Bluewater was first listed as a
census designated place in the
1990 U.S. census. 1.7% of residents lived in urban areas, while 98.3% lived in rural areas. The whole population lived in households. There were 67 households in Bluewater, of which 13.4% had children under the age of 18 living in them. Of all households, 41.8% were married-couple households, 4.5% were
cohabiting couple households, 26.9% were households with a male householder and no spouse or partner present, and 26.9% were households with a female householder and no spouse or partner present. About 41.8% of all households were made up of individuals and 20.9% had someone living alone who was 65 years of age or older. The average household size was 1.73. There were 32
families (47.8% of all households). There were 424 housing units at an average density of , of which 84.2% were vacant. Of occupied units, 62 (92.5%) were owner-occupied and 5 (7.5%) were occupied by renters. The homeowner vacancy rate was 1.6% and the rental vacancy rate was 16.7%. ==Government==