|• Total||1.4 sq mi (3.7 km2)|
|• Land||1.4 sq mi (3.7 km2)|
|• Density||150/sq mi (59/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
Brandonville is located at (40.860825, -76.166718).
According to the United States Census Bureau, the CDP has a total area of 1.4 square miles (3.6 km2), all of it land.
As of the census of 2000, there were 217 people, 90 households, and 59 families residing in the CDP. The population density was 153.4 people per square mile (59.4/km²). There were 99 housing units at an average density of 70.0/sq mi (27.1/km²). The racial makeup of the CDP was 100.00% White.
As of July 2007 according to city-data.com there are 212 people in Brandonville. 113 males and 99 females with an average age of 44.5. 
There were 90 households out of which 23.3% had children under the age of 18 living with them, 43.3% were married couples living together, 11.1% had a female householder with no husband present, and 34.4% were non-families. 31.1% of all households were made up of individuals and 14.4% had someone living alone who was 65 years of age or older. The average household size was 2.41 and the average family size was 2.98.
In the CDP the population was spread out with 19.4% under the age of 18, 6.5% from 18 to 24, 24.4% from 25 to 44, 27.6% from 45 to 64, and 22.1% who were 65 years of age or older. The median age was 44 years. For every 100 females there were 114.9 males. For every 100 females age 18 and over, there were 105.9 males.
The median income for a household in the CDP was $26,125, and the median income for a family was $36,875. Males had a median income of $25,833 versus $20,417 for females. The per capita income for the CDP was $14,973. About 3.8% of families and 7.7% of the population were below the poverty line, including 4.8% of those under the age of eighteen and none of those sixty five or over.