What does the Cobb County, GA vs Gwinnett County, GA comparison show?

It compares estimated living costs by category, including housing, food, transportation, healthcare, childcare, other necessities, taxes, and income context.

Can I change the salary and family type?

Yes. The comparison calculator supports salary and family type inputs so you can model costs for different households.

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Cobb County, GA vs Gwinnett County, GA: Cost of Living Difference

Name: WatchPennies cost of living dataset
Creator: WatchPennies

Is it cheaper?

Cobb County, GA is cheaper than Gwinnett County, GA.

Moving to Gwinnett County, GA is estimated to cost $2,479 more per year.

Cheaper County

Cobb County, GASpend $2,479 more per year.

Salary needed

$50,000 in Cobb County, GA is about $51,875 in Gwinnett County, GA.

Biggest drivers

Transport increases by $1,038 per year. Food saves $438 per year.

Housing: $888 higher in Gwinnett County, GA

Taxes: $852 higher in Gwinnett County, GA

Childcare: about the same in both counties

Healthcare: about the same in both counties

Food: $438 lower in Gwinnett County, GA

Transport: $1,038 higher in Gwinnett County, GA

Cobb County, GA→Gwinnett County, GA

Equivalent salary in Gwinnett County, GA

$51,875

+3.75% higher

Current salary: $50,000

Household: 1 adult · 0 children

Median Income in Cobb County, GA: $119,399

Median Income in Gwinnett County, GA: $97,369

Living Index in Cobb County, GA 55.35%

Living Index in Gwinnett County, GA 70.42%

This estimate matches your purchasing power (equivalent salary) when moving from Cobb County, GA to Gwinnett County, GA.

* 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 Cobb County, GA to Gwinnett County, GA is estimated to cost $2,479 more per year. To maintain similar purchasing power, a $50,000 salary in Cobb County, GA would need to be about $51,875 in Gwinnett County, GA. The biggest increase is transport, followed by housing.

This is a 3.75% increase in modeled annual costs. Transport is $1,038 per year higher (8.45%); Housing is $888 per year higher (4.45%).

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 Gwinnett County, GA.

Biggest Cost

Largest annual cost increase when moving to Gwinnett County, GA

Annual Increase:

$1,038 per year

TRANSPORT has the largest annual increase when moving to Gwinnett County, GA.

Biggest Savings

Largest annual savings when moving to Gwinnett County, GA

Annual Savings:

$438 per year

FOOD has the largest annual savings when moving to Gwinnett County, GA.

Breakdown of price percentages per category.

Numbers are average costs per section.

Category	Difference
Housing	4.45% higher
Cobb County, GA Gwinnett County, GA Average Cost $19960.00 $20848.00 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	-9.37% lower
Cobb County, GA Gwinnett County, GA Average Cost $4673.00 $4235.00 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	8.45% higher
Cobb County, GA Gwinnett County, GA Average Cost $12291.00 $13329.00 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	0.00% higher
Cobb County, GA Gwinnett County, GA Average Cost $6195.00 $6195.00 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	1.83% higher
Cobb County, GA Gwinnett County, GA Average Cost $7648.00 $7788.00 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
Cobb County, GA Gwinnett County, GA 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	5.56% higher
Cobb County, GA Gwinnett County, GA Average Cost $15321.00 $16173.00 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 Gwinnett County, GA, modeled annual costs are $68,567 compared with $66,088 in Cobb County, GA.

Overall, annual costs are higher in Gwinnett County, GA. The category breakdown above shows whether housing, taxes, transportation, healthcare, food, childcare, or other necessities are driving the increase.

In this case Gwinnett County, GA and Cobb County, GA are both metropolitan locations.

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