded. Tax rates, sentiment and context notes are tier-native and never roll.
Williamson County, Illinois — researched county-level history with a deterministic 1 / 3 / 5-year projection
Solid: researched ten-year history · dotted: 1 / 3 / 5-year projection extended from the historical 3.5%/yr trend — a deterministic estimate, not a published forecast or guarantee.
No researched properties in this county yet — the property base layer populates as property research runs, and each property feeds its ZIP's roll-up.
researched Oct 29
researched Sep 24
researched Nov 8
researched Sep 24
researched Sep 24
researched Nov 9
researched Nov 9
researched Sep 24
researched Sep 24
researched Nov 9
| 62901 | Carbondale | $115,000 | $89 | -10.4% | 68 | 91.5% | 4.9% | 4.5 | 105 | $700 | researched Oct 29 |
| 62918 | Carterville | $245,000 | $169 | +1.6% | 27 | 100.1% | 15% | 1.6 | 89 | $963 | researched Sep 24 |
| 62922 | — | $206,551 | $113 | — | 131 | — | — | — | 18 | — | researched Nov 8 |
| 62933 | Johnston City | $165,000 | $108 | +3.2% | 42 | 97.5% | 12% | 3.1 | 38 | $725 | researched Sep 24 |
| 62948 | Herrin | $87,500 | $88 | -18.6% | 49 | 94.2% | — | — | 49 | $1,000 | researched Sep 24 |
| 62949 | — | $61,668 | $39 | — | 130 | — | 25% | — | 4 | $250 | researched Nov 9 |
| 62951 | Johnston City | $175,000 | $90 | — | 85 | 93.7% | — | — | 19 | $2,088 | researched Nov 9 |
| 62956 | Karnak | $121,265 | $78 | +4.2% | 85 | 96.5% | 12% | 6.2 | 94 | $693 | researched Sep 24 |
| 62959 | Marion | $214,950 | $165 | +1.8% | 127 | — | — | — | 215 | $925 | researched Sep 24 |
| 62974 | — | $155,000 | $96 | +0.6% | 108 | 98.5% | 50% | 1 | 2 | $933 | researched Nov 9 |
Figures are each ZIP report's own latest research — the county roll-up aggregates them sales_count-weighted (population fallback); ZIPs cycle quarterly.
The county faces moderate risks from severe wind events and increasing heat, with projections indicating a significant rise in extreme temperature days over the next 30 years.
Composed from the ARED governance burden registry — tier-native tax structure (state + county + city + special districts), never averaged. State (Illinois) — Property Tax Assessment (Fair Cash Value): Property is assessed at 33 1/3% of its fair cash value. The tax bill is calculated by multiplying the equalized assessed value (EAV) by the aggregate tax rate of the local taxing districts.
The rental market has seen significant growth, with median rents rising approximately 43.6% between 2015 and 2024, outpacing home price trends.
The local economy is characterized by a lower cost of living compared to the Illinois state average, with household income growth outpacing housing cost growth over the last decade.
Data retrieved from data.census.gov
Sellers must provide a written disclosure report to prospective buyers detailing material defects in the property as defined by 765 ILCS 77/35.
765 ILCS 77/1 et seq.
Property is assessed at 33 1/3% of its fair cash value. The tax bill is calculated by multiplying the equalized assessed value (EAV) by the aggregate tax rate of the local taxing districts. Exemptions, such as the homestead exemption, reduce the EAV before the tax rate is applied.
35 ILCS 200/9-145
Governance registry — every jurisdiction re-researches on a rolling 90-day cycle. Property reports compose these inherited burdens into a per-parcel ledger with conditional determinations. Informational only — not legal advice.