City comparison
San Diego, CA is about 425 miles (700 km) from San Ramon, CA in a straight line. By road, the drive is roughly 550 miles, or about 9 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 San Ramon, CA takes about 52 min, covering roughly 425 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 86,119 in San Ramon — about 16.1× larger by population. By land area, San Diego covers about 325 sq mi vs 20 sq mi for San Ramon.
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 | San Ramon | Difference |
|---|---|---|---|
| Median rent | $2,080/mo | $2,768/mo | 33.1% higher in San Ramon |
| Median home value | $783,300 | $1,254,900 | 60.2% higher in San Ramon |
| Median household income | $98,657 | $190,829 | 93.4% higher in San Ramon |
| Groceries index | 107.6 | 108.1 | ≈ equal (San Ramon slightly higher) |
| Utilities index | 169.8 | 168.3 | 0.9% higher in San Diego |
| Transportation index | 100.0 | 106.1 | 6.0% higher in San Ramon |
| Healthcare index | 100.0 | 106.0 | 6.0% higher in San Ramon |
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 $107,032 in San Ramon to maintain your standard of living.
Climate, safety, and demographics side by side.
San Diego, CA is about 6.6% cheaper overall than San Ramon, CA, based on our cost-of-living index. Housing costs are roughly 11% higher in San Ramon than in San Diego. If you earn $80,000 in San Diego, you'd need about $85,626 in San Ramon to keep the same standard of living.