City comparison
Fremont, CA is about 20 miles (30 km) from San Mateo, CA in a straight line. By road, the drive is roughly 30 miles, or about 26 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 Fremont, CA to San Mateo, CA takes about 2 min, covering roughly 20 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.
Fremont has a population of 228,795, vs 104,165 in San Mateo — about 2.2× larger by population. By land area, Fremont covers about 78 sq mi vs 12 sq mi for San Mateo.
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 | Fremont | San Mateo | Difference |
|---|---|---|---|
| Median rent | $2,824/mo | $2,971/mo | 5.2% higher in San Mateo |
| Median home value | $1,231,500 | $1,508,900 | 22.5% higher in San Mateo |
| Median household income | $169,023 | $149,152 | 13.3% higher in Fremont |
| 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 Fremont, you'd need $100,292 in San Mateo to maintain your standard of living.
Climate, safety, and demographics side by side.
Fremont and San Mateo have nearly identical overall cost-of-living indices. If you earn $80,000 in Fremont, you'd need about $80,234 in San Mateo to keep the same standard of living.