Salary needed
A $50,000 salary in Fairfax County, VA would need to be about $31,735 in Petersburg city, VA, or $18,265 less, to match the modeled cost ratio.
Fairfax County, VA vs Petersburg city, VA: Cost of Living Difference
Is it cheaper?
Petersburg city, VA is cheaper than Fairfax County, VA.
Moving to Petersburg city, VA is estimated to save $28,783 per year.
Cheaper County
Petersburg city, VASave about $28,783 per year.Salary needed
$50,000 in Fairfax County, VA is about $31,735 in Petersburg city, VA.
Biggest drivers
Healthcare increases by $189 per year. Housing saves $12,530 per year.
Housing: $12,530 lower in Petersburg city, VA
Taxes: $9,624 lower in Petersburg city, VA
Childcare: about the same in both counties
Healthcare: $189 higher in Petersburg city, VA
Food: $1,361 lower in Petersburg city, VA
Transport: $1,146 lower in Petersburg city, VA
Fairfax County, VA→Petersburg city, VA
Equivalent salary in Petersburg city, VA
$31,735
-36.53% lower
Current salary: $50,000
Household: 1 adult · 0 children
Median Income in Fairfax County, VA: $178,683
Median Income in Petersburg city, VA: $64,110
Living Index in Fairfax County, VA 44.09%
Living Index in Petersburg city, VA 78.00%
This estimate matches your purchasing power (equivalent salary) when moving from Fairfax County, VA to Petersburg city, VA.
* 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 Fairfax County, VA to Petersburg city, VA is estimated to save $28,783 per year. A $50,000 salary in Fairfax County, VA would have similar purchasing power to about $31,735 in Petersburg city, VA. The largest savings come from housing and taxes.
This is a -36.53% decrease in modeled annual costs. Housing is $12,530 per year lower (-46.43%); Taxes is $9,624 per year lower (-48.59%).
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 Fairfax County, VA and Petersburg city, VA, so the page highlights the budget tradeoffs behind the total.
Affordability vs median income
Modeled annual costs equal about 44.1% of median family income in Fairfax County, VA and 78.0% in Petersburg city, VA. This matters because a cheaper county can still feel tight if typical local incomes are also lower.
Housing
Housing is $12,530 per year lower in Petersburg city, VA than in Fairfax County, VA. Housing usually behaves like a fixed monthly commitment, so this matters most for renters or buyers checking whether Petersburg city, VA changes their baseline budget.
Food
Food is $1,361 per year lower in Petersburg city, VA than in Fairfax County, VA. Food costs affect weekly cash flow, so even a smaller annual gap in Petersburg city, VA can show up quickly for households that cook most meals at home.
Transportation
Transportation is $1,146 per year lower in Petersburg city, VA than in Fairfax County, VA. Transportation matters for commuters because driving distance, vehicle costs, and transit access can change how much of a salary is left after getting around Petersburg city, VA.
Healthcare
Healthcare is $189 per year higher in Petersburg city, VA than in Fairfax County, VA. Healthcare differences are useful for planning premiums and out-of-pocket exposure, especially if Petersburg city, VA changes provider networks or plan options.
Other necessities
Other necessities is $4,313 per year lower in Petersburg city, VA than in Fairfax County, VA. Other necessities cover everyday basics, so changes in Petersburg city, VA help explain the non-housing costs that can quietly add up month after month.
Childcare
Childcare is about the same in Fairfax County, VA and Petersburg city, VA, so this category is not a major driver of the modeled gap. Childcare is most important for households with children; in Petersburg city, VA, this line can swing the result even when housing or taxes look manageable.
Taxes
Taxes is $9,624 per year lower in Petersburg city, VA than in Fairfax County, VA. Taxes affect take-home pay, so the gap in Petersburg city, VA 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 Petersburg city, VA.
Biggest Cost
Largest annual cost increase when moving to Petersburg city, VA
Annual Increase:
$189 per year
HEALTHCARE has the largest annual increase when moving to Petersburg city, VA.
Biggest Savings
Largest annual savings when moving to Petersburg city, VA
Annual Savings:
$12,530 per year
HOUSING has the largest annual savings when moving to Petersburg city, VA.
Breakdown of price percentages per category.
Numbers are average costs per section.
| Category | Difference | |
|---|---|---|
| Housing | -46% lower | |
| Food | -26% lower | |
| Transport | -9% lower | |
| Healthcare | 4% higher | |
| Other Costs | -43% lower | |
| Childcare | 0% higher | |
| Taxes | -49% lower |
In Petersburg city, VA, modeled annual costs are $50,003 compared with $78,786 in Fairfax County, VA.
Overall, annual costs are lower in Petersburg city, VA. The category breakdown above shows where the move creates the most room in the budget.
In this case Petersburg city, VA and Fairfax County, VA are both metropolitan locations.
Use our map to visually compare multiple counties at once.
