| HOUSING | Carnation | Union City | United States |
| Median Home Age | 32.2 | 32.1 | 35.1 |
| Median Home Cost | $331,700 | $379,600 | $153,800 |
| Home Appreciation | -0.22% | 1.07% | 1.62% |
| Homes Owned | 69.77% | 63.88% | 57.69% |
| Housing Vacant | 5.11% | 3.88% | 11.38% |
| Homes Rented | 25.11% | 32.24% | 30.93% |
| Property Tax Rate | $10.66 | $7.10 | $11.20 |
| OWNER-OCCUPIED HOUSING UNITS BY VALUE | | | |
| Less Than $20,000 | 0.00% | 0.41% | 2.72% |
| $20,000 to $39,999 | 0.00% | 1.21% | 4.03% |
| $40,000 to $59,999 | 0.24% | 2.49% | 5.58% |
| $60,000 to $79,999 | 0.48% | 1.39% | 7.09% |
| $80,000 to $99,999 | 0.96% | 1.23% | 8.80% |
| $100,000 to $149,999 | 2.15% | 1.39% | 21.26% |
| $150,000 to $199,999 | 9.09% | 3.13% | 14.87% |
| $200,000 to $299,999 | 41.63% | 14.07% | 16.82% |
| $300,000 to $399,999 | 18.18% | 20.23% | 7.83% |
| $400,000 to $499,999 | 14.83% | 21.77% | 4.04% |
| $500,000 to $749,999 | 10.53% | 25.45% | 4.05% |
| $750,000 to $999,999 | 0.48% | 5.45% | 1.26% |
| $1,000,000 or more | 1.44% | 1.78% | 1.64% |
| HOUSING UNITS BY YEAR STRUCTURE BUILT | | | |
| 1999 to 2005 | 3.04% | 11.12% | 13.71% |
| 1995 to 1998 | 22.53% | 14.57% | 14.31% |
| 1990 to 1994 | 22.53% | 14.57% | 14.31% |
| 1980 to 1989 | 21.00% | 18.08% | 13.87% |
| 1970 to 1979 | 15.53% | 35.84% | 16.17% |
| 1960 to 1969 | 6.85% | 11.83% | 11.70% |
| 1950 to 1959 | 4.57% | 5.14% | 11.08% |
| 1940 to 1949 | 5.78% | 1.71% | 6.02% |
| 1939 or Earlier | 20.70% | 1.70% | 13.15% |
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