Salary needed
A $50,000 salary in Williamson County, TN would need to be about $30,625 in Jefferson County, TN, or $19,375 less, to match the modeled cost ratio.
Williamson County, TN vs Jefferson County, TN: Cost of Living Difference
Is it cheaper?
Jefferson County, TN is cheaper than Williamson County, TN.
Moving to Jefferson County, TN is estimated to save $28,548 per year.
Cheaper County
Jefferson County, TNSave about $28,548 per year.Salary needed
$50,000 in Williamson County, TN is about $30,625 in Jefferson County, TN.
Biggest drivers
Transport increases by $110 per year. Housing saves $14,756 per year.
Housing: $14,756 lower in Jefferson County, TN
Taxes: $7,424 lower in Jefferson County, TN
Childcare: about the same in both counties
Healthcare: $732 lower in Jefferson County, TN
Food: $888 lower in Jefferson County, TN
Transport: $110 higher in Jefferson County, TN
Williamson County, TN→Jefferson County, TN
Equivalent salary in Jefferson County, TN
$30,625
-38.75% lower
Current salary: $50,000
Household: 1 adult · 0 children
Median Income in Williamson County, TN: $153,397
Median Income in Jefferson County, TN: $77,799
Living Index in Williamson County, TN 48.03%
Living Index in Jefferson County, TN 58.01%
This estimate matches your purchasing power (equivalent salary) when moving from Williamson County, TN to Jefferson County, TN.
* Living index is estimated as (estimated total cost / area median income) * 100. A living index above 100% means modeled costs exceed median income.
Cost of Living Breakdown by Category
Summary
Moving from Williamson County, TN to Jefferson County, TN is estimated to save $28,548 per year. A $50,000 salary in Williamson County, TN would have similar purchasing power to about $30,625 in Jefferson County, TN. The largest savings come from housing and taxes.
This is a -38.75% decrease in modeled annual costs. Housing is $14,756 per year lower (-59.3%); Taxes is $7,424 per year lower (-51.53%).
Below we break down the annual categories behind the difference using Economic Policy Institute 2026 Family Budget data.
Why this comparison matters
These notes use the actual annual cost differences between Williamson County, TN and Jefferson County, TN, so the page highlights the budget tradeoffs behind the total.
Affordability vs median income
Modeled annual costs equal about 48.0% of median family income in Williamson County, TN and 58.0% in Jefferson County, TN. This matters because a cheaper county can still feel tight if typical local incomes are also lower.
Housing
Housing is $14,756 per year lower in Jefferson County, TN than in Williamson County, TN. Housing usually behaves like a fixed monthly commitment, so this matters most for renters or buyers checking whether Jefferson County, TN changes their baseline budget.
Food
Food is $888 per year lower in Jefferson County, TN than in Williamson County, TN. Food costs affect weekly cash flow, so even a smaller annual gap in Jefferson County, TN can show up quickly for households that cook most meals at home.
Transportation
Transportation is $110 per year higher in Jefferson County, TN than in Williamson County, TN. Transportation matters for commuters because driving distance, vehicle costs, and transit access can change how much of a salary is left after getting around Jefferson County, TN.
Healthcare
Healthcare is $732 per year lower in Jefferson County, TN than in Williamson County, TN. Healthcare differences are useful for planning premiums and out-of-pocket exposure, especially if Jefferson County, TN changes provider networks or plan options.
Other necessities
Other necessities is $4,858 per year lower in Jefferson County, TN than in Williamson County, TN. Other necessities cover everyday basics, so changes in Jefferson County, TN help explain the non-housing costs that can quietly add up month after month.
Childcare
Childcare is about the same in Williamson County, TN and Jefferson County, TN, so this category is not a major driver of the modeled gap. Childcare is most important for households with children; in Jefferson County, TN, this line can swing the result even when housing or taxes look manageable.
Taxes
Taxes is $7,424 per year lower in Jefferson County, TN than in Williamson County, TN. Taxes affect take-home pay, so the gap in Jefferson County, TN matters even if the headline salary looks similar before deductions.
What changed the most?
The following cards show the annual category differences that most affect the move to Jefferson County, TN.
Biggest Cost
Largest annual cost increase when moving to Jefferson County, TN
Annual Increase:
$110 per year
TRANSPORT has the largest annual increase when moving to Jefferson County, TN.
Biggest Savings
Largest annual savings when moving to Jefferson County, TN
Annual Savings:
$14,756 per year
HOUSING has the largest annual savings when moving to Jefferson County, TN.
Breakdown of price percentages per category.
Numbers are average costs per section.
| Category | Difference | |
|---|---|---|
| Housing | -59% lower | |
| Food | -17% lower | |
| Transport | 1% higher | |
| Healthcare | -12% lower | |
| Other Costs | -52% lower | |
| Childcare | 0% higher | |
| Taxes | -52% lower |
In Jefferson County, TN, modeled annual costs are $45,131 compared with $73,679 in Williamson County, TN.
Overall, annual costs are lower in Jefferson County, TN. The category breakdown above shows where the move creates the most room in the budget.
In this case Jefferson County, TN and Williamson County, TN are both metropolitan locations.
Use our map to visually compare multiple counties at once.
