Cornish is located in Sullivan County, New Hampshire. Cornish has a 2025 population of 1,646 . Cornish is currently declining at a rate of -0.12% annually but its population has increased by 1.86% since the most recent census, which recorded a population of 1,616 in 2020.
The average household income in Cornish is $104,473 with a poverty rate of 5.4%. The median age in Cornish is 57.4 years: 56.2 years for males, and 58.3 years for females. For every 100 females there are 95.9 males.
Data after 2023 is projected based on recent change
The racial composition of Cornish includes 90.18% White, 6.72% other race, and smaller percentages for Two or more races, Asian and multiracial populations.
White (90.18%)
Other race (6.72%)
Two or more races (2.32%)
Asian (0.79%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,597 | 90.18% |
| Other race | 119 | 6.72% |
| Two or more races | 41 | 2.32% |
| Asian | 14 | 0.79% |
Married
Widowed
Divorced
Separated
Never Married
Cornish's average per capita income is $61,310. Household income levels show a median of $89,046. The poverty rate stands at 5.4%.
Name | Median | Mean |
|---|---|---|
| Married Families | $117,083 | - |
| Families | $113,750 | $135,085 |
| Households | $89,046 | $104,473 |
| Non Families | $67,813 | $66,283 |
Average Income
Median Household Income
Poverty Rate