City comparison
San Marcos, TX is about 850 miles (1,400 km) from Sandy Springs, GA in a straight line. By road, the drive is roughly 1,100 miles, or about 18 hours behind the wheel at highway speeds.
Driving distance is a rough estimate (great-circle × 1.25); driving time assumes a 60 mph blended average. Real trips run 10–20% longer with stops.
A direct flight from San Marcos, TX to Sandy Springs, GA takes about 1 h 41 min, covering roughly 850 miles in a straight line. Connecting itineraries with a layover typically add 1–3 hours.
Block-to-block estimate at ~500 mph cruise, including taxi, climb, and descent — what an airline would publish, not pure airborne time.
Sandy Springs has a population of 107,221, vs 67,143 in San Marcos — about 1.6× larger by population. By land area, San Marcos covers about 40 sq mi vs 38 sq mi for Sandy Springs.
Population from US Census ACS. Land area from the Census Gazetteer (city proper, excluding inland water).
Cost indices by category, with the US city average (100) marked.
Index: 100 = US city average. Lower is more affordable.
Side-by-side costs, salaries, and sub-category indices.
| Metric | San Marcos | Sandy Springs | Difference |
|---|---|---|---|
| Median rent | $1,251/mo | $1,670/mo | 33.5% higher in Sandy Springs |
| Median home value | $248,300 | $556,300 | 124.0% higher in Sandy Springs |
| Median household income | $47,394 | $93,303 | 96.9% higher in Sandy Springs |
| Groceries index | 94.2 | 100.3 | 6.4% higher in Sandy Springs |
| Utilities index | 83.2 | 96.1 | 15.5% higher in Sandy Springs |
| Transportation index | 96.6 | 97.0 | ≈ equal (Sandy Springs slightly higher) |
| Healthcare index | 96.1 | 96.5 | ≈ equal (Sandy Springs slightly higher) |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in San Marcos, you'd need $99,962 in Sandy Springs to maintain your standard of living.
Climate, safety, and demographics side by side.
San Marcos and Sandy Springs have nearly identical overall cost-of-living indices. Housing costs are roughly 5% higher in San Marcos than in Sandy Springs. If you earn $80,000 in San Marcos, you'd need about $79,969 in Sandy Springs to keep the same standard of living.