City comparison
Gilroy, CA is about 375 miles (600 km) from San Diego, CA in a straight line. By road, the drive is roughly 475 miles, or about 8 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 Gilroy, CA to San Diego, CA takes about 46 min, covering roughly 375 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 58,696 in Gilroy — about 23.6× larger by population. By land area, San Diego covers about 325 sq mi vs 17 sq mi for Gilroy.
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 | Gilroy | San Diego | Difference |
|---|---|---|---|
| Median rent | $2,245/mo | $2,080/mo | 7.9% higher in Gilroy |
| Median home value | $915,200 | $783,300 | 16.8% higher in Gilroy |
| Median household income | $127,391 | $98,657 | 29.1% higher in Gilroy |
| Groceries index | 105.1 | 107.6 | 2.4% higher in San Diego |
| Utilities index | 153.0 | 169.8 | 11.0% higher in San Diego |
| Transportation index | 100.7 | 100.0 | 0.6% higher in Gilroy |
| Healthcare index | 100.6 | 100.0 | 0.6% higher in Gilroy |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Gilroy, you'd need $95,196 in San Diego to maintain your standard of living.
Climate, safety, and demographics side by side.
San Diego, CA is about 4.8% cheaper overall than Gilroy, CA, based on our cost-of-living index. Housing costs are roughly 12% higher in Gilroy than in San Diego. If you earn $80,000 in Gilroy, you'd need about $76,157 in San Diego to keep the same standard of living.