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Crunching costs, sorting signals, rendering insights.
Crunching costs, sorting signals, rendering insights.
Finding the right city for a family isn't just about cheap rent — it's about income, healthcare, schools, and room to grow. We scored 5 cities in Illinois on the metrics families care about, and Joliet comes out on top with a cost index of 97, median income of $88,026, and a healthcare index of 100.
150,489 residents · Illinois
Here's Joliet by the numbers — and there's a lot to like (and a little to watch). Cost index: 97. Rent: $1,559/month. Income: $88,026/year. Home price: $255,981. Population: 150,489. The strongest category is Utilities at 89; the most expensive is Healthcare at 100. Translate that rent to annual numbers, and residents are saving renters $4,032 per year vs. the national median. On a fixed income, this is the metric that matters most.
2,664,452 residents · Illinois
Real talk: Here's Chicago by the numbers — and there's a lot to like (and a little to watch). Cost index: 111. Rent: $2,292/month. Income: $75,134/year. Home price: $312,457. Population: 2,664,452. The strongest category is Utilities at 102; the most expensive is Housing at 127. Translate that rent to annual numbers, and residents are costing renters $4,764 more per year vs. the national median. That's the sort of advantage that turns renters into homeowners.
146,120 residents · Illinois
Rockford earns its position at #3 through a combination that's hard to replicate. The 86 cost index sits 26 points below the national baseline, and the $53,328 median income means purchasing power here is amplified by the low cost base. Homes list at $172,610 — $294,760 below the national median — a genuine ownership opportunity. On the cost side, Housing leads the way at 66, while Healthcare trails at 89.
113,310 residents · Illinois
In plain English: Why Elgin ranks #4: the numbers tell a clear story. And roughly speaking, at 103 on the cost index, residents save roughly 9% less than the typical American. Rent sits at $1,736/month while the median household pulls in $88,316/year. The Utilities category is particularly strong at 94, though Healthcare (106) lags behind. Home prices average $323,259 — $144,111 below the national median.
150,245 residents · Illinois
The #5 spot goes to Naperville, and the breakdown explains why. Renters here pay $2,157/month — costing renters $3,144 more per year compared to the national average. Meanwhile, Utilities is the standout at index 112, keeping costs manageable. The weak spot? Housing at 154. At a 17% rent-to-income ratio, there's genuine breathing room in the average household budget.
#1 Ranked: Joliet — cost index 97, rent $1,559/mo, income $88,026
Joliet: high income, low cost — a rare combo
Family-weighted scoring: income $88,026, healthcare index 100, population 150,489 — balancing career, care, and schools
Data sourced from Census Bureau, Zillow, BLS, and Tax Foundation — current as of 2026
Finding the right city for a family isn't just about cheap rent — it's about income, healthcare, schools, and room to grow. We scored 5 cities in Illinois on the metrics families care about, and Joliet comes out on top with a cost index of 97, median income of $88,026, and a healthcare index of 100.
The #1 spot goes to Joliet, and the breakdown explains why. Renters here pay $1,559/month — saving renters $4,032 per year compared to the national average. Meanwhile, Utilities is the standout at index 89, making it one of the cheapest in the country for that category. The weak spot? Healthcare at 100. At a 21% rent-to-income ratio, there's genuine breathing room in the average household budget.
If you're ready to act on this, three things to do next: 1) Click into the city pages for the top 3 and check rent trends — direction matters more than the snapshot. 2) Run your income through the salary calculator for a personalized cost comparison. 3) Compare your top two picks head-to-head on our comparison page. The data is here; the decision is yours.
Joliet earns above the national median ($88,026 vs $80,367) while keeping costs below average (index 97 vs 112). That combination is exceptionally rare — only 36 of 288 cities share it.
Rent in #1-ranked Joliet has increased from $1,496 to $1,559/mo over the past 12 months — a 4% increase. Rising costs may erode its top ranking over time.
Our persona scoring model weights cost, income, rent, healthcare, taxes, and city size based on what matters most to families. Each factor scores 10-25 points out of a 100-point composite. The guide ranks every tracked city in Illinois by this personalized metric. 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.
Joliet ranks #1 in Illinois for this analysis with a cost index of 97 and median income of $88,026.
Joliet scores highest for families due to its below-average cost of living, median rent of $1,559/mo, and above-average median income of $88,026.
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.
Joliet (ranked #1) has a cost index of 97 and rent of $1,559/mo, while Naperville (ranked #5) has a cost index of 122 and rent of $2,157/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 Joliet is $1,559/month as of 2026, based on Zillow's Observed Rent Index. This is $336 below the national median of $1,895/month.
The median home price in Joliet is $255,981, which is 2.9× 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.