| HOUSING | Grafton | Billings | United States |
| Median Home Age | 38.7 | 37 | 35.1 |
| Median Home Cost | $138,600 | $138,400 | $153,800 |
| Home Appreciation | -2.18% | 2.86% | 1.62% |
| Homes Owned | 61.78% | 60.36% | 57.69% |
| Housing Vacant | 30.13% | 5.12% | 11.38% |
| Homes Rented | 8.08% | 34.52% | 30.93% |
| Property Tax Rate | $24.71 | $13.16 | $11.20 |
| OWNER-OCCUPIED HOUSING UNITS BY VALUE | | | |
| Less Than $20,000 | 1.08% | 1.99% | 2.72% |
| $20,000 to $39,999 | 0.81% | 2.57% | 4.03% |
| $40,000 to $59,999 | 1.63% | 2.69% | 5.58% |
| $60,000 to $79,999 | 3.25% | 2.81% | 7.09% |
| $80,000 to $99,999 | 5.28% | 6.53% | 8.80% |
| $100,000 to $149,999 | 24.39% | 28.25% | 21.26% |
| $150,000 to $199,999 | 25.20% | 25.37% | 14.87% |
| $200,000 to $299,999 | 28.05% | 21.23% | 16.82% |
| $300,000 to $399,999 | 7.72% | 5.15% | 7.83% |
| $400,000 to $499,999 | 2.30% | 2.04% | 4.04% |
| $500,000 to $749,999 | 0.00% | 1.08% | 4.05% |
| $750,000 to $999,999 | 0.27% | 0.12% | 1.26% |
| $1,000,000 or more | 0.00% | 0.17% | 1.64% |
| HOUSING UNITS BY YEAR STRUCTURE BUILT | | | |
| 1999 to 2005 | 14.40% | 12.74% | 13.71% |
| 1995 to 1998 | 12.44% | 10.23% | 14.31% |
| 1990 to 1994 | 12.44% | 10.23% | 14.31% |
| 1980 to 1989 | 11.13% | 12.55% | 13.87% |
| 1970 to 1979 | 12.93% | 20.39% | 16.17% |
| 1960 to 1969 | 8.76% | 11.01% | 11.70% |
| 1950 to 1959 | 5.97% | 17.01% | 11.08% |
| 1940 to 1949 | 3.68% | 7.31% | 6.02% |
| 1939 or Earlier | 30.69% | 8.77% | 13.15% |
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