| Index | Lake Mary Ronan | Montana | National |
| Cost of living | 117 | 101 | 100 |
| Goods & Services | 100 | 104 | 100 |
| Groceries | 111 | 103 | 100 |
| Health care | 112 | 98 | 100 |
| Housing | 146 | 99 | 100 |
| Transportation | 118 | 109 | 100 |
| Utilities | 97 | 93 | 100 |
| 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 | $40,938 | $3,412 | $955 | $1,228 |
| Renters | $0 | $0 | $0 | $0 |
| State | General Sales Tax | With Max Surtax |
| Montana | 0% | 0% |
| State | Income Tax (Low) | Income Tax (High) |
| Montana | 1% | 6.75% |
| Item | Lake Mary Ronan | National avg. | Difference |
| Haircut | $27.83 | $24.26 | 14.7% |
| Beauty Salon | $51.82 | $45.56 | 13.7% |
| Toothpaste | $3.72 | $3.70 | 0.4% |
| Shampoo | $1.29 | $1.28 | 0.6% |
| Movie | $14.89 | $12.13 | 22.7% |
| Bowling | $23.19 | $18.00 | 28.8% |
| Item | Lake Mary Ronan | National avg. | Difference |
| Ground Beef | $6.17 | $5.84 | 5.7% |
| Fried Chicken | $2.22 | $1.57 | 41.0% |
| Milk | $4.92 | $4.67 | 5.3% |
| Potatoes | $4.89 | $4.93 | 0.9% |
| Pizza | $11.23 | $12.09 | 7.1% |
| Beer | $11.57 | $10.41 | 11.1% |
| Item | Lake Mary Ronan | National avg. | Difference |
| Optometrist | $165.73 | $125.68 | 31.9% |
| Doctor | $168.55 | $135.78 | 24.1% |
| Dentist | $118.01 | $113.29 | 4.2% |
| Ibuprofen | $11.49 | $10.65 | 7.9% |
| Lipitor | $477.18 | $468.60 | 1.8% |
| Item | Lake Mary Ronan | National avg. | Difference |
| Home Price | $268,800.00 | $184,700.00 | 45.5% |
| Avg. Mortgage Payment | $2,282.29 | $2,346.69 | 2.7% |
| Apartment Rent | $0.00 | $949.00 | 100.0% |
| Item | Lake Mary Ronan | National avg. | Difference |
| Gasoline | $4.30 | $3.46 | 24.2% |
| Tire Balancing | $60.58 | $59.92 | 1.1% |
| Item | Lake Mary Ronan | National avg. | Difference |
| All Electricity | $178.20 | $193.99 | 8.1% |
| Phone | $201.25 | $192.25 | 4.7% |
| City | Population | Cost of Living Index | National Avg. |
| Big Arm, MT | 89 | 94 | 5.9% |
| Rollins, MT | 156 | 94 | 5.9% |
| Elmo, MT | 252 | 94 | 5.9% |
| Niarada, MT | 8 | 105 | 4.7% |
| Forest Hill Village, MT | 99 | 83 | 17.4% |
| Lake Mary Ronan, MT | 45 | 117 | 17.0% |
| City | Population | Cost of Living Index | National Avg. |
| Libertyville, AL | 45 | 93 | 7.1% |
| Hensley, AR | 45 | 100 | 0.2% |
| Volcano, CA | 45 | 112 | 11.6% |
| Anderson, IA | 45 | 97 | 3.4% |
| Balltown, IA | 45 | 99 | 0.8% |
| Lake Mary Ronan, MT | 45 | 117 | 17.0% |
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