4th most populous of 159
With 770,307 residents in 2024, DeKalb County ranks 4th by population among Georgia's 159 counties and is home to 6.9% of the state's residents.

DeKalb County has the 4th largest immigrant share in Georgia (17.3% foreign-born) and the 4th largest economy ($59.3 billion GDP).
DeKalb County is home to 770,307 people (2024 estimate) on 268 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2000, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
Pick an indicator to see its long-run evolution.
U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 770,307 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 691,893 | 2010 · U.S. Census Bureau |
| Population, 2000 | 668,271 | July 1, 2000 · Census intercensal |
| Change since 2000 | +15.3% | 2000–2024 · Census |
| International migration | +8,755 | 2024 · Census Vintage 2024 |
| Domestic migration | −11,219 | 2024 · Census Vintage 2024 |
| Birth rate | 13.0 per 1,000 | 2024 · calculated |
| Death rate | 6.8 per 1,000 | 2024 · calculated |
| Population rank in Georgia | 4th of 159 | 2024 · calculated |
| Per capita personal income | $71,376 | BEA, 2024 · official |
| Gross domestic product | $59.3 billion | BEA, current dollars, 2024 · official |
| Median household income | $80,644 | ACS 2020–2024 5-year · official |
| Poverty rate | 13.7% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 47.4% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 17.3% | ACS 2020–2024 5-year · official |
| Median home value | $357,800 | ACS 2020–2024 5-year · official |
| Median gross rent | $1,692/month | ACS 2020–2024 5-year · official |
| Median age | 36.4 years | ACS 2020–2024 5-year · official |
| Households | 287,239 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 58.8% | ACS 2020–2024 5-year · official |
Comparable indicators for DeKalb County, Georgia and the United States.
| Indicator | County | Georgia | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | +0.8% | +4.4% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 13.0 | 11.2 | 10.6 | 2024 |
| Death rate (per 1,000) | 6.8 | 8.7 | 9.1 | 2024 |
| Net migration rate (per 1,000) | -3.2 | 7.9 | 8.2 | 2024 |
| Population density (/mi²) | 2877.7 | 193.7 | 96.3 | 2024 |
| Per capita personal income | $71,376 | $63,006 | $73,204 | BEA, 2024 |
| Median household income | $80,644 | $77,353 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 13.7% | 13.4% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 47.4% | 34.9% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 17.3% | 11.2% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $357,800 | $303,300 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $1,692/month | $1,393/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 36.4 years | 37.6 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 58.8% | 65.7% | 65.2% | ACS 2020–2024 5-year |
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With 770,307 residents in 2024, DeKalb County ranks 4th by population among Georgia's 159 counties and is home to 6.9% of the state's residents.
Its population went from 668,271 in 2000 to 770,307 in 2024, a change of +15.3%, compared with +35.9% for Georgia as a whole.
In the year to July 2024 the county recorded 10,016 births and 5,200 deaths, so births outnumbered deaths by 4,816.
Annual Census estimates since 2000 put the county's highest population in 2024, at 770,307.
DeKalb County has about 2877.7 residents per square mile of land, ranking 1st of 159 counties; Georgia averages 193.7.
With a median household income of $80,644 (ACS 2020–2024 5-year), the county ranks 27th of 159 Georgia counties; the state median is $77,353.
Its economy produced $59.3 billion of GDP in 2024 (BEA), 4th largest among 159 Georgia counties.
Real GDP grew 1.4% in 2024, adjusted for inflation (BEA, chained 2017 dollars).