| Index | Johnston | South Carolina | National |
| Cost of living | 84 | 93 | 100 |
| Goods & Services | 95 | 98 | 100 |
| Groceries | 97 | 99 | 100 |
| Health care | 89 | 94 | 100 |
| Housing | 57 | 81 | 100 |
| Transportation | 93 | 96 | 100 |
| Utilities | 104 | 97 | 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 | $59,300 | $4,942 | $1,384 | $1,779 |
| Renters | $33,589 | $2,799 | $784 | $1,008 |
| State | General Sales Tax | With Max Surtax |
| South Carolina | 6% | 9% |
| State | Income Tax (Low) | Income Tax (High) |
| South Carolina | 0% | 6.5% |
| Item | Johnston | National avg. | Difference |
| Haircut | $21.61 | $27.62 | 21.8% |
| Beauty Salon | $38.92 | $51.11 | 23.8% |
| Toothpaste | $3.99 | $4.09 | 2.5% |
| Shampoo | $1.52 | $1.54 | 1.4% |
| Movie | $14.88 | $12.88 | 15.5% |
| Yoga | $17.54 | $19.66 | 10.8% |
| Item | Johnston | National avg. | Difference |
| Ground Beef | $7.67 | $7.70 | 0.5% |
| Fried Chicken | $1.50 | $1.66 | 9.8% |
| Milk | $4.70 | $4.73 | 0.7% |
| Potatoes | $4.85 | $5.26 | 7.7% |
| Pizza | $13.31 | $12.76 | 4.3% |
| Beer | $10.51 | $10.55 | 0.4% |
| Item | Johnston | National avg. | Difference |
| Optometrist | $105.66 | $140.06 | 24.6% |
| Doctor | $126.38 | $153.82 | 17.8% |
| Dentist | $102.74 | $123.15 | 16.6% |
| Ibuprofen | $11.72 | $11.73 | 0.1% |
| Lipitor | $24.26 | $23.61 | 2.8% |
| Item | Johnston | National avg. | Difference |
| Home Price | $160,123.00 | $326,622.00 | 51.0% |
| Avg. Mortgage Payment | $1,556.80 | $2,480.25 | 37.2% |
| Apartment Rent | $1,107.00 | $1,444.00 | 23.3% |
| Item | Johnston | National avg. | Difference |
| Gasoline | $2.82 | $3.06 | 7.8% |
| Tire Balancing | $61.45 | $65.21 | 5.8% |
| Item | Johnston | National avg. | Difference |
| All Electricity | $234.47 | $220.12 | 6.5% |
| Phone | $198.41 | $195.71 | 1.4% |
| City | Population | Cost of Living Index | National Avg. |
| Ridge Spring, SC | 697 | 80 | 20.5% |
| Saluda, SC | 3,688 | 80 | 19.7% |
| Monetta, SC | 258 | 81 | 19.1% |
| Edgefield, SC | 4,930 | 83 | 16.9% |
| Ward, SC | 220 | 85 | 14.5% |
| Johnston, SC | 2,607 | 84 | 15.7% |
| City | Population | Cost of Living Index | National Avg. |
| Colwyn, PA | 2,607 | 94 | 6.2% |
| Marysville, PA | 2,607 | 99 | 0.6% |
| Colby, WI | 2,607 | 90 | 10.3% |
| Cannon AFB, NM | 2,606 | 105 | 4.7% |
| South Alamo, TX | 2,606 | 73 | 27.5% |
| Johnston, SC | 2,607 | 84 | 15.7% |