St. Charles County, MO Average Home Price (2026)
The average home price in St. Charles County, Missouri is about $401,000 (the 2026 median across 13 ZIP codes, at ~$197/sq ft) — 64% more expensive than the Missouri median and 39% more expensive than the typical U.S. home.
How St. Charles County compares
St. Charles County is relatively expensive for housing nationally: its typical home costs $401,000 against $245,000 for Missouri and $289,000 for the U.S. Within the county, ZIP-level values run from about $242,000 to $636,000.
| Area | Typical value | $ / sq ft |
|---|---|---|
| St. Charles County | $401,000 | $197 |
| Missouri | $245,000 | $159 |
| United States | $289,000 | $193 |
Cities in St. Charles County
Cities with their own home-value page, largest first:
St. Charles County home prices by ZIP code
The 13 most valuable ZIP codes in St. Charles County (of 13 with data):
| ZIP code | Typical value | $ / sq ft | vs county |
|---|---|---|---|
| 63341 Defiance | $636,000 | $251 | +59% |
| 63332 Augusta | $561,000 | $225 | +40% |
| 63348 Foristell | $453,000 | $234 | +13% |
| 63367 Lake Saint Louis | $443,000 | $179 | +10% |
| 63368 O Fallon | $416,000 | $195 | +4% |
| 63385 Wentzville | $403,000 | $206 | +0% |
| 63304 Saint Charles | $401,000 | $207 | +0% |
| 63365 New Melle | $374,000 | $197 | -7% |
| 63366 O Fallon | $364,000 | $194 | -9% |
| 63303 Saint Charles | $356,000 | $162 | -11% |
| 63376 Saint Peters | $328,000 | $189 | -18% |
| 63301 Saint Charles | $318,000 | $222 | -21% |
| 63373 Portage des Sioux | $242,000 | $118 | -40% |
Home value appreciation in St. Charles County
Home prices in St. Charles County have risen about 95% over the last 10 years (≈6.9% a year) and +89.0% over 20 years, according to the FHFA house price index through 2025. The most recent year came in at +4.8% — still rising. A home worth $401,000 today was worth roughly $205,536 ten years ago.
See where that trend takes a specific home with the home appreciation calculator — statewide, Missouri is +88.2% over the same 10 years. Past appreciation is a track record, not a forecast; local prices can fall.
Calculators for St. Charles County
Run the numbers for St. Charles County with the local rates already filled in — change any input to test your own situation.
Salary needed to buy a home in St. Charles County
To buy the typical $401,000 home in St. Charles County with 20% down, you need a household income of roughly $109,000 a year (about $2,550 a month for the mortgage, taxes, and insurance). With 10% down the bar rises to about $130,000, because the loan is bigger and mortgage insurance kicks in.
| Down payment | Cash down | Monthly payment | Income needed |
|---|---|---|---|
| 5% (+PMI) | $20,100 | $3,160/mo | $136,000/yr |
| 10% (+PMI) | $40,100 | $3,020/mo | $130,000/yr |
| 20% | $80,200 | $2,550/mo | $109,000/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 St. Charles County
At about $197 per square foot, here is roughly how much home different budgets get you in St. Charles County:
| Budget | Approx. size | What that looks like locally |
|---|---|---|
| $200k | 1020 sq ft | below the local median — condos, smaller or older homes |
| $250k | 1270 sq ft | below the local median — condos, smaller or older homes |
| $300k | 1520 sq ft | below the local median — condos, smaller or older homes |
| $400k | 2030 sq ft | around the typical home here |
| $500k | 2540 sq ft | around the typical home here |
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 Missouri.
Estimate a specific home in St. Charles County
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St. Charles County home prices: frequently asked
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Browse all Missouri 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.