Harvest is an unincorporated community and census-designated place located in the northwestern part of Madison County, Alabama, and is included in the Huntsville-Decatur Combined Statistical Area. Harvest was part of the Cherokee lands until about 1810. It had been a settled community for many thousands of years prior to this. A rail road was extended south from Fayetteville, Tennessee to the community of Capshaw some 5 miles (8 km) south south west of present day Harvest. This rail road went bankrupt in the economic troubles that lead to the Great Depression of the 1930's. The track of this rail road remains to this day as "Old Railroad Bed Road."

As of the censusGR2 of 2000, there were 3,054 people, 1,092 households, and 898 families residing in the community. The population density was 94.9/km˛ (245.8/mi˛). There were 1,146 housing units at an average density of 35.6/km˛ (92.2/mi˛). The racial makeup of the community was 76.56% White, 18.76% Black or African American, 1.28% Native American, 1.11% Asian, 0.20% from other races, and 2.10% from two or more races. 0.98% of the population were Hispanic or Latino of any race. There were 1,092 households out of which 39.9% had children under the age of 18 living with them, 72.5% were married couples living together, 7.1% had a female householder with no husband present, and 17.7% were non-families. 15.8% of all households were made up of individuals and 5.0% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 3.13.

In the community the population was spread out with 28.6% under the age of 18, 5.6% from 18 to 24, 34.3% from 25 to 44, 23.6% from 45 to 64, and 8.0% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 102.8 males. For every 100 females age 18 and over, there were 97.5 males. The median income for a household in the community was $61,319, and the median income for a family was $64,519. Males had a median income of $46,813 versus $30,114 for females. The per capita income for the community was $23,322. About 6.8% of families and 8.0% of the population were below the poverty line, including 7.2% of those under age 18 and 4.2% of those age 65 or over.