Cost of Living Comparison Between San Diego, CA and Boulder, CO
For one person, living is cheaper in Boulder, CO: $3,518 a month against $4,012 in San Diego, CA, rent and utilities included – about $5,900 less a year. Higher rent and utilities in San Diego, CA outweigh lower spending on other living expenses.
-
San Diego, CA Living Index196Cost of Living Index in San Diego, CALearn more -
Boulder, CO Living Index169Cost of Living Index in Boulder, COLearn more
How much you'll spend in San Diego, CA and in Boulder, CO
Real prices from locals and on-the-ground checks – rent, groceries, transit and the daily extras. Here's what a month in San Diego, CA and in Boulder, CO actually costs, broken down by who's living it.
A single person spends $4,012 per month in San Diego, CA vs $3,518 in Boulder, CO, rent included.
- San Diego, CA $4,012
- Boulder, CO $3,518
A couple spends around $6,068 per month in San Diego, CA vs $5,103 in Boulder, CO, rent included.
- San Diego, CA $6,068
- Boulder, CO $5,103
A family of three spends $8,123 per month in San Diego, CA vs $6,689 in Boulder, CO, rent included.
- San Diego, CA $8,123
- Boulder, CO $6,689
San Diego, CA costs about 14% more than Boulder, CO, and outside of rent the biggest gap is in transport.
Both San Diego, CA and Boulder, CO sit above the global median – San Diego, CA by 196%, Boulder, CO by 160%.
CityCost data is based on AI and user input – minor inaccuracies may occur.
Last update for San Diego, CA: October 18, 2026
Last update for Boulder, CO: October 17, 2026
Cost Breakdown
A central one-bedroom costs $3,207 in San Diego, CA versus $2,374 in Boulder, CO. Rent is usually the largest line item in a monthly budget, so the gap here sets the tone for the overall comparison.
Salaries run about 12% higher in Boulder, CO, which reinforces the cost advantage – you earn more and spend less. Purchasing power leans clearly in its favor.
A mid-range dinner for two costs $101 in San Diego, CA versus $79.0 in Boulder, CO. Monthly groceries follow the same trend: $477 vs $470 – making Boulder, CO the more affordable choice for daily food spending.
- San Diego, CA Boulder, CO 1,310 km ≈ 2 h 15 min nonstop flight
- San Diego, CA
- Boulder, CO
Distances are measured in a straight line. Your location is detected approximately.
City Median Internet Speeds Comparison (Updated April 2026)
Is Boulder, CO cheaper than San Diego, CA?
What income do you need for each city?
Which city has lower housing costs?
How do food prices compare in San Diego, CA and in Boulder, CO?
Is eating out cheaper in San Diego, CA or in Boulder, CO?
Is $2,500 enough to cover costs in San Diego, CA or in Boulder, CO?
Is San Diego, CA or Boulder, CO more family-friendly?
Which city is safer, San Diego, CA or Boulder, CO?
Which city is the better choice to relocate to?
San Diego, CA vs other spots: cost of living compared
Similar cities
Geneva
Miami, FL
Washington, DC
Reykjavik
Honolulu, HI
Irvine, CA