City comparison
San Diego, CA is about 100 miles (150 km) from South Gate, CA in a straight line. By road, the drive is roughly 125 miles, or about 2 h 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 Diego, CA to South Gate, CA takes about 12 min, covering roughly 100 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 Diego has a population of 1,383,987, vs 92,381 in South Gate — about 15.0× larger by population. By land area, San Diego covers about 325 sq mi vs 7.2 sq mi for South Gate.
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 Diego | South Gate | Difference |
|---|---|---|---|
| Median rent | $2,080/mo | $1,400/mo | 48.6% higher in San Diego |
| Median home value | $783,300 | $578,900 | 35.3% higher in San Diego |
| Median household income | $98,657 | $67,188 | 46.8% higher in San Diego |
| Groceries index | 107.6 | 106.4 | 1.1% higher in San Diego |
| Utilities index | 169.8 | 155.6 | 9.2% higher in San Diego |
| Transportation index | 100.0 | 104.4 | 4.3% higher in South Gate |
| Healthcare index | 100.0 | 104.3 | 4.3% higher in South Gate |
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 Diego, you'd need $96,064 in South Gate to maintain your standard of living.
Climate, safety, and demographics side by side.
South Gate, CA is about 3.9% cheaper overall than San Diego, CA, based on our cost-of-living index. Housing costs are roughly 8% higher in San Diego than in South Gate. If you earn $80,000 in San Diego, you'd need about $76,851 in South Gate to keep the same standard of living.