Marengo Flag

Marengo

County:
Iowa County
County Seat:
Yes
Area (mi²):
2.115
State:
Iowa

Marengo is a city located in Iowa County, Iowa. Marengo has a 2026 population of 2,421. It is also the county seat of Iowa County. Marengo is currently declining at a rate of -0.16% annually and its population has decreased by -0.66% since the most recent census, which recorded a population of 2,437 in 2020.

The median household income in Marengo is $57,941 with a poverty rate of 13.24%. The median age in Marengo is 39.6 years: 36.8 years for males, and 42.1 years for females. For every 100 females there are 96.2 males.

2.4K
Total Population
1,145
Density (mi²)
-4 -0.16%
Growth

Marengo Population

Marengo Population

Year ↓
Population
Growth
Annual Change
20262,421-4-0.16%
20252,42540.17%
20242,421130.54%
20232,408-14-0.58%
20222,422-10-0.41%
20212,432-5-0.21%
20202,43700%
20192,46530.12%
20182,462-2-0.08%
20172,464-13-0.52%
20162,477-14-0.56%
20152,491-16-0.64%
20142,50720.08%
20132,50570.28%
20122,498-29-1.15%
20112,527-1-0.04%
20102,531-6-0.24%
20002,53500%

Median Age

Overall: 39.6 years
Female: 42.1 years
Male: 36.8 years

Marengo Adults

There are 2,098 adults, (577 of whom are seniors) in Marengo.

Sex Ratio

Female: 1,389 (51%)
Male: 1,336 (49%)

Demographics

The racial composition of Marengo includes 94.9% White, and smaller percentages for Black or African American, other race, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White2,58694.9%
Two or more races863.16%
Black or African American311.14%
Other race120.44%
Native American100.37%
Race
Population ↓
Percentage (of total)
Two or more races80.29%
Race
Population ↓
Percentage (of total)
White2,58694.9%
Two or more races782.86%
Black or African American311.14%
Other race120.44%
Native American100.37%

Marengo Marital Status

Economics and Income Statistics

Marengo's average per capita income is $39,405. Household income levels show a median of $57,941. The poverty rate stands at 13.24%.

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$78,750-
Families$70,368$74,861
Households$57,941$66,477
Non Families$40,795$49,902

$39,405

Average Income

$57,941

Median Household Income

13.24%

Poverty Rate

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)