Custer County

Custer County sits at a median home price of $517,756, which is the central problem for any investor running buy-and-hold numbers here. The data provides no estimated rent, no cap rate, and no cash-on-cash return, all of which are shown as zero, and that absence is itself a signal. The cash flow score is literally 0 out of 100. With a 20% down payment of $103,551 and a 6.85% rate on the remaining balance, the debt service alone is substantial before you add operating costs. The affordability index of 26 confirms the market is severely stretched relative to incomes. Year-over-year home price growth of 0.87% offers essentially no appreciation story either, placing Custer in an uncomfortable middle ground: it is neither generating cash flow nor delivering price growth that would justify the premium.

The scores make the positioning explicit. Appreciation scores 59, which is the only category above 50, meaning the investment thesis here is speculative long-term appreciation rather than any current income. Stability comes in at 50, dead neutral. The overall score of 46 places Custer at the 15th national percentile and 43rd out of 50 South Dakota counties. An appreciation buyer hunting for a long-duration hold could consider this county, but only if they have a specific theory about why prices will accelerate beyond the current 0.87% annual growth, because the data does not yet support that theory. A cash-flow buyer has no case here, and a value-add operator faces the same math problem: buying in at over half a million dollars on a county of 8,515 people severely limits the pool of renters who can support the rent levels needed to make the numbers work.

No economic anchors or employer data were provided, so any commentary on the local employment base or rental demand drivers would be speculation. What the population figure does reveal is a small, thin market. At 8,515 residents, Custer County has limited tenant depth, and any vacancy in a small landlord portfolio represents a disproportionate income disruption. Investors used to operating in markets with diverse demand drivers should treat that thinness as a structural risk, not just a temporary condition.

On carry costs, the combined monthly tax and insurance burden is $708, based on a state-average effective property tax rate of 1.28% and an insurance rate of 0.36%, with annual figures of $6,627 and $1,864 respectively. The 1.28% rate is flagged as normal relative to South Dakota peers, so it is not an outlier, but $708 per month in tax and insurance before debt service, maintenance, or management is a real number on a property where the rent level is unknown. Worth noting, as the data itself states, that 1.28% is a state-average estimate and your actual county or township rate may differ, so verify the specific parcel before closing. South Dakota carries no state income tax, which is a modest offset, but that benefit applies to every county in the state and does not make Custer's entry price any more manageable.

The concentration and demographic risk here flows directly from the size of the market. A population of 8,515 in a county with a $517,756 median home price suggests that much of the demand is likely driven by vacation, seasonal, or second-home buyers rather than a workforce rental base. If that demand category softens, the market lacks the population density to absorb it through organic rental conversion. No vacancy or regulatory data was provided, so this remains a structural observation rather than a documented rate.

Compared to the neighboring counties in the data, Custer is the most expensive by a significant margin. Butte County has a median of $352,137, Codington County sits at $335,019 with a documented median rent of $1,000 and a rent-to-price ratio of 0.036, Stanley County comes in at $296,866, Sully at $259,224, and Campbell at $190,297. Codington is the only neighbor with rent data, and at a 3.58% gross rent-to-price ratio it already represents a thin yield, yet it still clears a number that Custer cannot currently demonstrate at all. Every listed neighbor carries an overall score within two or three points of Custer's 46, so there is no meaningful quality gap, only a price gap that runs $165,000 to $327,000 lower depending on which county you choose. An investor who wants South Dakota exposure for tax reasons or long-term appreciation positioning will find the same overall score with dramatically lower entry costs in Campbell, Sully, or Stanley. Custer makes sense only for the buyer with a specific, well-sourced thesis about why this particular market commands a premium, and who has verified the rental economics on the ground before committing capital.