Will County

Will County sits at a gross rent-to-price ratio of 7.57%, which places it toward the better end of the Chicago metro suburban spectrum but still well short of the 8–9% threshold where financing typically works cleanly at today's rates. The model cap rate of 4.92% reflects that tension: there's real income relative to asset value, but not enough to overcome a 6.85% mortgage. At 20% down on a $376,285 purchase, the modeled cash-on-cash return comes in at negative 5.95%, with monthly cash flow of negative $429 after a $1,973 mortgage payment and $831 in estimated expenses. Home prices are up 2.79% year-over-year, which is moderate appreciation, not transformative. The overall score of 65 out of 100, landing at the 68th national percentile across 1,000 counties, tells you this is a serviceable market, not a top-tier one. The cash flow score of 76 and appreciation score of 78 are both meaningfully higher than the stability score of 50 and affordability index of 49, which is a signal worth paying attention to.

Given those numbers, Will County fits best as an appreciation play with a side of income, not a cash-flow-first buy. The negative monthly cash flow at standard financing means a pure cash-flow buyer is going to struggle unless they bring more equity to the table, pay cash, or find assets trading below the county median. An appreciation buyer with a 5-to-10-year horizon gets 2.79% annual price growth plus rent appreciation in a market where the median rent of $2,374 gives tenants real occupancy incentive to stay put rather than buy at $376K with a 6.85% rate. A value-add operator who can force appreciation through renovation and push rents above the $2,374 median has the best path to making the math work on a financed deal, since the cap rate of 4.92% suggests there's room to move NOI if you're buying below median or adding units.

Will County's population of 696,774 makes it one of the more populated counties in Illinois, anchoring significant rental demand by sheer scale. Its position as part of the broader Chicago metropolitan area's southwestern suburban ring creates inherent demand from commuters and households priced out of Cook or DuPage counties. The affordability index of 49 reflects that Will is not cheap, but it remains less expensive than DuPage to the north, which keeps relative inbound migration pressure on the rental stock.

The most important underwriting line item here is property taxes. At a state-average effective rate of 2.27%, flagged as very high, the annual tax burden on a $376,285 property runs approximately $8,542, or $712 per month. Combined with the estimated $1,016 in annual insurance ($85/month), the monthly tax-and-insurance load alone comes to $797. That is a number that deserves its own line on your underwrite before you ever look at mortgage payments or management fees. Illinois already has some of the highest property tax rates in the country, and Will County's local and township rates can diverge materially from the state average, so treat 2.27% as a floor for diligence purposes, not a ceiling. If the actual effective rate on a specific parcel runs closer to 2.5–3%, which is common in certain Will County townships, your carry costs shift enough to materially change projected returns. Verify the actual tax bill on any specific address before committing.

The stability score of 50 is the number that deserves scrutiny. Without breaking above median on stability, this market carries concentration risk tied to the Chicago metro economic cycle. A broad regional slowdown would affect Will County directly and without the institutional employment diversity that buffers some larger core markets. The affordability index of 49 also means that at current prices and rates, the pool of potential buyers who can absorb your exit is not deep, which matters for your hold-period assumptions.

Compared to its neighbors, Will County makes a clear case against DuPage, which carries a higher median price of $416,478 and a substantially worse rent-to-price ratio of 5.88% versus Will's 7.57%. DuPage's overall score of 66 edges Will's 65 by one point, but the income math is clearly worse. Kane County, at a median of $363,906 and rent-to-price of 6.64%, scores 68 overall but offers meaningfully less rental yield than Will's 7.57%. If you are a Chicago suburban buyer choosing between these three, Will County delivers the best gross yield of the group at similar asset quality and metro access. Adams County shows a rent-to-price of 6.74% at a $174,680 median, and Greene and Bond counties are priced under $160K, but those markets are fundamentally different investment theses tied to downstate Illinois economics rather than Chicago metro demand. Choose Will over its neighbors when your strategy is suburban Chicago exposure with the highest available gross yield in the immediate metro ring, and when you can bring enough equity or find below-median assets to neutralize the negative cash-flow problem that straight financing creates at today's rates.