Mackay

County:: Custer County
County Seat:: No
Area (mi²):: 0.866
State:: Idaho

Mackay is a city located in Custer County, Idaho. Mackay has a 2025 population of 504. Mackay is currently growing at a rate of 2.44% annually and its population has increased by 13.51% since the most recent census, which recorded a population of 444 in 2020.

The average household income in Mackay is $62,664 with a poverty rate of 17.8%. The median age in Mackay is 61.1 years: 62.1 years for males, and 52.7 years for females.

Demographics

The racial composition of Mackay includes 89.15% White, and smaller percentages for Native American, Black or African American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Native American

Black or African American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	641	89.15%
Two or more races	77	10.71%
Native American	1	0.14%
Black or African American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Mackay Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mackay's average per capita income is $34,650. Household income levels show a median of $41,474. The poverty rate stands at 17.8%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Families	$45,729	$60,192
Married Families	$42,051	-
Households	$41,474	$62,664
Non Families	$33,050	$65,502

$34,650

Average Income

$41,474

Median Household Income

17.8%

Poverty Rate