| Index | Millbrook | Illinois | National |
| Cost of living | 113 | 98 | 100 |
| Goods & Services | 95 | 98 | 100 |
| Groceries | 102 | 100 | 100 |
| Health care | 106 | 102 | 100 |
| Housing | 149 | 95 | 100 |
| Transportation | 100 | 102 | 100 |
| Utilities | 92 | 98 | 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 | $159,136 | $13,261 | $3,713 | $4,775 |
| Renters | $102,511 | $8,543 | $2,392 | $3,076 |
| State | General Sales Tax | With Max Surtax |
| Illinois | 6.25% | 10.25% |
| State | Income Tax (Low) | Income Tax (High) |
| Illinois | 4.95% | 4.95% |
| Item | Millbrook | National avg. | Difference |
| Haircut | $34.68 | $27.62 | 25.6% |
| Beauty Salon | $49.26 | $51.11 | 3.6% |
| Toothpaste | $4.20 | $4.09 | 2.6% |
| Shampoo | $1.57 | $1.54 | 1.8% |
| Movie | $13.38 | $12.88 | 3.9% |
| Yoga | $19.19 | $19.66 | 2.4% |
| Item | Millbrook | National avg. | Difference |
| Ground Beef | $7.75 | $7.70 | 0.6% |
| Fried Chicken | $1.55 | $1.66 | 6.8% |
| Milk | $4.91 | $4.73 | 3.7% |
| Potatoes | $5.39 | $5.26 | 2.5% |
| Pizza | $12.49 | $12.76 | 2.1% |
| Beer | $10.64 | $10.55 | 0.9% |
| Item | Millbrook | National avg. | Difference |
| Optometrist | $172.44 | $140.06 | 23.1% |
| Doctor | $185.97 | $153.82 | 20.9% |
| Dentist | $118.42 | $123.15 | 3.8% |
| Ibuprofen | $11.87 | $11.73 | 1.2% |
| Lipitor | $22.73 | $23.61 | 3.7% |
| Item | Millbrook | National avg. | Difference |
| Home Price | $547,800.00 | $326,622.00 | 67.7% |
| Avg. Mortgage Payment | $1,634.41 | $2,480.25 | 34.1% |
| Apartment Rent | $1,530.00 | $1,444.00 | 6.0% |
| Item | Millbrook | National avg. | Difference |
| Gasoline | $3.16 | $3.06 | 3.6% |
| Tire Balancing | $60.21 | $65.21 | 7.7% |
| Item | Millbrook | National avg. | Difference |
| All Electricity | $188.19 | $220.12 | 14.5% |
| Phone | $201.97 | $195.71 | 3.2% |
| City | Population | Cost of Living Index | National Avg. |
| Leland, IL | 964 | 94 | 6.5% |
| Sheridan, IL | 2,894 | 95 | 4.6% |
| Waterman, IL | 1,801 | 96 | 4.3% |
| Newark, IL | 1,376 | 96 | 3.6% |
| Lisbon, IL | 291 | 96 | 3.6% |
| Millbrook, IL | 367 | 113 | 12.8% |
| City | Population | Cost of Living Index | National Avg. |
| Muir Beach, CA | 367 | 287 | 187.2% |
| Fisher Island, FL | 367 | 402 | 301.5% |
| Atalissa, IA | 367 | 87 | 12.9% |
| Sadorus, IL | 367 | 90 | 9.8% |
| Ste. Marie, IL | 367 | 84 | 16.3% |
| Millbrook, IL | 367 | 113 | 12.8% |