Cost of Living Comparison Between Fairfield, CA and Boulder, CO
For one person, living is cheaper in Boulder, CO: $3,303 a month against $3,978 in Fairfield, CA, rent and utilities included – about $8,100 less a year. Rent and utilities account for most of the difference.
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Fairfield, CA Living Index190Cost of Living Index in Fairfield, CALearn more -
Boulder, CO Living Index159Cost of Living Index in Boulder, COLearn more
How much you'll spend in Fairfield, 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 Fairfield, CA and in Boulder, CO actually costs, broken down by who's living it.
A single person spends $3,978 per month in Fairfield, CA vs $3,303 in Boulder, CO, rent included.
- Fairfield, CA $3,978
- Boulder, CO $3,303
A couple spends around $5,242 per month in Fairfield, CA vs $4,905 in Boulder, CO, rent included.
- Fairfield, CA $5,242
- Boulder, CO $4,905
A family of three spends $6,507 per month in Fairfield, CA vs $6,508 in Boulder, CO, rent included.
- Fairfield, CA $6,507
- Boulder, CO $6,508
Fairfield, CA costs about 20% more than Boulder, CO, and outside of rent the biggest gap is in leisure.
Both Fairfield, CA and Boulder, CO sit above the global median – Fairfield, CA by 194%, Boulder, CO by 144%.
CityCost data is based on AI and user input – minor inaccuracies may occur.
Last update for Fairfield, CA: November 1, 2026
Last update for Boulder, CO: October 31, 2026
Cost Breakdown
A central one-bedroom costs $2,396 in Fairfield, CA versus $2,181 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 16% 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 $89 in Fairfield, CA versus $79 in Boulder, CO. Groceries tell a different story – $463 in Fairfield, CA vs $472 in Boulder, CO – so Fairfield, CA wins on supermarket bills even if dining out costs more.
- Fairfield, CA Boulder, CO 1,430 km ≈ 2 h 15 min nonstop flight
- Fairfield, CA
- Boulder, CO
Distances are measured in a straight line. Your location is detected approximately.
City Median Internet Speeds Comparison (Updated April 2026)
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