Marion County

Marion County's numbers tell a clear story: this is an appreciation-oriented market with cash-flow math that simply doesn't work at current financing rates. The gross rent-to-price ratio sits at 0.44%, annualizing to a 5.3% gross yield before any expenses, and the actual cap rate comes in at 2.89%. Run a standard leveraged scenario, 20% down at 6.85%, and the monthly mortgage alone is $1,444 against a median rent of $1,019. Add $357 in estimated monthly expenses and you're looking at negative $781 per month in cash flow and a cash-on-cash return of negative 14.8%. The tool scores this county 37 out of 100 for cash flow, which is the honest summary. The appreciation score of 78, supported by 2.8% year-over-year price growth, tells the other side: this is a market where equity accumulation is the value proposition, not monthly income.

That profile points directly at the appreciation buyer, the investor who can absorb negative carry in exchange for building equity in a market that trends upward in price. A 2.8% annual appreciation rate on a $275,000 asset adds roughly $7,700 per year in nominal equity, which partially offsets the cash bleed but doesn't close the gap at current rates. The affordability index of 71 and the median home price of $275,372 suggest the county isn't priced out of reach for owner-occupants, which tends to protect prices on the downside but also means the rental pool is somewhat self-limiting since residents who can qualify for a mortgage often will. A value-add operator looking to force equity through renovation might find acquisitions, but the underlying rent ceiling around $1,019 median makes it hard to underwrite a spread after rehab costs. Cash-flow-focused buyers should look elsewhere.

The economic context data is not provided for Marion County, so employer-level analysis is set aside here. What the demographic picture implies, given a population of 33,487, is a small-to-mid-sized county with limited renter pool depth. Scale is a real constraint: at this population size, finding tenants quickly matters, and a single prolonged vacancy on a negative-cash-flow property compounds losses fast.

On carry costs, the $429 per month combined tax and insurance figure is not a rounding error. At Iowa's state-average effective property tax rate of 1.53%, which the data flags as high and which deserves its own line on any underwrite, the annual property tax bill on a $275,372 purchase runs approximately $4,213. Add $936 in annual insurance and you're at $5,149 per year, or $429 monthly, before touching debt service or management. To be precise, 1.53% is a state-average estimate from Tax Foundation 2024 data, and the actual Marion County or township rate may differ, so verify at the assessor level before closing. That said, the directional signal is clear: Iowa's tax environment is a headwind for rental yield, not a tailwind, and it contributes meaningfully to why the numbers don't pencil at 6.85% financing.

The ranking data reinforces the caution flag. Marion sits at the 42nd national percentile out of 1,000 counties, and, more telling, ranks 91st out of 99 Iowa counties overall. That's near the bottom of the state. The overall score of 57 out of 100 reflects a market that scores adequately on appreciation and affordability but struggles on cash flow and stability, with stability at 50. Concentration risk is real in small counties: 33,000 residents means a thin tenant pool, and any softening in local employment has an outsized effect on vacancy without the cushion of a larger metro economy.

Compared to its neighbors, Marion's relative positioning clarifies when to choose it and when to pass. Polk County, at a nearly identical median price of $274,734, carries a rent-to-price ratio of 0.53%, a full 20% higher than Marion's 0.44%, and scores 60 overall versus Marion's 57. For an investor who wants to be in central Iowa at this price point, Polk is the more defensible underwrite: better yield, more liquidity, larger tenant pool. Dallas County has higher prices at $348,025 but a rent-to-price ratio of 0.51%, still better than Marion's, and benefits from proximity to the Des Moines metro. Bremer County, at $249,927 median, has a rent-to-price ratio of only 0.34%, worse than Marion, making it a harder cash-flow case. Appanoose and Van Buren counties have much lower median prices, in the $111,000 to $169,000 range, which could open cash-flow angles that Marion can't offer, though the data doesn't include rent figures for those two. Choose Marion over its neighbors only if you have a specific off-market acquisition well below the $275,000 median, a clear renovation thesis that lifts rents above the current ceiling, and a timeline long enough for appreciation to justify the carry. Otherwise, Polk County deserves the look first.