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Crunching costs, sorting signals, rendering insights.
Crunching costs, sorting signals, rendering insights.
Premium market, smart picks: while Illinois trends above the national average, the gap between the most and least expensive cities here is wider than you'd think. Rockford at index 86 is the standout — offering meaningful savings without leaving Illinois (and that gap widens if you factor in state t…
#1 Ranked: Rockford — cost index 86, rent $1,151/mo, income $53,328
1 of 5 cities keep rent under 30% of $50K gross income
Data sourced from Census Bureau, Zillow, BLS, and Tax Foundation — current as of 2026
Premium market, smart picks: while Illinois trends above the national average, the gap between the most and least expensive cities here is wider than you'd think. Rockford at index 86 is the standout — offering meaningful savings without leaving Illinois (and that gap widens if you factor in state taxes).
The numbers for Rockford are straightforward: 86 on the cost index, $1,151/month rent, $53,328 income. Not the most exciting entry in the list, but solid. That alone makes it worth considering.
Look, on a $50K salary, the key number is $1,250/month — that's 30% of gross, the standard affordability line. And more often than not, that's a reasonable number. Rockford ($1,151/mo, 28%), Joliet ($1,559/mo, 37%), Elgin ($1,736/mo, 42%) all clear that bar. After federal tax, FICA (7.65%), and state income tax, estimated take-home ranges from $37,647 to $37,647/year across these top picks.
The broader context shifts things: Across Illinois, the average cost of living index is 104 — 8 points below the national median. Known for Chicago's premium versus downstate bargains, the state offers 5 tracked cities with median rents averaging $1,779/month — which, honestly, is lower than you'd expect here — . That's $116 less than the national average of $1,895. That's a number worth sharing with anyone who says affordable cities can't have good jobs.
Bottom line: Rockford leads this ranking for clear, data-backed reasons — but the "best" city depends on your priorities. Click into any city below to see the full detail page with 12-month trend charts, profession-specific salary data, and a breakdown of all five cost categories. If you're seriously considering a move, use our salary calculator to model your specific income against these numbers (not adjusted for inflation, but still telling).
| City | State Tax | Sales Tax | Property Tax | Est. Take-Home |
|---|---|---|---|---|
1Rockford | 4.95% | 8.83% | 1.73% | $37,647 |
2Joliet | 4.95% | 8.83% | 1.73% | $37,647 |
3Elgin | 4.95% | 8.83% | 1.73% | $37,647 |
4Naperville | 4.95% | 8.83% | 1.73% | $37,647 |
5Chicago | 4.95% | 8.83% | 1.73% | $37,647 |
146,120 residents · Illinois
Here's Rockford by the numbers — and there's a lot to like (and a little to watch). Cost index: 86. Rent: $1,151/month. Income: $53,328/year. Home price: $172,610. Population: 146,120. The strongest category is Housing at 66; the most expensive is Healthcare at 89. Translate that rent to annual numbers, and residents are saving renters $8,928 per year vs. the national median. Over thirty years of homeownership, the property tax savings alone are staggering.
150,489 residents · Illinois
Dive into Joliet's numbers: cost index 97 (15 points below national average), rent $1,559/month, income $88,026, and a home price of $255,981. The city's cost profile isn't flat — Utilities is the cheapest category at 89, while Healthcare runs 100. With 150,489 residents, it balances mid-size city convenience with manageable costs.
113,310 residents · Illinois
The #3 spot goes to Elgin, and the breakdown explains why. And for many people, renters here pay $1,736/month — saving renters $1,908 per year compared to the national average. Meanwhile, Utilities is the standout at index 94, keeping costs manageable. The weak spot? Healthcare at 106. At a 24% rent-to-income ratio, there's genuine breathing room in the average household budget. Hard to argue with that.
150,245 residents · Illinois
No sugarcoating: Why Naperville ranks #4: the numbers tell a clear story. At 122 on the cost index, residents spend roughly 10% more than the typical American. Rent sits at $2,157/month — for better or worse — while the median household pulls in $150,937/year. The Utilities category is particularly strong at 112, though Housing (154) lags behind. Home prices average $594,498 — $127,128 above the national median.
2,664,452 residents · Illinois
Dive into Chicago's numbers: cost index 111 (1 points below national average), rent $2,292/month, income $75,134, and a home price of $312,457. And for many people, nothing too surprising there. The city's cost profile isn't flat — Utilities is the cheapest category at 102, while Housing runs 127. As a major city with 2,664,452 residents, amenities and job markets are robust.
We calculate what percentage of a $50K gross salary goes to median rent. Cities where rent consumes less of your paycheck rank higher. We also factor in estimated take-home pay after federal taxes, FICA (7.65%), and state income tax. All data is sourced from federal agencies and verified research institutions. Cost of living indices are normalized to 100 (national median) using Zillow rent as the primary signal, with sub-category adjustments derived from regional BLS price data. Rankings are updated monthly as new data is released.
Rockford ranks #1 in Illinois for this analysis with a cost index of 86 and median income of $53,328.
Yes. On a $50K salary in Rockford, rent would consume about 28% of your gross monthly income. Financial experts recommend keeping rent under 30%. You're well within that guideline.
Our cost of living index uses real Zillow rent data as the foundation, indexed to 100 (national median). Sub-categories (housing, food, transport, utilities, healthcare) are derived from the overall index with regional adjustments. Data is updated monthly.
Rockford (ranked #1) has a cost index of 86 and rent of $1,151/mo, while Chicago (ranked #5) has a cost index of 111 and rent of $2,292/mo — a 25-point difference in cost of living.
City data is refreshed monthly from Census Bureau population estimates, Zillow rent and home price indices, BLS salary data, and Tax Foundation tax rates. Last updated: 2026.
The median 1-bedroom rent in Rockford is $1,151/month as of 2026, based on Zillow's Observed Rent Index. This is $744 below the national median of $1,895/month.
After federal taxes, FICA (7.65%), and 4.95% state income tax, estimated take-home on $50K in Rockford is approximately $37,647/year ($3,137/month). After median rent of $1,151/month, you'd have roughly $23,835/year for all other expenses.
The median home price in Rockford is $172,610, which is 3.2× the local median income. That's within the standard 3.5× affordability rule for most local earners. The national median home price is $467,370.
Illinois has a 4.95% state income tax rate. Combined state and local sales tax averages 8.83%, and the effective property tax rate is 1.73%.
This ranking was generated using data current as of early 2026. Population and income data comes from the Census Bureau's American Community Survey (5-year estimates). Rent and home price data is from Zillow's monthly releases. Tax rates are from the Tax Foundation's 2025 edition. Rankings are refreshed monthly.