Rental numbers for St. Charles County, MO
The typical home here runs -$1,370 a month at 7.78% with 25% down. 0 of 8 ZIP codes with full Zillow data in this county are cash-flow positive; the median gross yield is 5.3%.
- Gross yield
- 5.3%
- typical home, Zillow
- Median ZIP yield
- 5.3%
- 8 ZIPs with full data
- Cash flow
- -$1,370/mo
- at 7.78%, 25% down
- Typical price
- $374,000
- Zillow ZHVI, Aug 2026
- Typical rent
- $1,660/mo
- Zillow ZORI, Aug 2026
ZIP codes in St. Charles County
13 with published figures
| 63386West Alton | $174,000 | $1,050* | 7.2% | 3.3% | -$461 | n/a |
| 63376Saint Peters | $330,000 | $1,680 | 6.1% | 2.6% | -$1,062 | +5.5% |
| 63373Portage des Sioux | $247,000 | $1,170* | 5.7% | 2.2% | -$880 | n/a |
| 63366O Fallon | $365,000 | $1,697 | 5.6% | 2.2% | -$1,286 | +5.2% |
| 63385Wentzville | $403,000 | $1,805 | 5.4% | 2.1% | -$1,463 | +6.3% |
| 63368O Fallon | $417,000 | $1,867 | 5.4% | 2.1% | -$1,502 | +3.2% |
| 63301Saint Charles | $320,000 | $1,405 | 5.3% | 2.0% | -$1,201 | +2.8% |
| 63303Saint Charles | $358,000 | $1,565 | 5.2% | 2.0% | -$1,337 | +2.6% |
| 63304Saint Charles | $406,000 | $1,721 | 5.1% | 2.0% | -$1,520 | +5.7% |
| 63367Lake Saint Louis | $443,000 | $1,781 | 4.8% | 1.7% | -$1,755 | +2.5% |
| 63348Foristell | $449,000 | $1,750* | 4.7% | 1.7% | -$1,793 | n/a |
| 63332Augusta | $574,000 | $1,550* | 3.2% | 0.7% | -$2,772 | n/a |
| 63341Defiance | $644,000 | $1,580* | 2.9% | 0.5% | -$3,219 | n/a |
* HUD Fair Market Rent, 2 bedroom, where Zillow publishes no rent index. Conservative.
Trends
Five years to August 2026
- Price, 12 months
- +2.1%
- Rent, 12 months
- +3.5%
- Rent minus price growth
- +1.4 pts
- Property tax
- 1.08%
- effective rate, ACS 2024
Show the numbers
| Month | Typical value | Rent |
|---|---|---|
| Aug 2021 | $302,923 | $1,313 |
| Aug 2022 | $341,021 | $1,457 |
| Aug 2023 | $351,345 | $1,504 |
| Aug 2024 | $360,264 | $1,568 |
| Aug 2025 | $366,008 | $1,604 |
| Aug 2026 | $373,535 | $1,660 |
HUD Fair Market Rent
FY2027, St. Louis, MO-IL HUD Metro FMR Area
| Bedrooms | Studio | 1 bed | 2 bed | 3 bed | 4 bed |
|---|---|---|---|---|---|
| Fair Market Rent | $1,064 | $1,104 | $1,349 | $1,731 | $1,997 |
The 40th percentile gross rent for a standard unit, set by HUD each October and used for Section 8 payment standards. It runs below market rent; Zillow's index is shown above where it exists.
Supply
- Permits per 1,000 households
- 13.3
- 2,140 units, last 12 months
- National percentile
- 80th
- among US counties
Tools
Test a listing in St. Charles County against today's rate.
Open the calculatorPart of the St. Louis, MO metro.
Questions
- Is St. Charles County good for rental property?
- The typical home here runs -$1,370 a month at 7.78% with 25% down. 0 of 8 ZIP codes with full Zillow data in this county are cash-flow positive; the median gross yield is 5.3%. The figures use a typical home, 7.78% with 25% down and default costs shown on each ZIP page. They describe the market, not any one property.
- What is the property tax rate in St. Charles County?
- About 1.08% of value, from Census ACS median taxes paid over median home value. On a $374,000 home that is about $4,053 a year.
- What is Fair Market Rent in St. Charles County?
- HUD's FY2027 Fair Market Rent here is $1,104 for a 1-bedroom, $1,349 for a 2-bedroom and $1,731 for a 3-bedroom. Typical cash flow at today's rate is -$1,370 a month.
Sources and method
- Zillow Home Value Index (ZHVI), mid tier, smoothed and seasonally adjusted
Zillow Research. Read: 2026-08.
Typical home value by ZIP, county, metro and state, and the price trend.
- Zillow Observed Rent Index (ZORI), all homes plus multifamily, smoothed
Zillow Research. Read: 2026-08.
Typical market rent by ZIP, county and metro, and the rent trend (tier A pages).
- HUD Small Area Fair Market Rents, FY2026
US Department of Housing and Urban Development. Read: FY2026.
Rent by bedroom count for every ZIP. The rent used on tier B pages, and a reference on all pages. It is the 40th percentile gross rent, so it runs below market.
- HUD Fair Market Rents by county, FY2027
US Department of Housing and Urban Development. Read: FY2027.
County rent by bedroom count on county pages.
- American Community Survey 5-year estimates, 2020 to 2024 (B25103 median real estate taxes paid, B25077 median home value, B11001 households)
US Census Bureau. Read: 2020 to 2024.
Effective property tax rate (median taxes paid divided by median value) by ZIP code tabulation area, county and state; households for the permits ratio.
- Freddie Mac Primary Mortgage Market Survey, 30-year fixed (FRED series MORTGAGE30US)
Freddie Mac via the Federal Reserve Bank of St. Louis. Read: 2026-09-24.
The weekly 30-year rate. The site adds a disclosed investor premium to it for the loan payment.
- Building Permits Survey, county monthly files
US Census Bureau. Read: 2025-09 to 2026-08.
New housing units permitted in the last 12 months per 1,000 households, a supply-pressure signal.
Data: Zillow Research (ZHVI, ZORI), HUD, US Census Bureau, Freddie Mac. Every formula is on the methodology page.
Estimates from public data for a typical property. Not investment, tax or legal advice. Your property, financing and costs will differ.