City comparison
Hayward, CA is about 425 miles (700 km) from San Diego, 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 Hayward, CA to San Diego, 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 160,602 in Hayward — about 8.6× larger by population. By land area, San Diego covers about 325 sq mi vs 46 sq mi for Hayward.
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 | Hayward | San Diego | Difference |
|---|---|---|---|
| Median rent | $2,260/mo | $2,080/mo | 8.7% higher in Hayward |
| Median home value | $775,700 | $783,300 | 1.0% higher in San Diego |
| Median household income | $105,371 | $98,657 | 6.8% higher in Hayward |
| Groceries index | 108.1 | 107.6 | ≈ equal (Hayward slightly higher) |
| Utilities index | 168.3 | 169.8 | 0.9% higher in San Diego |
| Transportation index | 106.1 | 100.0 | 6.0% higher in Hayward |
| Healthcare index | 106.0 | 100.0 | 6.0% higher in Hayward |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Hayward, you'd need $94,384 in San Diego to maintain your standard of living.
Climate, safety, and demographics side by side.
San Diego, CA is about 5.6% cheaper overall than Hayward, CA, based on our cost-of-living index. Housing costs are roughly 9% higher in Hayward than in San Diego. If you earn $80,000 in Hayward, you'd need about $75,507 in San Diego to keep the same standard of living.