Population for Plainfield, IN (2000): 18,396 comprising 9,265 (50.4%) males and 9,131 (49.6%) females.
Land area: 18.0 square miles.
Zip code/s for the area: 46168
Calculated median demographics: Resident age: 35.5 years | Household income: $46,782 | House value: $124,900 |
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