Mercer is a city located in McLean County, North Dakota. Mercer has a 2025 population of 126 . Mercer is currently declining at a rate of 0% annually and its population has increased by 38.46% since the most recent census, which recorded a population of 91 in 2020.
The median age in Mercer is 54.8 years: 58.4 years for males, and 47.9 years for females. For every 100 females there are 98.0 males.
Data after 2023 is projected based on recent change
The racial composition of Mercer includes 87.63% White, 6.19% Black or African American, and smaller percentages for and multiracial populations.
White (87.63%)
Black or African American (6.19%)
Two or more races (6.19%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 85 | 87.63% |
| Black or African American | 6 | 6.19% |
| Two or more races | 6 | 6.19% |
Married
Widowed
Divorced
Separated
Never Married