Head-to-Head · City Comparison
San Diego, CA
VS
San Mateo, CA
🏆 San Mateo leads 13 of 22 categories
San Diego
California
9
wins
Cost of Living Index
111.5⚠ High ✓ Cheaper
Median Household Income
$98,657
Violent Crime Index
108⚠ High
Population
1,383,987 ✓ Larger
San Mateo
California
13
wins
Cost of Living Index
118.2⚠ High
Median Household Income
$149,152 ✓ Higher
Violent Crime Index
64 ✓ Safer
Population
104,165
Pros & Cons
Auto-generated from official data — head-to-head differences and gaps vs the national average.
San Diego, CA
Pros
Homes cost $726k less ($783,300 vs $1,508,900)
Rent averages $891/mo less ($2,080 vs $2,971)
Commutes run 5 min shorter each way
Milder winters — January highs near 67°F vs 58°F
7% cheaper overall cost of living than San Mateo
Cons
Median income trails San Mateo by $50,495/yr
Living costs are well above the U.S. average (index 111.5)
Higher unemployment (6.1% vs 4.7%)
San Mateo, CA
Pros
Households earn $50,495 more per year on average
41% less violent crime than San Diego
Violent crime is well below the national average (243.2 vs 380/100k)
Stronger job market — unemployment is 1.4 pts lower (4.7%)
More college-educated — 58.2% hold a bachelor's or higher
Cooler summers — July highs near 73°F vs 80°F
Cons
Pricier housing — median home is $1,508,900
Higher rents — median is $2,971/mo
Living costs are well above the U.S. average (index 118.2)
Longer commutes — 28.5 min average each way
Key Differences at a Glance
San Diego
Cost of Living
7% cheaper
COL index 111.5 vs 118.2 (100 = US avg)
San Diego
Median Home Value
$726k less
$783,300 vs $1,508,900
San Diego
Summer Heat
7.2°F warmer
July avg high 79.8°F vs 72.6°F
San Mateo
Median Income
$50,495
$149,152 vs $98,657/yr
San Mateo
Violent Crime
41% lower
243.2 vs 412.2 per 100k
San Mateo
Unemployment
1.4 pp lower
4.7% vs 6.1% unemployment
Full Data Comparison
| Metric | San Diego, CA | San Mateo, CA |
|---|---|---|
| 💰 Cost of Living | ||
| Cost of Living Index National avg = 100 · lower = cheaper | 111.5⚠ High ✓ Cheaper | 118.2⚠ High |
| Median Home Value | $783,300⚠ High ✓ Lower | $1,508,900⚠ High |
| Median Monthly Rent | $2,080⚠ High ✓ Lower | $2,971⚠ High |
| 📈 Income & Economy | ||
| Median Household Income | $98,657 | $149,152 ✓ Higher |
| Unemployment Rate | 6.1%⚠ High | 4.7%⚠ High ✓ Lower |
| Avg Commute Minutes each way | 24.0 min ✓ Shorter | 28.5 min⚠ High |
| Work From Home % | 16.9% | 19.9% ✓ Higher |
| 🔒 Safety | ||
| Crime Index 100 = national avg · lower = safer · 60% violent / 40% property | 97 | 74 ✓ Safer |
| Violent Crime Index 100 = national avg · lower = safer | 108⚠ High | 64 ✓ Safer |
| Property Crime Index 100 = national avg · lower = safer | 80 ✓ Safer | 90 |
| 🎓 Education | ||
| School Quality 100 = national avg · grad rate, staffing & attainment | B (103) | A- (113) ✓ Better |
| Student-Teacher Ratio Lower = smaller classes | 23.0:1 | 21.0:1 ✓ Smaller |
| Bachelor's Degree or Higher | 48.7% | 58.2% ✓ Higher |
| High School or Higher | 89.7% | 91.5% ✓ Higher |
| School District Name only — no quality rating available | San Diego Unified | San Mateo-Foster City |
| 🌤 Weather | ||
| Avg High — January | 67.3°F ✓ Warmer | 58.0°F |
| Avg High — July | 79.8°F ✓ Warmer | 72.6°F |
| Annual Precipitation | 11.0" ✓ Drier | 19.3" |
| Annual Snowfall | 0.0" | 0.0" |
| 👥 Demographics | ||
| Population | 1,383,987 ✓ Larger | 104,165 |
| Median Age | 35.8 | 38.1 ✓ Older |
| Homeownership Rate | 47.6% | 51.6% ✓ Higher |
| Under 18 | 19.0% | 19.6% ✓ More |
| Over 65 | 13.8% | 16.4% ✓ More |
Frequently Asked Questions
San Diego's cost of living index is 111.5 vs San Mateo's 118.2 (US average = 100).
San Diego is 7% less expensive overall.
Based on the 22 decided categories above, San Mateo leads 13 of 22 categories. San Diego wins 9 and San Mateo wins 13. The right choice depends on your priorities — use the Pros & Cons and full table above to weigh what matters to you.
Whether you're moving from San Diego to San Mateo or relocating the other way, focus on the biggest gaps: housing ($783,300 vs $1,508,900 median home), income ($98,657 vs $149,152), safety, and schools — all covered in the full table above.
San Diego, CA and San Mateo, CA are about 439 miles apart (straight-line distance). Driving distance will be longer depending on the route.