Cost of Living Comparison Between Petaluma, CA and Longmont, CO
For one person, living is cheaper in Longmont, CO: $3,075 a month against $4,132 in Petaluma, CA, rent and utilities included – about $12,700 less a year. Rent and utilities account for most of the difference.
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Petaluma, CA Living Index201Cost of Living Index in Petaluma, CALearn more -
Longmont, CO Living Index148Cost of Living Index in Longmont, COLearn more
How much you'll spend in Petaluma, CA and in Longmont, CO
Real prices from locals and on-the-ground checks – rent, groceries, transit and the daily extras. Here's what a month in Petaluma, CA and in Longmont, CO actually costs, broken down by who's living it.
Monthly costs for one person with rent: $4,132 in Petaluma, CA versus $3,075 in Longmont, CO.
- Petaluma, CA $4,132
- Longmont, CO $3,075
Estimated couple costs with rent: $5,909 in Petaluma, CA versus $4,586 in Longmont, CO.
- Petaluma, CA $5,909
- Longmont, CO $4,586
Monthly costs for a family of three with rent: $7,686 in Petaluma, CA versus $6,096 in Longmont, CO.
- Petaluma, CA $7,686
- Longmont, CO $6,096
Living in Petaluma, CA is roughly 34% more expensive than in Longmont, CO, and outside of rent the biggest gap is in transport.
Both cities are pricier than the global median: Petaluma, CA 205% above, Longmont, CO 127% above.
CityCost data is based on AI and user input – minor inaccuracies may occur.
Last update for Petaluma, CA: October 20, 2026
Last update for Longmont, CO: October 19, 2026
Categories marked with * are only partly priced – their share counts the items that do have prices.
Categories marked with * are only partly priced – their share counts the items that do have prices.
Cost Breakdown
A one-bedroom apartment in the center runs $2,364 in Petaluma, CA and $1,726 in Longmont, CO. Housing cost is often the main lever when comparing two cities.
Longmont, CO pays 49% more on average while also being the cheaper of the two. The combined effect is a noticeably stronger local purchasing power.
Dining out: $91.0 in Petaluma, CA vs $80.0 in Longmont, CO for a mid-range dinner for two. Groceries echo the gap at $551 vs $451 per month, with Longmont, CO cheaper across the board.
- Petaluma, CA Longmont, CO 1,520 km ≈ 2 h 30 min nonstop flight
- Petaluma, CA
- Longmont, 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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