Markham is a CDP located in Grays Harbor County, Washington. Markham has a 2025 population of 137 . Markham is currently growing at a rate of 0.74% annually and its population has increased by 73.42% since the most recent census, which recorded a population of 79 in 2020.
The average household income in Markham is $102,704 with a poverty rate of 0%. The median age in Markham is 66 years: 73 years for males, and 62.5 years for females. For every 100 females there are 73.0 males.
Data after 2023 is projected based on recent change
The racial composition of Markham includes 71.1% White, and smaller percentages for and multiracial populations.
White (71.1%)
Two or more races (28.9%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 123 | 71.1% |
| Two or more races | 50 | 28.9% |
Married
Widowed
Divorced
Separated
Never Married
Markham's average per capita income is $26,571. Household income levels show a median of $88,487. The poverty rate stands at 0%.
Name | Median | Mean |
|---|---|---|
| Households | $88,487 | $102,704 |
| Married Families | $88,355 | - |
| Families | - | $123,773 |
| Non Families | - | - |
Average Income
Median Household Income
Poverty Rate