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WatchPennies estimates cost of living by US county across housing, food, transportation, healthcare, childcare, other necessities, taxes, and income context.

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Contra Costa County, CA vs Fairfield County, CT: Cost of Living Difference

Is it cheaper?

Fairfield County, CT is cheaper than Contra Costa County, CA.

Moving to Fairfield County, CT is estimated to save $6,264 per year.

Cheaper County

Fairfield County, CTSave about $6,264 per year.

Salary needed

$50,000 in Contra Costa County, CA is about $45,870 in Fairfield County, CT.

Biggest drivers

Healthcare increases by $1,643 per year. Housing saves $4,478 per year.

Housing: $4,478 lower in Fairfield County, CT

Taxes: $1,598 lower in Fairfield County, CT

Childcare: about the same in both counties

Healthcare: $1,643 higher in Fairfield County, CT

Food: $104 higher in Fairfield County, CT

Transport: $577 lower in Fairfield County, CT

Contra Costa County, CA→Fairfield County, CT

Equivalent salary in Fairfield County, CT

$45,870

-8.26% lower

Current salary: $50,000

Household: 1 adult · 0 children

Median Income in Contra Costa County, CA: $146,002

Median Income in Fairfield County, CT: $0

Living Index in Contra Costa County, CA 51.94%

Living Index in Fairfield County, CT 0.00%

This estimate matches your purchasing power (equivalent salary) when moving from Contra Costa County, CA to Fairfield County, CT.

* 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 Contra Costa County, CA to Fairfield County, CT is estimated to save $6,264 per year. A $50,000 salary in Contra Costa County, CA would have similar purchasing power to about $45,870 in Fairfield County, CT. The largest savings come from housing and taxes.

This is a 8.26% decrease in modeled annual costs. Housing is $4,478 per year lower (19.24%); Taxes is $1,598 per year lower (8.82%).

Below we break down the annual categories behind the difference using Economic Policy Institute 2026 Family Budget data.

What changed the most?

The following cards show the annual category differences that most affect the move to Fairfield County, CT.

Biggest Cost

Largest annual cost increase when moving to Fairfield County, CT

Annual Increase:

$1,643 per year

HEALTHCARE has the largest annual increase when moving to Fairfield County, CT.

Biggest Savings

Largest annual savings when moving to Fairfield County, CT

Annual Savings:

$4,478 per year

HOUSING has the largest annual savings when moving to Fairfield County, CT.

Breakdown of price percentages per category.

Numbers are average costs per section.

Category	Difference
Housing	-19.24% lower
Contra Costa County, CA Fairfield County, CT Average Cost $23270.00 $18792.00 INFO: Housing costs are based on Department of Housing and Urban Development data. The estimate uses 40th percentile rent for privately owned rental units in each area. Studio apartments are paired with one-adult households, one-bedroom apartments with two-adult households, and two-bedroom apartments with households that have children.
Food	2.09% higher
Contra Costa County, CA Fairfield County, CT Average Cost $4973.00 $5077.00 INFO: Food costs are based on the U.S. Department of Agriculture's food plans. Numbers are normalized to each area using Feeding America and Meal Gap data. This estimate assumes most food is bought at local grocery stores and prepared at home.
Transport	-4.19% lower
Contra Costa County, CA Fairfield County, CT Average Cost $13780.00 $13203.00 INFO: Transportation costs are a combination of auto ownership, auto use, and public transit. Data is collected from the Center for Neighborhood Technology (CNT).
Healthcare	23.74% higher
Contra Costa County, CA Fairfield County, CT Average Cost $6920.00 $8563.00 INFO: Healthcare expenses come from average insurance premiums and out-of-pocket costs. The estimate assumes families purchase the lowest-cost available insurance plan under the Affordable Care Act. Data comes from Kaiser Family Foundation and the U.S. Department of Health and Human Services (HHS).
Other Costs	-15.49% lower
Contra Costa County, CA Fairfield County, CT Average Cost $8769.00 $7411.00 INFO: This cost is calculated through the average spending of categories deemed necessary by the Bureau of Labor Statistics Consumer Expenditure Survey. These include apparel, personal care, household supplies, reading materials, and school supplies.
Childcare	0.00% higher
Contra Costa County, CA Fairfield County, CT Average Cost $0.00 $0.00 INFO: Childcare expenses are based on combined costs for center-based care and family-based care for 4-year-olds and school-aged children. For households with one child, the estimate assumes the child is 4 years old. For households with two children, the estimate assumes the second child is 8 years old.
Taxes	-8.82% lower
Contra Costa County, CA Fairfield County, CT Average Cost $18115.00 $16517.00 INFO: Taxes are calculated from the National Bureau of Economic Research. The number weighs in personal income tax, state income tax, federal Social Security, and Medicare taxes.

In Fairfield County, CT, modeled annual costs are $69,563 compared with $75,827 in Contra Costa County, CA.

Overall, annual costs are lower in Fairfield County, CT. The category breakdown above shows where the move creates the most room in the budget.

In this case Fairfield County, CT and Contra Costa County, CA are both metropolitan locations.

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