Saint Charles County

MissouriPopulation: 406,262
56
/100
Hold
#2,215 of 3,073 counties
#89 in Missouri (113 counties)
Analysis by RentalCalcs ResearchIndependent data + algorithm-driven scoring
Updated October 19, 2026Sources: Zillow ZHVI, Zillow ZORI, US Census ACS, Tax Foundation

Market Snapshot

$372,123
Median Home Price
59% above the median US county
$1,664/mo
Median Rent
10% above the median US county
5.37%
Annual Rent-to-Price Ratio
Top 64% nationally
-$980
Est. Monthly Cash Flow
With 20% down at 7.4% rate

Scenario comparison

Same $1,664/mo rent assumption, 20% down, 7.40% rate. What changes is the acquisition price.
ScenarioPurchase priceMonthly cash flowCap rateCash-on-cash
75% of median
value-add or distressed
$279,092-$465/mo4.7%-8.7%
Median
typical MLS deal
$372,123-$980/mo3.5%-13.7%
125% of median
newer / premium
$465,154-$1,495/mo2.8%-16.8%

Price History

Median Home Price

Median Rent

Historical data from Zillow ZHVI/ZORI

Quick Investment Calculator

20%
5%50%100%

Purchase

Purchase Price$372,123
Down Payment (20%)$74,425
Loan Amount$297,698
Interest Rate7.40%

Monthly Cash Flow

Gross Rent+$1,664
Monthly P&I-$2,061
Est. Expenses (35%)-$583
Net Cash Flow-$980/mo
3.5%
Cap Rate (all cash)
-13.7%
Cash-on-Cash Return
5.37%
Rent-to-Price Ratio
Negative leverage: At 7.40% rates, borrowing costs exceed the 3.5% cap rate. All-cash buyers may see better returns.

* Based on county median values. 35% expenses include taxes, insurance, maintenance, vacancy, and property management. Actual results vary by property.

Score Breakdown

Overall Investment Score
56/100
56
Cash Flow(30%)
51/100

Based on 5.37% rent-to-price ratio. Higher ratios indicate stronger cash flow potential.

Appreciation(25%)
72/100

Based on 2.2% YoY price growth. Moderate growth (3-8%) scores highest.

Stability(25%)
50/100

Population data not available.

Affordability(20%)
50/100

Based on price relative to estimated local incomes.

Scores are calculated using real Zillow home value and rent data, Census population data, and economic indicators. The weighted average produces the overall investment score. Markets with missing rent data use estimated values based on regional averages.

Investment Outlook

Strengths

  • +Complete rent data available

Challenges

  • -Negative cash flow at typical financing (-$980/mo)
  • -Negative leverage (cap rate 3.5% < mortgage rate 7.4%)

Economic Indicators

Population
406,262
Median Income
—
Data pending
Unemployment Rate
—
Data pending
Price-to-Income
—
Data pending

Who this market fits

Best for
  • +All-cash buyers: removing debt service flips the cap rate to actual yield
Skip if
  • −You need positive cash flow on day one at typical leverage
  • −You can't tolerate negative leverage (cap rate below mortgage rate today)

Compare to Missouri counties with similar scores

CountyVerdict
TaneyMO
59$245,474$1,3446.57%HoldView
PolkMO
59$275,796$1,1805.13%HoldView
BooneMO
58$328,757$1,4635.34%HoldView
WrightMO
58$216,951Est. pending—HoldView
StoneMO
57$325,735$1,2584.64%HoldView
CurrentSaint CharlesMO
56$372,123$1,6645.37%Hold

Section 8 in Saint Charles County: payment standards by ZIP, PHA waitlist status, and voucher counts are on VoucherMatch, the same HUD dataset with the tenant demand side attached.

The Bottom Line

HoldSaint Charles is a neutral market. Consider house hacking or targeting below-market deals.

Saint Charles County in Missouri scores 56/100, ranking #2215 of 3,073 US counties (top 72%). At 20% down and current rates, a median-priced rental loses about $980/month; the 5.37% gross rent-to-price ratio doesn't survive debt service. The thesis here is appreciation, value-add, house hacking, or all-cash.

Monthly Cash Flow
$-980/mo
Cap Rate
3.5%
Cash-on-Cash
-13.7%

Related markets

Average rent by city in Saint Charles County

Typical asking rent across each city's ZIP codes (Zillow Observed Rent Index). Open a city for rent by ZIP and bedroom count.

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