Martin County

Martin County sits at a median home price of $224,849, with year-over-year appreciation running at 6.0%. The scoring model rates it 89 out of 100 on appreciation and places it in the 93rd percentile nationally out of 1,000 counties ranked, with an overall score of 75. The cash-flow score, however, registers at zero, which tells you something direct about the current spread between purchase prices and rents in this market. At a $224,849 purchase price with a 6.85% interest rate, the mortgage load alone is substantial before you layer in taxes and insurance, and the cap rate data reflects the same story: this is not a market generating meaningful day-one yield. The price-to-rent dynamics here skew toward the appreciation end of the spectrum, not the income end.

That positioning determines exactly who Martin County works for. An appreciation-oriented buy-and-hold investor, particularly one who is comfortable with modest or breakeven monthly cash flow in exchange for equity growth at 6% annually, has a reasonable case here. The affordability index of 82 suggests prices are still accessible relative to local incomes, which supports continued demand without the overheating risk that comes with markets stretched well above 100 on that index. What this county does not suit is the pure cash-flow buyer underwriting to 8% or 9% cash-on-cash returns, because the numbers do not support that outcome at current prices and rates. A value-add operator could find opportunity if forced appreciation through renovation can widen the rent-to-price gap, but the base-case entry is thin on income from day one.

The tax and insurance carry costs deserve a clear line on your underwrite. At a state-average effective property tax rate of 1.13%, Martin County sits in normal territory, neither a tailwind nor a penalty, but the combined monthly tax and insurance burden of $277 is not trivial at this price point. That figure represents the Tax Foundation's 2024 state-average estimate, and actual county or township rates can differ, so pulling the specific parcel-level rate before closing is worth the fifteen minutes it takes. The insurance component at 0.35% annually adds $787 per year, reasonable for a Minnesota county but worth confirming given the region's exposure to severe weather. At a $224,849 purchase price with a 20% down payment of approximately $44,970, those carry costs compound the monthly cash-flow pressure when rental income is already tight against a 6.85% mortgage.

Population at roughly 20,000 is the concentration risk that matters most here. A county this size has limited tenant pool depth, which means vacancy in any individual property can run longer than in a metro market, and rent corrections are harder to absorb because the competing supply of tenants is thin. There is no economic anchors data provided for this county, so drawing conclusions about employer diversity or job stability is not possible from the available inputs. What the small population does signal is that this market rewards investors who know the local rental stock well and have a realistic read on achievable rents before underwriting rather than after.

Compared to its neighbors, Martin County commands a price premium over Renville ($187,350), Pipestone ($189,757), and Swift ($188,268), while posting equal or higher overall scores than all five comparable counties. Rock County is the one neighbor with a higher median price at $260,804 but scores lower overall at 74. Wilkin County at $209,079 scores 74. Martin's 6.0% annual appreciation paired with a $224,849 entry price positions it as the highest-conviction appreciation play in this peer group, assuming you accept the cash-flow tradeoff. If your underwriting requires positive monthly income from the start, the three neighbors priced in the high-$180,000s offer lower purchase prices that may produce a more workable rent-to-mortgage ratio at the same interest rate. Choose Martin over those neighbors when your thesis is equity accumulation and you have the liquidity to carry breakeven or slightly negative cash flow through early years of a hold; choose Renville, Pipestone, or Swift when day-one yield is the constraint that cannot flex.