City comparison
National City, CA is about 10 miles (20 km) from San Diego, CA in a straight line. By road, the drive is roughly 10 miles, or about 13 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 National City, CA to San Diego, 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.
San Diego has a population of 1,383,987, vs 56,345 in National City — about 24.6× larger by population. By land area, San Diego covers about 325 sq mi vs 7.3 sq mi for National City.
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 | National City | San Diego | Difference |
|---|---|---|---|
| Median rent | $1,504/mo | $2,080/mo | 38.3% higher in San Diego |
| Median home value | $505,800 | $783,300 | 54.9% higher in San Diego |
| Median household income | $59,850 | $98,657 | 64.8% higher in San Diego |
| Groceries index | 107.6 | 107.6 | ≈ equal |
| Utilities index | 169.8 | 169.8 | ≈ equal |
| Transportation index | 100.0 | 100.0 | ≈ equal |
| Healthcare index | 100.0 | 100.0 | ≈ 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 National City, you'd need $101,247 in San Diego to maintain your standard of living.
Climate, safety, and demographics side by side.
National City, CA is about 1.2% cheaper overall than San Diego, CA, based on our cost-of-living index. Housing costs are roughly 2% higher in San Diego than in National City. If you earn $80,000 in National City, you'd need about $80,997 in San Diego to keep the same standard of living.