Based on the census data from the year 2000, Penergrass, GA, housed a population of 876 individuals distributed across 304 households and 227 families. The town displayed a population density of 1,061.2 residents per square mile (409.7/km2). The total count of housing units reached 325, with an average density of 393.7 per square mile (152.0/km2). Demographically, the town showcased diversity, with 79.22% identifying as White, 3.08% as African American, 0.34% as Native American, 5.94% as Asian, 9.02% from other racial backgrounds, and 2.40% identifying with two or more races. Hispanic or Latino individuals constituted 20.09% of the overall population.
Household compositions in Penergrass reflected a variety of structures, with 37.5% of households including children under 18 years old. Additionally, 58.2% were classified as married couples, 8.9% were led by a female householder without a husband present, and 25.3% were categorized as non-families. Individual households made up 21.7% of the total, and 6.6% were occupied by individuals aged 65 or older. On average, households comprised 2.88 individuals, while families averaged 3.35 members.