City comparison
Castro Valley, CA is about 10 miles (10 km) from Hayward, CA in a straight line. By road, the drive is roughly 10 miles, or about 8 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 Castro Valley, CA to Hayward, CA takes about 1 min, covering roughly 10 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.
Hayward has a population of 160,602, vs 65,444 in Castro Valley — about 2.5× larger by population. By land area, Hayward covers about 46 sq mi vs 17 sq mi for Castro Valley.
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 | Castro Valley | Hayward | Difference |
|---|---|---|---|
| Median rent | $2,383/mo | $2,260/mo | 5.4% higher in Castro Valley |
| Median home value | $1,013,900 | $775,700 | 30.7% higher in Castro Valley |
| Median household income | $132,174 | $105,371 | 25.4% higher in Castro Valley |
| Groceries index | 108.1 | 108.1 | ≈ equal |
| Utilities index | 168.3 | 168.3 | ≈ equal |
| Transportation index | 106.1 | 106.1 | ≈ equal |
| Healthcare index | 106.0 | 106.0 | ≈ equal |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Castro Valley, you'd need $99,752 in Hayward to maintain your standard of living.
Climate, safety, and demographics side by side.
Castro Valley and Hayward have nearly identical overall cost-of-living indices. If you earn $80,000 in Castro Valley, you'd need about $79,802 in Hayward to keep the same standard of living.