Salary needed
A $50,000 salary in San Diego County, CA would need to be about $34,325 in Knox County, TN, or $15,675 less, to match the modeled cost ratio.
San Diego County, CA vs Knox County, TN: Cost of Living Difference
Is it cheaper?
Knox County, TN is cheaper than San Diego County, CA.
Moving to Knox County, TN is estimated to save $24,314 per year.
Cheaper County
Knox County, TNSave about $24,314 per year.Salary needed
$50,000 in San Diego County, CA is about $34,325 in Knox County, TN.
Biggest drivers
Food increases by $173 per year. Taxes saves $10,199 per year.
Housing: $9,898 lower in Knox County, TN
Taxes: $10,199 lower in Knox County, TN
Childcare: about the same in both counties
Healthcare: $288 lower in Knox County, TN
Food: $173 higher in Knox County, TN
Transport: $1,083 lower in Knox County, TN
San Diego County, CA→Knox County, TN
Equivalent salary in Knox County, TN
$34,325
-31.35% lower
Current salary: $50,000
Household: 1 adult · 0 children
Median Income in San Diego County, CA: $118,115
Median Income in Knox County, TN: $94,921
Living Index in San Diego County, CA 65.66%
Living Index in Knox County, TN 56.10%
This estimate matches your purchasing power (equivalent salary) when moving from San Diego County, CA to Knox 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 San Diego County, CA to Knox County, TN is estimated to save $24,314 per year. A $50,000 salary in San Diego County, CA would have similar purchasing power to about $34,325 in Knox County, TN. The largest savings come from taxes and housing.
This is a -31.35% decrease in modeled annual costs. Taxes is $10,199 per year lower (-54.27%); Housing is $9,898 per year lower (-38.45%).
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 San Diego County, CA and Knox County, TN, so the page highlights the budget tradeoffs behind the total.
Affordability vs median income
Modeled annual costs equal about 65.7% of median family income in San Diego County, CA and 56.1% in Knox County, TN. This matters because a cheaper county can still feel tight if typical local incomes are also lower.
Housing
Housing is $9,898 per year lower in Knox County, TN than in San Diego County, CA. Housing usually behaves like a fixed monthly commitment, so this matters most for renters or buyers checking whether Knox County, TN changes their baseline budget.
Food
Food is $173 per year higher in Knox County, TN than in San Diego County, CA. Food costs affect weekly cash flow, so even a smaller annual gap in Knox County, TN can show up quickly for households that cook most meals at home.
Transportation
Transportation is $1,083 per year lower in Knox County, TN than in San Diego 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 Knox County, TN.
Healthcare
Healthcare is $288 per year lower in Knox County, TN than in San Diego County, CA. Healthcare differences are useful for planning premiums and out-of-pocket exposure, especially if Knox County, TN changes provider networks or plan options.
Other necessities
Other necessities is $3,019 per year lower in Knox County, TN than in San Diego County, CA. Other necessities cover everyday basics, so changes in Knox County, TN help explain the non-housing costs that can quietly add up month after month.
Childcare
Childcare is about the same in San Diego County, CA and Knox County, TN, so this category is not a major driver of the modeled gap. Childcare is most important for households with children; in Knox County, TN, this line can swing the result even when housing or taxes look manageable.
Taxes
Taxes is $10,199 per year lower in Knox County, TN than in San Diego County, CA. Taxes affect take-home pay, so the gap in Knox 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 Knox County, TN.
Biggest Cost
Largest annual cost increase when moving to Knox County, TN
Annual Increase:
$173 per year
FOOD has the largest annual increase when moving to Knox County, TN.
Biggest Savings
Largest annual savings when moving to Knox County, TN
Annual Savings:
$10,199 per year
TAXES has the largest annual savings when moving to Knox County, TN.
Breakdown of price percentages per category.
Numbers are average costs per section.
| Category | Difference | |
|---|---|---|
| Housing | -38% lower | |
| Food | 4% higher | |
| Transport | -8% lower | |
| Healthcare | -5% lower | |
| Other Costs | -32% lower | |
| Childcare | 0% higher | |
| Taxes | -54% lower |
In Knox County, TN, modeled annual costs are $53,246 compared with $77,560 in San Diego County, CA.
Overall, annual costs are lower in Knox County, TN. The category breakdown above shows where the move creates the most room in the budget.
In this case Knox County, TN and San Diego County, CA are both metropolitan locations.
Use our map to visually compare multiple counties at once.
