There were 5,633 households out of which 33.30% had children under the age of 18 living with them, 62.70% were married couples living together, 9.50% had a female householder with no husband present, and 24.30% were non-families. 21.70% of all households were made up of individuals and 8.20% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 2.97.
In the county the population was spread out with 23.80% under the age of 18, 11.80% from 18 to 24, 27.80% from 25 to 44, 24.50% from 45 to 64, and 12.00% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 96.00 males. For every 100 females age 18 and over, there were 91.80 males.
The median income for a household in the county was $35,259, and the median income for a family was $39,481. Males had a median income of $31,534 versus $21,753 for females. The per capita income for the county was $16,127. About 7.50% of families and 9.70% of the population were below the poverty line, including 7.40% of those under age 18 and 12.50% of those age 65 or over.
The first settlers of Dade County won the land in Georgia's land lottery and came to work in coke and coal mines.
Georgia did not have a road connecting to Dade County until the purchase of Cloudland Canyon in 1939. The county could only be accessed through Alabama and Tennessee until then.
Covenant College, originally established in California in 1955, moved to Lookout Mountain in 1964.
Dade County had a short-lived state secessionist movement during the civil war. Dade Countians wanted to secede from the Union but the State of Georgia was cautious. Because the people of Dade County could not wait on their state to secede, they simply seceded by themselves. Not until about half a century ago did Dade County officially return to the State of Georgia.
Shortly after the Georgia State Quarter was released, Dade County gained attention over an apparent mistake in the quarter. The outline of the state of Georgia on the quarter appears to have accidentally left out Dade County, which is in the extreme northwestern part of the state.