St. Louis is one of the deepest cash-flow markets among major US metros — 3.87% cap rate at a $265,000 median price, with the 0.53% rent-to-price ratio comfortably passing the 1% rule. The structural reality is that St. Louis has been losing population in the city proper for decades while the surrounding St. Louis County (a separate jurisdiction) has held steadier — this city/county divide is unique among major US metros and materially affects investment math.
Employment anchors include Washington University and the Barnes-Jewish hospital complex (one of the largest medical employers in the country by headcount), Anheuser-Busch InBev's North American HQ, Boeing's defense operations, Edward Jones, Centene Corporation, Express Scripts, and a meaningful aerospace / defense base. Submarkets: the Central West End, Soulard, Lafayette Square, Tower Grove, and South Grand have walkable owner-occupant character with strong tenant demand. The Hill, Maplewood, Webster Groves (just outside city limits in the county) offer mid-tier family rentals. North St. Louis City has higher cap rates on paper paired with population loss, vacant-property concentration, and operational complexity. The county sprawl (Kirkwood, Clayton, Ladue, Chesterfield) is its own pricing tier.
Missouri property tax at 1.24% is below average, and the state has a flat income tax structure that benefits high-earning landlords. St. Louis City itself has additional taxes (the 1% earnings tax affects net rent if you self-manage and live in the city). Insurance is generally affordable but tornado/hail repricing has affected premiums. The city/county tax assessment cycles differ and matter for underwriting. Population trajectory remains the structural watch-item — investing in the long-term-shrinking city of St. Louis is a fundamentally different bet than investing in the steady-state St. Louis County. The investor edge here is granular submarket and jurisdiction-level discipline.
Market data powered by Zillow Home Value Index (ZHVI) and Zillow Observed Rent Index (ZORI) · Updated Feb 2026
St. Louis's 0.5% rent-to-price ratio is well below the 1% rule. At median prices of $265,000, the $1,400/mo rent produces only $854/mo in NOI. Investors here need to target below-median properties or pursue value-add strategies to make the numbers work.
At current rates, a 20% down conventional loan ($53K at 7%) would result in approximately $-556/mo cash flow — negative at median prices. Larger down payments, seller financing, or buying 15–25% below median are strategies to turn the numbers positive.
Property taxes consume 20% of gross rent here — one of the highest ratios in our dataset. This significantly compresses margins and makes St. Louis a market where tax-conscious underwriting is essential. Every deal should be stress-tested with potential assessment increases.
All figures below are computed from St. Louis's real market medians. Use them as a baseline; override with property-specific numbers in the calculators.
At 1.24% effective rate on the $265,000 median price, the annual tax bill is $3,286 — that's near national average (+17% vs the national average of ~1.06%). Verify the actual assessed value before purchase; sale-triggered reassessments can push the bill higher than the seller's current statement.
If St. Louis continues appreciating at 2.2%/yr while rents grow at a conservative 3%/yr, cap rate holds roughly steady as price growth outpaces rent. Year-by-year projection at the median:
| Year | Est. Price | Est. Rent/Mo | Cap Rate |
|---|---|---|---|
| Today | $265K | $1,400 | 3.9% |
| Year 1 | $271K | $1,442 | 3.9% |
| Year 2 | $277K | $1,485 | 3.9% |
| Year 3 | $283K | $1,530 | 4.0% |
| Year 4 | $289K | $1,576 | 4.0% |
| Year 5 | $295K | $1,623 | 4.0% |
Same median-priced St. Louis property — different capital structures. All-cash maximizes cap rate. Leverage trades cash flow for higher cash-on-cash return when the spread between cap rate and borrowing cost is positive.
| Scenario | Cash Invested | Monthly Cash Flow | Annual CF | Cash-on-Cash |
|---|---|---|---|---|
| All cash | $265K | $854 | $10,252 | 3.9% |
| 20% down conventional @ 7% | $61K | $-556 | $-6,666 | -10.9% |
| 25% down DSCR @ 8.5% | $77K | $-674 | $-8,089 | -10.5% |
Properties don't always trade at the median. Lower-priced units typically offer higher cap rates but harder operations; higher-priced properties tend to compress cap rates while attracting better tenants. All-cash assumptions below:
| Tier | Price | Rent/Mo | NOI/Yr | Cap Rate | Monthly CF |
|---|---|---|---|---|---|
| Below median (~75% price) | $199K | $1,190 | $7,765 | 3.9% | $647 |
| At median | $265K | $1,400 | $8,624 | 3.3% | $719 |
| Above median (~125% price) | $331K | $1,610 | $9,483 | 2.9% | $790 |
Cap rate is just one piece. Real estate returns come from four sources: cash flow, appreciation, principal paydown, and tax benefits. Assuming 20% down conventional financing at 7% and a 5-year hold at St. Louis's historical appreciation rate of 2.2%:
On a $53K down payment, that's a 24.6% total ROI over 5 years (not annualized). Tax benefits from depreciation are additional and depend on your personal tax bracket.
Automated checks against the underlying data — surface only the risks that actually apply to St. Louis, not generic boilerplate:
Pre-filled with St. Louis medians. Adjust to match a specific property.
Factor in financing to see your actual return on invested capital in St. Louis.
St. Louis, MO has a population of 293,310 and has been growing at 0.1% annually — roughly in line with national trends, meaning demand is stable but not exceptional. The median home price of $265,000 paired with median rents of $1,400/mo produces an estimated cap rate of 3.87%.
Property taxes at 1.24% fall within the national average range and shouldn't present unusual challenges. The vacancy rate of 6.8% is moderate and within normal parameters for a healthy rental market.
At a price-to-income ratio of 5.5x, homes cost about 5.5 times the local median income of $47,800. This moderate ratio indicates a balanced rent-vs-buy market. Home values have appreciated at roughly 2.2% annually. Steady appreciation means total returns will be primarily cash flow-driven — the more sustainable model for long-term wealth building.
Bottom line: At current median prices, St. Louis is challenging for pure cash flow investing. Consider BRRRR strategies with below-market purchases, or look at neighboring metros with stronger price-to-rent ratios.