There were 228 households out of which 27.6% had children under the age of 18 living with them, 58.8% were married couples living together, 10.5% had a female householder with no husband present, and 28.5% were non-families. 25.0% of all households were made up of individuals and 12.7% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.85.
In the CDP the population was spread out with 20.7% under the age of 18, 10.1% from 18 to 24, 26.7% from 25 to 44, 26.7% from 45 to 64, and 15.9% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 85.4 males. For every 100 females age 18 and over, there were 79.3 males.
The median income for a household in the CDP was $37,368, and the median income for a family was $42,292. Males had a median income of $31,359 versus $14,750 for females. The per capita income for the CDP was $19,343. About 2.3% of families and 8.2% of the population were below the poverty line, including 18.3% of those under age 18 and 16.9% of those age 65 or over.
New Washington was also the home of the defunct Marble Hill Nuclear Power Plant. It was first proposed in 1973 by Public Service of Indiana and was finally closed due to overwhelming expenditures