Table 2:
Characteristics for census blocks included in analysis
| n | Mean | SD | 25th Percentile | Median | 75th percentile | |
|---|---|---|---|---|---|---|
| Hydric soil % | 13,495 | 12.2 | 20.3 | 0 | 1.0 | 16.0 |
| Acidic soil % | 13,495 | 71.9 | 36.0 | 43.0 | 95.0 | 100.0 |
| Wetland % | 13,495 | 1.5 | 6.2 | 0 | 0 | 0 |
| Cultivated crops % | 13,494 | 0.8 | 4.7 | 0 | 0 | 0 |
| Dirt road density (km/km2) | 13,495 | 0.5 | 3.7 | 0 | 0 | 0 |
| Deciduous forest % | 13,494 | 10.0 | 17.1 | 0 | 0 | 14.7 |
| Evergreen Forest % | 13,494 | 5.8 | 11.1 | 0 | 0 | 7.4 |
| Grassland % | 13,494 | 6.4 | 13.6 | 0 | 0 | 5.1 |
| Wetland % | 13,495 | 1.5 | 6.2 | 0 | 0 | 0 |
| Open water % | 13,494 | 0.2 | 1.4 | 0 | 0 | 0 |
| Public water supply, % of households | 12,953 | 74.6 | 40.9 | 50.0 | 100.0 | 100.0 |
| Impervious surface % | 13,494 | 34.0 | 31.4 | 4.9 | 25.8 | 57.1 |
| Paved road density (km/km2) | 13,495 | 29.4 | 24.0 | 12.2 | 24.1 | 40.3 |
| Population density (people/km2) | 13,495 | 1,245 | 1,267 | 292 | 919 | 1,796 |
| Median building value, $100,000 USD | 13,465 | 1.74 | 1.2 | 0.96 | 1.42 | 2.18 |
| Median age (years) | 13,495 | 40.6 | 11.2 | 33.0 | 39.0 | 48.0 |
| Female % | 13,495 | 51.4 | 10.3 | 47.3 | 51.0 | 56.0 |
| White race % | 13,495 | 65.0 | 32.3 | 43.0 | 76.0 | 91.0 |
| Black race % | 13,495 | 20.9 | 28.1 | 0 | 8.0 | 30.0 |
| Other races % | 13,495 | 12.3 | 16.6 | 0 | 7.0 | 17.0 |