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 2026 population of 927. It is also the county seat of Butte County. Arco is currently growing at a rate of 0.87% annually and its population has increased by 5.46% since the most recent census, which recorded a population of 879 in 2020.

The median household income in Arco is $37,644 with a poverty rate of 31.85%. The median age in Arco is 34.6 years: 34.8 years for males, and 34.5 years for females. For every 100 females there are 69.3 males.

927
Total Population
868
Density (mi²)
8 0.87%
Growth

Arco Population

Arco Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202692780.87%
202591980.88%
2024911-11-1.19%
2023922101.1%
202291270.77%
2021905262.96%
202087920.23%
201988691.03%
201887720.23%
201787500%
201687520.23%
2015873-29-3.22%
2014902-3-0.33%
2013905-33-3.52%
2012938-25-2.6%
2011963-32-3.22%
201099060.61%

Median Age

Overall: 34.6 years
Female: 34.5 years
Male: 34.8 years

Arco Adults

There are 560 adults, (157 of whom are seniors) in Arco.

Sex Ratio

Female: 502 (59.1%)
Male: 348 (40.9%)

Demographics

The racial composition of Arco includes 87.65% White, and smaller percentages for other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White74587.65%
Two or more races9911.65%
Other race60.71%
Race
Population ↓
Percentage (of total)
White263.06%
Two or more races252.94%
Other race60.71%
Race
Population ↓
Percentage (of total)
White71984.59%
Two or more races748.71%

Arco Marital Status

Economics and Income Statistics

Arco 's average per capita income is $29,375. Household income levels show a median of $37,644. The poverty rate stands at 31.85%.

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$70,625-
Families$42,083$82,541
Households$37,644$61,174
Non Families$20,417$31,928

$29,375

Average Income

$37,644

Median Household Income

31.85%

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)