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Issac H. Dimond came to the area in 1848, and as one of his enterprises began to construct and a dam on the Grand River. A grist mill was completed by 1856,Issac had the village platted for him by Hosey Harvey in 1856. In 1878 The Lake Shore & Michigan Southern Railroad came through and it was given a station as Diamondale. In 1906 Dimondale was incorporated as a village.
Geography\nAccording to the United States Census Bureau, the village has a total area of 2.5 km² (1.0 mi²). 2.5 km² (1.0 mi²) of it is land and none of it is covered by water.
Demographics\nAs of the census of 2000, there are 1,342 people, 473 households, and 376 families residing in the village. The population density is 534.2/km² (1,383.5/mi²). There are 485 housing units at an average density of 193.1/km² (500.0/mi²). The racial makeup of the village is 96.42% White, 0.75% African American, 0.75% Native American, 0.15% Asian, 0.00% Pacific Islander, 0.75% from other races, and 1.19% from two or more races. 2.91% of the population are Hispanic or Latino of any race.
There are 473 households out of which 42.5% have children under the age of 18 living with them, 67.4% are married couples living together, 9.5% have a female householder with no husband present, and 20.3% are non-families. 15.9% of all households are made up of individuals and 4.7% have someone living alone who is 65 years of age or older. The average household size is 2.82 and the average family size is 3.19.
In the village the population is spread out with 29.4% under the age of 18, 7.5% from 18 to 24, 28.6% from 25 to 44, 25.9% from 45 to 64, and 8.6% who are 65 years of age or older. The median age is 38 years. For every 100 females there are 94.2 males. For every 100 females age 18 and over, there are 91.5 males.
The median income for a household in the village is $57,917, and the median income for a family is $64,444. Males have a median income of $49,318 versus $30,380 for females. The per capita income for the village is $23,611. 3.7% of the population and 2.5% of families are below the poverty line. Out of the total people living in poverty, 4.4% are under the age of 18 and 3.2% are 65 or older.