Old Green is a CDP located in Adair County, Oklahoma. Old Green has a 2026 population of 453. Old Green is currently growing at a rate of 2.03% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The median age in Old Green is 31.5 years: 31.5 years for males, and 31.3 years for females. For every 100 females there are 74.0 males.
Data after 2023 is projected based on recent change
Overall: 31.5 years
Female: 31.3 years
Male: 31.5 years
There are 181 adults, (18 of whom are seniors) in Old Green.
Female: 173 (57.5%)
Male: 128 (42.5%)
The racial composition of Old Green includes 79.73% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 240 | 79.73% |
| Two or more races | 61 | 20.27% |