Winnebago County

Winnebago County prints a gross rent-to-price ratio of 7.35% on a median home price of $211,111 and median rent of $1,293. The model cap rate comes in at 4.78%, which places this market squarely in the middle of the cash-flow/appreciation spectrum, leaning slightly toward appreciation. The 8.85% year-over-year price gain is meaningful, and the appreciation score of 83 out of 100 reflects that momentum. The cash-flow score of 73 sounds decent until you look at the actual underwriting: at a 6.85% interest rate with 20% down, the modeled monthly mortgage is $1,107, estimated expenses add another $452, and the result is negative $266 per month in cash flow and a cash-on-cash return of -6.57%. That gap between a respectable cap rate and negative cash-on-cash is almost entirely explained by financing costs at current rates, which is a dynamic that applies broadly right now but hits harder in markets where rents haven't fully caught up to prices.

The investor profile this market suits most is not the cash-flow buyer underwriting at today's rates with conventional leverage. The numbers simply don't support it at 80% LTV and 6.85%. A buyer who can bring more equity to the table, whether through a larger down payment, a seller-financed deal at a lower rate, or an all-cash purchase targeting an immediate 4.78% unleveraged yield with upside from 8.85% annual appreciation, has a more defensible thesis. The appreciation score of 83 and the national percentile ranking of 86th out of 1,000 counties suggest this is a market where equity accumulation is the real story. An affordability index of 85 and a median price of $211,111 also leave room for a value-add operator to buy below median, force appreciation through renovation, and refinance or sell into a market that has demonstrated consistent price growth.

The tax and insurance picture in Winnebago deserves its own line on your underwrite, full stop. The state-average effective property tax rate for Illinois is 2.27%, and at a $211,111 purchase price that produces $4,792 in annual property taxes, or roughly $399 per month before you add $48 per month in insurance. Combined, tax and insurance alone run $447 per month, which the model confirms. That single line item represents 35% of the gross rent collected. Illinois property taxes are genuinely high, and the Tax Foundation data used here is a state-average estimate; actual Winnebago County or township rates may differ, but there is no scenario where this number becomes irrelevant. Any investor modeling this deal needs to verify the specific parcel's assessed value and tax bill, not rely on county medians. A $10,000 assessed value correction can swing your monthly carry cost by $25 to $40, and at these margins that matters.

The stability score of 50 is the number that most warrants attention. It sits at the midpoint of the scale and suggests the market carries meaningful concentration or demographic risk relative to higher-scoring peers. Winnebago County's population of 284,591 is anchored in Rockford, Illinois, which has historically faced headwinds from manufacturing sector contraction. Without specific economic anchor data to cite here, the stability score alone is sufficient reason to underwrite conservatively on vacancy assumptions and to avoid single-employer concentration in your tenant screening thesis. A market where appreciation is running at 8.85% but stability scores 50 is one where you want to own properties that can attract a broad range of tenants rather than assets that depend on one sector of the employment base.

Looking at the neighboring counties, Winnebago's closest comparable on price is Kankakee County at $211,066 median with a slightly better rent-to-price ratio of 7.44% versus Winnebago's 7.35%, and both score 72 overall. If pure yield is the priority, Kankakee edges Winnebago on the math. Williamson County is the outlier in this peer group: a median price of $152,606, rent of $1,067, and a rent-to-price ratio of 8.39% is the highest in the comparison set, which explains why a cash-flow-first buyer might look south. Madison County at $187,237 median and a 7.02% rent-to-price ratio is the weakest cash-flow option among neighbors at similar or lower price points. McHenry County at $349,331 median and a 7.26% ratio is a different market entirely, carrying Chicago-metro price risk and a higher capital requirement. You choose Winnebago over its neighbors when you weight the appreciation score of 83 and the national percentile ranking, and you accept the Illinois property tax burden as the cost of access to a market with demonstrated price momentum at an entry point still below $215,000.