Section 01
What does it cost to live in Gwinnett County?
The headline number is the median home sale price: about $421,000 for the three months ending May 2026, down roughly 1% year over year, per Redfin. Zillow's average home value for the county was about $409,000 in July 2026. Both are estimates from different methodologies, and both put Gwinnett below the premium north-metro tier while staying above the national median.
On everyday costs, BestPlaces puts Gwinnett's cost-of-living index at 102.2, about 2.2% above the national average. The offset is the tax side: Georgia's flat state income tax rate for 2026 is 4.99%, with a $15,000 standard deduction for single filers and $30,000 for married couples filing jointly. The full city-by-city picture, including typical median values for all seven guide cities, lives on the cost of living page.