How many people live in Gwinnett County, GA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 1 million people living in Gwinnett County, GA. That makes Gwinnett County the 50th-most populous county in the US. It is also the second-largest in Georgia, accounting for 8.9% of the state’s population.
1M
population of Gwinnett County, GA (2024)
8.9%
County share of the Georgia population (2024)
About 1 million people lived in Gwinnett County, GA in 2024.
Population estimates, 2000–2024
What are Gwinnett County, GA’s age demographics?
About 122,200 Gwinnett County, GA residents are aged 65 and older in 2024. That represents 12.2% of its population. For comparison, the age group represents 15.8% of Georgia’s population and 18% in the US overall.
Another 252,800 Gwinnett County residents, or 25.2% of the population, were children under 18. For comparison, the age group represents 22.8% of Georgia’s population and 21.6% in the US overall.
A lower share of Gwinnett County, GA's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Gwinnett County, GA’s racial and ethnic demographics?
Non-Hispanic Black or African American residents make up 29.1% of the Gwinnett County, GA population, higher than the national share of 12.6%. Gwinnett County, GA also has a larger share of people identifying as Hispanic (24.5%) than the US overall (20%).
In contrast, Gwinnett County’s non-Hispanic white population accounts for 29.1%, below the 57.5% nationwide, and the non-Hispanic American Indian and Alaska Native population makes up 0.14% of the county, compared with 0.72% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Gwinnett County, GA has a higher share of a Hispanic population than Georgia as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Gwinnett County, GA is Peachtree Corners with about 42,600 residents in 2024.
Cities and towns in Gwinnett County, GA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Peachtree Corners | 42,638 |
| 2. | Duluth | 33,157 |
| 3. | Lawrenceville | 31,877 |
| 4. | Sugar Hill | 28,598 |
| 5. | Suwanee | 23,062 |
| 6. | Snellville | 22,336 |
| 7. | Norcross | 18,902 |
| 8. | Lilburn | 16,210 |
| 9. | Buford (pt.) | 15,642 |
| 10. | Dacula | 8,018 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
