| Zip Code : | 49401 |
| City : | Allendale |
| County : | Ottawa County |
| State : | Michigan (MI) |
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| Land Area : | 25.68 sq mi |
| Water Area : | 0.51 sq mi |
| Latitude : | 42.9756560 |
| Longitude : | -85.9392865 |
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| Population (2010): | 20,735 |
| Population Estimate (2012) : | 19,437 |
| Population Density : | 807.56/sq mi |
| Housing Units (2012) : | 5,832 |
| Median Household Income (2012) : | $45,244 (Michigan : $48,471, USA : $53,046) |
| Median Family Income (2012) : | $69,193 (Michigan : $60,749, USA : $64,585) |
| Median House Price (2012) : | $161,300 (Michigan : $128,600, USA : $181,400) |