City comparison
Modesto, CA is about 400 miles (650 km) from San Diego, CA in a straight line. By road, the drive is roughly 500 miles, or about 8 h 15 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 Modesto, CA to San Diego, CA takes about 48 min, covering roughly 400 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 218,308 in Modesto — about 6.3× larger by population. By land area, San Diego covers about 325 sq mi vs 43 sq mi for Modesto.
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 | Modesto | San Diego | Difference |
|---|---|---|---|
| Median rent | $1,497/mo | $2,080/mo | 38.9% higher in San Diego |
| Median home value | $381,800 | $783,300 | 105.2% higher in San Diego |
| Median household income | $73,375 | $98,657 | 34.5% higher in San Diego |
| Groceries index | 105.1 | 107.6 | 2.4% higher in San Diego |
| Utilities index | 149.8 | 169.8 | 13.4% higher in San Diego |
| Transportation index | 100.7 | 100.0 | 0.6% higher in Modesto |
| Healthcare index | 100.6 | 100.0 | 0.6% higher in Modesto |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Modesto, you'd need $128,346 in San Diego to maintain your standard of living.
Climate, safety, and demographics side by side.
Modesto, CA is about 22.1% cheaper overall than San Diego, CA, based on our cost-of-living index. Housing costs are roughly 63% higher in San Diego than in Modesto. If you earn $80,000 in Modesto, you'd need about $102,677 in San Diego to keep the same standard of living.