| Index | DuPont | Washington | National | 
| Cost of living | 135 | 118 | 100 | 
| Goods & Services | 113 | 111 | 100 | 
| Groceries | 109 | 110 | 100 | 
| Health care | 123 | 120 | 100 | 
| Housing | 188 | 135 | 100 | 
| Transportation | 128 | 123 | 100 | 
| Utilities | 97 | 92 | 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 | $104,861 | $8,738 | $2,447 | $3,146 | 
| Renters | $91,458 | $7,622 | $2,134 | $2,744 | 
| State | General Sales Tax | With Max Surtax | 
| Washington | 6.5% | 10.4% | 
| State | Income Tax (Low) | Income Tax (High) | 
| Washington | 0% | 0% | 
| Item | DuPont | National avg. | Difference | 
| Haircut | $24.33 | $24.26 | 0.3% | 
| Beauty Salon | $30.83 | $45.56 | 32.3% | 
| Toothpaste | $3.47 | $3.70 | 6.2% | 
| Shampoo | $1.21 | $1.28 | 5.5% | 
| Movie | $10.25 | $12.13 | 15.5% | 
| Bowling | $13.08 | $18.00 | 27.3% | 
| Item | DuPont | National avg. | Difference | 
| Ground Beef | $5.83 | $5.84 | 0.1% | 
| Fried Chicken | $2.44 | $1.57 | 55.1% | 
| Milk | $4.86 | $4.67 | 4.1% | 
| Potatoes | $4.15 | $4.93 | 16.0% | 
| Pizza | $14.32 | $12.09 | 18.5% | 
| Beer | $11.62 | $10.41 | 11.6% | 
| Item | DuPont | National avg. | Difference | 
| Optometrist | $155.39 | $125.68 | 23.6% | 
| Doctor | $188.50 | $135.78 | 38.8% | 
| Dentist | $117.89 | $113.29 | 4.1% | 
| Ibuprofen | $11.97 | $10.65 | 12.4% | 
| Lipitor | $517.22 | $468.60 | 10.4% | 
| Item | DuPont | National avg. | Difference | 
| Home Price | $343,400.00 | $184,700.00 | 85.9% | 
| Avg. Mortgage Payment | $2,126.92 | $2,346.69 | 9.4% | 
| Apartment Rent | $1,844.00 | $949.00 | 94.3% | 
| Item | DuPont | National avg. | Difference | 
| Gasoline | $4.37 | $3.46 | 26.2% | 
| Tire Balancing | $69.72 | $59.92 | 16.4% | 
| Item | DuPont | National avg. | Difference | 
| All Electricity | $126.20 | $193.99 | 34.9% | 
| Phone | $189.62 | $192.25 | 1.4% | 
| City | Population | Cost of Living Index | National Avg. | 
| Ketron Island, WA | 0 | 115 | 14.6% | 
| North Yelm, WA | 3,738 | 109 | 8.8% | 
| Nisqually Indian Community, WA | 591 | 115 | 14.6% | 
| Midland, WA | 9,518 | 118 | 17.9% | 
| Longbranch, WA | 4,568 | 117 | 17.3% | 
| DuPont, WA | 9,514 | 135 | 35.4% | 
| City | Population | Cost of Living Index | National Avg. | 
| Cedar Hills, OR | 9,514 | 138 | 38.4% | 
| Independent Hill, VA | 9,514 | 168 | 67.5% | 
| La Plata, MD | 9,516 | 127 | 27.5% | 
| Countryside, VA | 9,517 | 141 | 41.4% | 
| Cross Lanes, WV | 9,517 | 91 | 9.4% | 
| DuPont, WA | 9,514 | 135 | 35.4% |