Mackay Flag

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 489. Mackay is currently growing at a rate of 1.88% annually and its population has increased by 10.63% since the most recent census, which recorded a population of 442 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.

489
Total Population
565
Density (mi²)
9 1.88%
Growth

Mackay Population

Mackay Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Mackay includes 89.15% White, and smaller percentages for Native American and multiracial populations.

Population by Race

White (89.1%)

Two or more races (10.7%)

Native American (0.1%)

Race
Population
Percentage (of total)
White64189.15%
Two or more races7710.71%
Native American10.14%

Mackay Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)