Atlanta's 100-Mile Reach Captures 77.8% of Georgia — Here's What That Looks Like

By SimpleMapLab·Published 13 May 2026·Rank #17 of 50 states·↑ All 50 states

77.8% of Georgia’s population — about 8.51 M of 10.94 M residents — lives within 100 miles of Atlanta. The other 22.3% — including Savannah — sits beyond the circle.

A 100-mile geodesic radius around the Atlanta, GA state capitol overlaid on Georgia. 77.8% of Georgia's population lives inside the dashed ring.

77.8%

of Georgia’s population within 100 miles of Atlanta

8.51 M

residents inside the radius (of 10.94 M statewide)

37 mi

from Atlanta to Georgia’s population centroid

#17

of 50 states ranked by capital-to-population centrality

Open this radius in the map → /tools/map-radius-tool · Atlanta, GA · 100 mi
The link opens the SimpleMapLab Map Radius Tool with the 100-mile circle already drawn around the Atlanta capitol. Change the radius to 50, 250, or any value to compare different framings.

Why this happened

Georgia's capital is centrally located but not perfectly placed. Atlanta's 100-mile circle captures roughly two-thirds to four-fifths of the state's residents — including Atlanta (the largest city inside, ~1.05 million). The notable exception: Savannah, sitting 224 miles from the capital. The capital itself sits 37 miles from Georgia's population centroid — a moderate but not extreme offset.

The biggest cities inside the 100-mile radius

The top 5 most-populous places (by aggregated ZIP code population) sitting inside the 100-mile circle around Atlanta. Cities are listed by total population captured by ZIP centroids in the dataset.

#	City	Population in radius
1	Atlanta	1,047,285
2	Marietta	331,369
3	Lawrenceville	276,247
4	Cumming	198,629
5	Alpharetta	196,184

The largest city outside the radius

Georgia’s most-populous city outside the 100-mile circle is Savannah, sitting 224 miles from Atlanta. The aggregated population of Savannah’s ZIP codes alone — 238,019 residents — illustrates the gap between Georgia’s political seat and its population centre.

How Georgia compares

The states ranked closest to Georgia on this metric. Click any to compare the radius breakdown directly.

#16 Hawaii

Honolulu · 77.9% pop. captured

#18 Oregon

Salem · 77.5% pop. captured

#15 Virginia

Richmond · 78.8% pop. captured

#19 Arizona

Phoenix · 74.1% pop. captured

#14 Minnesota

Saint Paul · 80.3% pop. captured

Draw it yourself

Open the 100-mile circle around Atlanta →

The Map Radius Tool lets you change the radius (try 50 mi for an urban-suburban question or 250 mi for “a day’s drive”), drag the centre to compare Atlanta’s reach with that of Atlanta, or add a second circle for a side-by-side comparison.

Methodology (brief)

We took the lat/lng of the Georgia state capitol building (33.7490°, -84.3880°) and drew a 100-mile geodesic radius. For every ZIP code in Georgia, we tested whether the ZIP centroid falls inside; if so, its population counts. We then divide by Georgia’s total population to produce the percentage. The full methodology for all 50 states is on the hub page.

Suggested citation: SimpleMapLab (2026). 100 Miles Around Atlanta: How Much of Georgia Is Inside? Part of the State Capital Radius study. Retrieved from https://www.simplemaplab.com/studies/state-capital-radius/georgia. Licensed under CC-BY 4.0.