Arco Flag

Arco

County:
Butte County
County Seat:
Yes
Area (mi²):
1.068
State:
Idaho

Arco is a city located in Butte County, Idaho. Arco has a 2025 population of 919 . It is also the county seat of Butte County . Arco is currently growing at a rate of 0.88% annually and its population has increased by 4.55% since the most recent census, which recorded a population of 879 in 2020.

The average household income in Arco is $67,359 with a poverty rate of 35.86%. The median age in Arco is 37.1 years: 41.6 years for males, and 35.3 years for females. For every 100 females there are 51.2 males.

919
Total Population
860
Density (mi²)
8 0.88%
Growth

Arco Population

Arco Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Arco includes 86.58% White, and smaller percentages for other race and multiracial populations.

Population by Race

White (86.58%)

Two or more races (12.47%)

Other race (0.95%)

Race
Population
Percentage (of total)
White72986.58%
Two or more races10512.47%
Other race80.95%

Arco Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Arco's average per capita income is $29,375. Household income levels show a median of $31,023. The poverty rate stands at 35.86%.

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
Married Families$64,063-
Families$48,250$103,450
Households$31,023$67,359
Non Families$19,508$30,186

$29,375

Average Income

$31,023

Median Household Income

35.86%

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)