| Index | Dennis | Massachusetts | National |
| Cost of living | 149 | 133 | 100 |
| Goods & Services | 122 | 122 | 100 |
| Groceries | 105 | 105 | 100 |
| Health care | 113 | 113 | 100 |
| Housing | 219 | 165 | 100 |
| Transportation | 118 | 118 | 100 |
| Utilities | 134 | 134 | 100 |


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| Cost of living index | |
| Goods & Services index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities index |
| Median Income | Per Year | Per Month | Max Budget (28% DTI) | Max Budget (36% DTI) |
| Owners | $94,167 | $7,847 | $2,197 | $2,825 |
| Renters | $93,179 | $7,765 | $2,174 | $2,796 |
| State | General Sales Tax | With Max Surtax |
| Massachusetts | 6.25% | 6.25% |
| State | Income Tax (Low) | Income Tax (High) |
| Massachusetts | 5% | 9% |
| Item | Dennis | National avg. | Difference |
| Haircut | $43.72 | $24.26 | 80.2% |
| Beauty Salon | $65.56 | $45.56 | 43.9% |
| Toothpaste | $3.53 | $3.70 | 4.7% |
| Shampoo | $1.49 | $1.28 | 16.4% |
| Movie | $15.49 | $12.13 | 27.6% |
| Bowling | $29.33 | $18.00 | 63.0% |
| Item | Dennis | National avg. | Difference |
| Ground Beef | $5.48 | $5.84 | 6.2% |
| Fried Chicken | $1.45 | $1.57 | 8.0% |
| Milk | $4.76 | $4.67 | 1.9% |
| Potatoes | $4.99 | $4.93 | 1.1% |
| Pizza | $12.52 | $12.09 | 3.6% |
| Beer | $10.21 | $10.41 | 1.9% |
| Item | Dennis | National avg. | Difference |
| Optometrist | $123.17 | $125.68 | 2.0% |
| Doctor | $157.89 | $135.78 | 16.3% |
| Dentist | $149.22 | $113.29 | 31.7% |
| Ibuprofen | $11.39 | $10.65 | 6.9% |
| Lipitor | $384.69 | $468.60 | 17.9% |
| Item | Dennis | National avg. | Difference |
| Home Price | $480,500.00 | $184,700.00 | 160.2% |
| Avg. Mortgage Payment | $4,745.89 | $2,346.69 | 102.2% |
| Apartment Rent | $1,180.00 | $949.00 | 24.3% |
| Item | Dennis | National avg. | Difference |
| Gasoline | $3.43 | $3.46 | 0.9% |
| Tire Balancing | $97.39 | $59.92 | 62.5% |
| Item | Dennis | National avg. | Difference |
| All Electricity | $302.72 | $193.99 | 56.0% |
| Phone | $187.85 | $192.25 | 2.3% |
| City | Population | Cost of Living Index | National Avg. |
| Popponesset Island, MA | 35 | 109 | 8.7% |
| Popponesset, MA | 202 | 109 | 8.7% |
| South Dennis, MA | 2,895 | 133 | 33.3% |
| West Yarmouth, MA | 6,388 | 127 | 27.1% |
| Dennis Port, MA | 3,523 | 127 | 27.4% |
| Dennis, MA | 1,962 | 149 | 49.3% |
| City | Population | Cost of Living Index | National Avg. |
| North Fork, AZ | 1,963 | 89 | 10.9% |
| Breckinridge Center, KY | 1,961 | 86 | 14.2% |
| Questa, NM | 1,961 | 92 | 7.9% |
| Clinton, NY | 1,961 | 109 | 8.6% |
| Great River, NY | 1,961 | 174 | 74.0% |
| Dennis, MA | 1,962 | 149 | 49.3% |