City comparison
San Diego, CA is about 125 miles (225 km) from Simi Valley, CA in a straight line. By road, the drive is roughly 175 miles, or about 2 h 45 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 San Diego, CA to Simi Valley, CA takes about 16 min, covering roughly 125 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 126,153 in Simi Valley — about 11.0× larger by population. By land area, San Diego covers about 325 sq mi vs 42 sq mi for Simi 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 | San Diego | Simi Valley | Difference |
|---|---|---|---|
| Median rent | $2,080/mo | $2,402/mo | 15.5% higher in Simi Valley |
| Median home value | $783,300 | $704,200 | 11.2% higher in San Diego |
| Median household income | $98,657 | $112,144 | 13.7% higher in Simi Valley |
| Groceries index | 107.6 | 105.1 | 2.4% higher in San Diego |
| Utilities index | 169.8 | 150.4 | 12.9% higher in San Diego |
| Transportation index | 100.0 | 100.7 | 0.6% higher in Simi Valley |
| Healthcare index | 100.0 | 100.6 | 0.6% higher in Simi Valley |
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 $97,053 in Simi Valley to maintain your standard of living.
Climate, safety, and demographics side by side.
Simi Valley, CA is about 2.9% cheaper overall than San Diego, CA, based on our cost-of-living index. Housing costs are roughly 3% higher in San Diego than in Simi Valley. If you earn $80,000 in San Diego, you'd need about $77,643 in Simi Valley to keep the same standard of living.