Lempster is located in Sullivan County, New Hampshire. Lempster has a 2025 population of 1,166 . Lempster is currently growing at a rate of 0.69% annually and its population has increased by 4.67% since the most recent census, which recorded a population of 1,114 in 2020.
The average household income in Lempster is $98,731 with a poverty rate of 6.3%. The median age in Lempster is 49.4 years: 51.6 years for males, and 44.1 years for females. For every 100 females there are 103.1 males.
Data after 2023 is projected based on recent change
The racial composition of Lempster includes 96.2% White, and smaller percentages for and multiracial populations.
White (96.2%)
Two or more races (3.8%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 885 | 96.2% |
| Two or more races | 35 | 3.8% |
Married
Widowed
Divorced
Separated
Never Married
Lempster's average per capita income is $47,500. Household income levels show a median of $85,227. The poverty rate stands at 6.3%.
Name | Median | Mean |
|---|---|---|
| Families | $88,571 | $99,507 |
| Married Families | $86,932 | - |
| Households | $85,227 | $98,731 |
| Non Families | $60,714 | $76,713 |
Average Income
Median Household Income
Poverty Rate