Washington County, IL Average Home Price (2026)
The average home price in Washington County, Illinois is about $163,000 (the 2026 median across 9 ZIP codes, at ~$86/sq ft) — 17% more affordable than the Illinois median and 44% more affordable than the typical U.S. home.
How Washington County compares
Washington County is relatively affordable for housing nationally: its typical home costs $163,000 against $197,000 for Illinois and $289,000 for the U.S. Within the county, ZIP-level values run from about $145,000 to $195,000.
| Area | Typical value | $ / sq ft |
|---|---|---|
| Washington County | $163,000 | $86 |
| Illinois | $197,000 | $134 |
| United States | $289,000 | $193 |
Washington County home prices by ZIP code
The 9 most valuable ZIP codes in Washington County (of 9 with data):
| ZIP code | Typical value | $ / sq ft | vs county |
|---|---|---|---|
| 62268 Oakdale | $195,000 | $49 | +20% |
| 62214 Addieville | $190,000 | $25 | +17% |
| 62263 Nashville | $177,000 | $102 | +9% |
| 62271 Okawville | $175,000 | $78 | +7% |
| 62803 Hoyleton | $163,000 | $47 | +0% |
| 62848 Irvington | $163,000 | $86 | +0% |
| 62831 Du Bois | $157,000 | $215 | -4% |
| 62808 Ashley | $147,000 | $133 | -10% |
| 62877 Richview | $145,000 | $139 | -11% |
Home value appreciation in Washington County
Home prices in Washington County have risen about 56% over the last 10 years (≈4.6% a year) and +75.1% over 20 years, according to the FHFA house price index through 2025. The most recent year came in at +8.6% — still rising. A home worth $163,000 today was worth roughly $104,353 ten years ago.
See where that trend takes a specific home with the home appreciation calculator — statewide, Illinois is +64.6% over the same 10 years. Past appreciation is a track record, not a forecast; local prices can fall.
Calculators for Washington County
Run the numbers for Washington County with the local rates already filled in — change any input to test your own situation.
Salary needed to buy a home in Washington County
To buy the typical $163,000 home in Washington County with 20% down, you need a household income of roughly $44,000 a year (about $1,030 a month for the mortgage, taxes, and insurance). With 10% down the bar rises to about $53,000, because the loan is bigger and mortgage insurance kicks in.
| Down payment | Cash down | Monthly payment | Income needed |
|---|---|---|---|
| 5% (+PMI) | $8,200 | $1,290/mo | $55,000/yr |
| 10% (+PMI) | $16,300 | $1,230/mo | $53,000/yr |
| 20% | $32,600 | $1,030/mo | $44,000/yr |
Assumes a 30-year fixed mortgage at 6.5%, property tax at 1.1% and insurance at 0.45% of value per year, PMI of 0.75% on loans with less than 20% down, and the standard 28% housing-to-income rule. Your rate, taxes, and HOA will move these — run your own numbers in the mortgage calculator.
What your budget buys in Washington County
At about $86 per square foot, here is roughly how much home different budgets get you in Washington County:
| Budget | Approx. size | What that looks like locally |
|---|---|---|
| $150k | 1740 sq ft | around the typical home here |
| $200k | 2330 sq ft | around the typical home here |
| $250k | 2910 sq ft | above the median — larger homes or the pricier ZIPs |
| $300k | 3490 sq ft | above the median — larger homes or the pricier ZIPs |
Wondering where that budget goes further? The relocation calculator ranks hundreds of U.S. cities by what the same money buys — it opens filtered to Illinois.
Estimate a specific home in Washington County
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Washington County home prices: frequently asked
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Browse all Illinois cities and counties, or look up price per square foot by ZIP code nationwide.
Directional estimates from public market data (Realtor.com & Zillow research; FHFA house price index; Census ZIP-to-county relationships), not appraisals.