| Index | Old Mill Creek | Illinois | National |
| Cost of living | 147 | 98 | 100 |
| Goods & Services | 97 | 98 | 100 |
| Groceries | 101 | 100 | 100 |
| Health care | 101 | 102 | 100 |
| Housing | 263 | 95 | 100 |
| Transportation | 101 | 102 | 100 |
| Utilities | 93 | 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 | $0 | $0 | $0 | $0 |
| Renters | $152,556 | $12,713 | $3,559 | $4,577 |
| 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 | Old Mill Creek | National avg. | Difference |
| Haircut | $29.76 | $27.62 | 7.8% |
| Beauty Salon | $44.52 | $51.11 | 12.9% |
| Toothpaste | $4.15 | $4.09 | 1.4% |
| Shampoo | $1.37 | $1.54 | 11.2% |
| Movie | $14.28 | $12.88 | 10.9% |
| Yoga | $19.35 | $19.66 | 1.6% |
| Item | Old Mill Creek | National avg. | Difference |
| Ground Beef | $7.87 | $7.70 | 2.1% |
| Fried Chicken | $1.54 | $1.66 | 7.4% |
| Milk | $4.70 | $4.73 | 0.7% |
| Potatoes | $5.10 | $5.26 | 3.0% |
| Pizza | $14.03 | $12.76 | 9.9% |
| Beer | $9.38 | $10.55 | 11.1% |
| Item | Old Mill Creek | National avg. | Difference |
| Optometrist | $80.23 | $140.06 | 42.7% |
| Doctor | $188.84 | $153.82 | 22.8% |
| Dentist | $118.87 | $123.15 | 3.5% |
| Ibuprofen | $12.06 | $11.73 | 2.8% |
| Lipitor | $20.95 | $23.61 | 11.3% |
| Item | Old Mill Creek | National avg. | Difference |
| Home Price | $1,054,618.00 | $326,622.00 | 222.9% |
| Avg. Mortgage Payment | $2,747.52 | $2,480.25 | 10.8% |
| Apartment Rent | $1,802.00 | $1,444.00 | 24.8% |
| Item | Old Mill Creek | National avg. | Difference |
| Gasoline | $2.90 | $3.06 | 5.0% |
| Tire Balancing | $74.93 | $65.21 | 14.9% |
| Item | Old Mill Creek | National avg. | Difference |
| All Electricity | $199.66 | $220.12 | 9.3% |
| Phone | $189.13 | $195.71 | 3.4% |
| City | Population | Cost of Living Index | National Avg. |
| Park City, IL | 7,894 | 86 | 14.4% |
| North Chicago, IL | 30,865 | 98 | 1.5% |
| Round Lake Park, IL | 8,005 | 99 | 1.0% |
| Waukegan, IL | 90,063 | 100 | 0.2% |
| Zion, IL | 24,329 | 94 | 5.8% |
| Old Mill Creek, IL | 205 | 147 | 47.3% |
| City | Population | Cost of Living Index | National Avg. |
| Hollis, AK | 205 | 128 | 28.3% |
| Lockhart, AL | 205 | 78 | 21.8% |
| Black Oak, AR | 205 | 75 | 25.3% |
| Jacksonport, AR | 205 | 70 | 29.9% |
| Pleasant Plains, AR | 205 | 80 | 20.5% |
| Old Mill Creek, IL | 205 | 147 | 47.3% |