Lake Sumner is a CDP located in De Baca County, New Mexico. Lake Sumner has a 2026 population of 48. Lake Sumner is currently declining at a rate of -11.11% 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 Lake Sumner is 37.9 years: 37.8 years for males, and 59.7 years for females. For every 100 females there are 975.0 males.
Data after 2023 is projected based on recent change
Overall: 37.9 years
Female: 59.7 years
Male: 37.8 years
There are 86 adults, (18 of whom are seniors) in Lake Sumner.
Female: 8 (9.3%)
Male: 78 (90.7%)
The racial composition of Lake Sumner includes 44.19% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Two or more races | 48 | 55.81% |
| White | 38 | 44.19% |