City comparison
Allen, TX is about 275 miles (450 km) from San Antonio, TX in a straight line. By road, the drive is roughly 350 miles, or about 5 h 45 min 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 Allen, TX to San Antonio, TX takes about 33 min, covering roughly 275 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.
San Antonio has a population of 1,445,662, vs 105,444 in Allen — about 13.7× larger by population. By land area, San Antonio covers about 500 sq mi vs 26 sq mi for Allen.
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 | Allen | San Antonio | Difference |
|---|---|---|---|
| Median rent | $1,747/mo | $1,189/mo | 46.9% higher in Allen |
| Median home value | $390,200 | $198,000 | 97.1% higher in Allen |
| Median household income | $121,259 | $59,593 | 103.5% higher in Allen |
| Groceries index | 102.5 | 94.2 | 8.8% higher in Allen |
| Utilities index | 91.1 | 83.3 | 9.3% higher in Allen |
| Transportation index | 99.8 | 96.6 | 3.2% higher in Allen |
| Healthcare index | 99.2 | 96.1 | 3.2% higher in Allen |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Allen, you'd need $87,273 in San Antonio to maintain your standard of living.
Climate, safety, and demographics side by side.
San Antonio, TX is about 12.7% cheaper overall than Allen, TX, based on our cost-of-living index. Housing costs are roughly 27% higher in Allen than in San Antonio. If you earn $80,000 in Allen, you'd need about $69,818 in San Antonio to keep the same standard of living.