Caribou County

Caribou County scores 67 overall and ranks 1st in Idaho out of 43 counties, and 208th nationally out of 1,000, landing at the 73rd percentile. That top-of-state ranking is eye-catching, but the underlying scorecard tells a more specific story: appreciation scores 87 while cash flow scores 0. With a median home price of $341,144 and 5.39% year-over-year price growth, this market is producing equity, not income. The cap rate and cash-on-cash return fields return zero in the data, which, combined with the cash flow score of 0, makes it plain that at current prices and a 6.85% rate environment, rent does not cover the carry. This is a capital appreciation play, not a yield play.

That framing determines exactly who belongs here and who doesn't. If you're underwriting for monthly cash flow, Caribou County will not pencil. The cash flow score is as low as it gets, and without a meaningful spread between rent and mortgage, you're covering a gap every month in exchange for price appreciation. The 5.39% annual price gain on a $341,144 asset translates to roughly $18,400 in equity appreciation over a year, which is the actual return this market is offering. That math interests a longer-duration, appreciation-focused buyer who can fund a negative or breakeven monthly position through other income and is willing to hold through an Idaho price cycle. A value-add operator may find more runway here than a turnkey buyer, since forcing equity through improvements sharpens the exit multiple in a market already trending upward on price, but the affordability index of 57 signals that the buyer pool is constrained, which limits your resale market and adds some risk to that strategy.

The economic context supports the rental demand side, even if it doesn't solve the cash flow math. Caribou County has a population of just 7,058, which makes it a small, concentrated market. Small population counts cut both ways: limited supply of rentals keeps occupancy potentially steady for a landlord who can locate tenants, but there is little margin for error if local employment softens. The stability score of 50 reflects that concentration risk directly. An investor should be clear-eyed that this is not a diversified metro economy, and a single employer contraction or an agricultural or industrial downturn can move the local rental market materially. No economic anchor data was provided, so there's nothing specific to add here on employer composition, but the small population number alone warrants a ground-level diligence call on what drives local employment before closing.

On carry costs, the tax and insurance picture is a genuine tailwind. Idaho's state-average effective property tax rate is 0.69%, flagged as low, and at that rate, annual property tax on the $341,144 purchase comes to $2,354. Insurance adds another $648 annually. Combined, the monthly tax-plus-insurance load is $250. For context, in high-tax states the same asset might carry $600 to $900 per month in tax and insurance alone before a mortgage payment. Here, the combined cost is $250, which meaningfully reduces your total monthly outlay even if the operating income doesn't fully cover it. The honest caveat applies: 0.69% is a state-average estimate based on Tax Foundation 2024 data, and your actual county or township rate may differ. Run the county assessor number before you finalize your underwrite, but directionally, Idaho's low property tax environment is a real structural advantage for a hold-and-wait appreciation buyer absorbing carrying costs over time.

The primary risks in Caribou County are size and concentration. A population of 7,058 means the rental market is thin. If you own multiple units, you are a meaningful percentage of the available supply, which sounds like pricing power but actually means a vacancy sits longer if the local economy softens and there's no depth of tenant demand to absorb it. Regulatory risk is not flagged in the data, so no specific landlord-tenant concerns are raised, but Idaho broadly has historically been a landlord-friendly state. Demographic risk comes back to the same number: 7,058 people is a very small base, and population growth or contraction has an outsized effect on demand at that scale compared to a market ten times larger.

Against its neighbors, Caribou County holds the best overall score at 67, ahead of Cassia County (64), Fremont County (62), Custer County (61), Nez Perce County (60), and Minidoka County (60). Minidoka is the cheapest of the group at $315,655 and may offer more cash flow optionality if rents are proportionally competitive, though its score is 7 points below Caribou's. Fremont County is the most expensive at $482,700, yet scores only 62, making it difficult to justify the price premium over Caribou on a per-point-of-score basis. Nez Perce, at $374,862 and a score of 60, has the added consideration of Lewiston as an economic center, but again, Caribou outscores it. The case for choosing Caribou over any neighbor rests on its combination of Idaho's top overall score, the lowest carry costs given Idaho's tax environment, and a 5.39% price trend that no neighbor's data contradicts. The case against is the same as the case against the county itself: at 7,058 people, you are buying into a very thin market, and thin markets require a buyer who has done the local legwork, not one relying on a score to substitute for it.