DuPage County, IL is cheaper than Contra Costa County, CA for modeled annual cost of living. This comparison shows the yearly cost gap, salary needed to keep similar purchasing power, and the categories driving the difference.
DuPage County, IL is cheaper than Contra Costa County, CA.
Moving to DuPage County, IL is estimated to save $10,053 per year.
AnnualSave about $10,053 per year.
MonthlySave about $838 per month.
$50,000 in Contra Costa County, CA is about $43,370 in DuPage County, IL.
No measured category is higher in DuPage County, IL. Housing saves $3,019 per year.
This estimate matches your purchasing power (equivalent salary) when moving from Contra Costa County, CA to DuPage County, IL.
* Living index is estimated as (estimated annual total cost / area median annual income) * 100. A living index above 100% means modeled costs exceed median income.
Annual costs are shown for the selected household. The difference column shows how much more or less the category costs in DuPage County, IL compared with Contra Costa County, CA.
| Category | Contra Costa County, CA | DuPage County, IL | Annual difference | Monthly impact | Direction |
|---|---|---|---|---|---|
| Housing | $23,270 | $20,251 | -$3,019(-12.97%) | -$252 | Lower in DuPage County, IL |
| Taxes | $18,115 | $15,228 | -$2,887(-15.94%) | -$241 | Lower in DuPage County, IL |
| Healthcare | $6,920 | $5,054 | -$1,866(-26.97%) | -$156 | Lower in DuPage County, IL |
| Transport | $13,780 | $12,693 | -$1,087(-7.89%) | -$91 | Lower in DuPage County, IL |
| Other Costs | $8,769 | $7,770 | -$999(-11.39%) | -$83 | Lower in DuPage County, IL |
| Food | $4,973 | $4,777 | -$196(-3.94%) | -$16 | Lower in DuPage County, IL |
| Childcare | $0 | $0 | $0(0%) | $0 | About even |
These notes use the actual annual cost differences between Contra Costa County, CA and DuPage County, IL, so the page highlights the budget tradeoffs behind the total.
Modeled annual costs equal about 51.9% of median family income in Contra Costa County, CA and 48.2% in DuPage County, IL. This matters because a cheaper county can still feel tight if typical local incomes are also lower.
Housing is $3,019 per year lower in DuPage County, IL than in Contra Costa County, CA. Housing usually behaves like a fixed monthly commitment, so this matters most for renters or buyers checking whether DuPage County, IL changes their baseline budget.
Food is $196 per year lower in DuPage County, IL than in Contra Costa County, CA. Food costs affect weekly cash flow, so even a smaller modeled gap in DuPage County, IL can show up quickly for households that cook most meals at home.
Transportation is $1,087 per year lower in DuPage County, IL than in Contra Costa County, CA. Transportation matters for commuters because driving distance, vehicle costs, and transit access can change how much of a salary is left after getting around DuPage County, IL.
Healthcare is $1,866 per year lower in DuPage County, IL than in Contra Costa County, CA. Healthcare differences are useful for planning premiums and out-of-pocket exposure, especially if DuPage County, IL changes provider networks or plan options.
Other necessities is $999 per year lower in DuPage County, IL than in Contra Costa County, CA. Other necessities cover everyday basics, so changes in DuPage County, IL help explain the non-housing costs that can quietly add up month after month.
Childcare is about the same in Contra Costa County, CA and DuPage County, IL, so this category is not a major driver of the modeled gap. Childcare is most important for households with children; in DuPage County, IL, this line can swing the result even when housing or taxes look manageable.
Taxes is $2,887 per year lower in DuPage County, IL than in Contra Costa County, CA. Taxes affect take-home pay, so the gap in DuPage County, IL matters even if the headline salary looks similar before deductions.
WatchPennies uses county-level 2026 cost estimates from a 2025-2026 cost-data snapshot. The comparison includes housing, food, transportation, healthcare, childcare, other necessities, taxes, total cost, and median family income context when available.
Read the full methodologyDuPage County, IL is cheaper than Contra Costa County, CA by about $10,053 per year.
A $50,000 salary in Contra Costa County, CA is modeled as roughly equivalent to $43,370 in DuPage County, IL for the selected household profile.
The comparison includes housing, food, transportation, healthcare, childcare, other necessities, taxes, total cost, and median family income context when available.
No. WatchPennies comparisons are directional planning estimates based on county-level public datasets, not personalized financial, tax, housing, or relocation advice.
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