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 962. It is also the county seat of .Arco is currently growing at a rate of 1.69% annually and its population has increased by 9.07% since the most recent census, which recorded a population of 882 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.

Demographics

The racial composition of Arco includes 86.58% White, and smaller percentages for other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	729	86.58%
Two or more races	105	12.47%
Other race	8	0.95%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Arco Marital Status

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