DeKalb County vs Fulton County
Two neighbouring counties in Georgia, compared on population, size, income and housing. They share 27 mi of border.
DeKalb County
Georgia
Fulton County
Georgia
Both outlines are drawn at true relative size. Fulton County spans about 81.4 km at its widest.
Side by side
| Measure | DeKalb County | Difference | Fulton County |
|---|---|---|---|
| Population | 774,394 | -29.5% | 1,098,791 |
| Change since 2020 | 1.3% | -1.4 pp | 2.7% |
| Land area | 267.7 sq mi | -49.2% | 526.9 sq mi |
| Population density | 2,893 per sq mi | +38.7% | 2,086 per sq mi |
| Median household income | $80,644 | -15.4% | $95,292 |
| Median home value | $357,800 | -22.0% | $458,800 |
| Median age | 36.4 | the same | 36.4 |
| Households | 287,239 | -37.9% | 462,481 |
| Housing units | 330,830 | -34.8% | 507,119 |
Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026; US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. The difference column is computed here: the first county's figure against the second, expressed as a percentage of the second. The change-since-2020 row is the exception: two growth rates differ in percentage points (pp), not percent. Retrieved 30 August 2026.
What the numbers say
- Fulton County holds about 1.4 times the population of DeKalb County: 1,098,791 against 774,394.
- Fulton County covers more ground, at 526.9 square miles against 267.7.
- DeKalb County is the more crowded of the two, at 2,893 people per square mile against 2,086.
- Median household income is higher in Fulton County, by 14,648 dollars a year.
- Since 2020, DeKalb County has grown by 1.3% and Fulton County has grown by 2.7%.
- They share 27 mi of common border, which the Census Bureau publishes in its county adjacency file and which almost no other county reference presents.
Full pages
Want a different pair? Compare any two of the 3,144 US counties.
Rebuilt from source data 30 August 2026. How these figures are produced.