Marengo is a city located in Benton County and Iowa County Iowa. Marengo has a 2024 population of 2,392. It is also the county seat of Iowa County. Marengo is currently declining at a rate of -0.5% annually and its population has decreased by -1.89% since the most recent census, which recorded a population of 2,438 in 2020.
The average household income in Marengo is $68,776 with a poverty rate of 11.08%. The median age in Marengo is 39.3 years: 39.2 years for males, and 39.4 years for females.
According to the most recent ACS, the racial composition of Marengo was:
White
Two or more races
Other race
Black or African American
Native American
Asian
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 1,144 | 2.38 | 71.3 | 28.7 |
| Non Family | 480 | 1.2 | 59.6 | 40.4 |
| Married | 472 | 3.17 | 85.6 | 14.4 |
| Female | 138 | 3.11 | 52.2 | 47.8 |
| Male | 54 | 4.06 | 100 | 0 |
3.13
Average Family Size
2.38
Average Household Size
71.3%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among native american people with a rate of 100%.
The highest rate of bachelors degrees is among white people with a rate of 11.74%.
All
Male
Female
$41,989
Average Earnings
$51,094
Average Male
$33,833
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
95.92% of Marengo residents speak only English, while 4.08% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.9% of the population.
rate
11.08%
Overall Poverty Rate
11.06%
Male Poverty Rate
11.1%
Female Poverty Rate
The race most likely to be in poverty in Marengo is Black, with 100% below the poverty level.
The race least likely to be in poverty in Marengo is Multiple, with 6.67% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.46%. Among those working part-time, it was 10.03%, and for those that did not work, the poverty rate was 26.59%.
Married
Widowed
Divorced
Separated
NeverMarried
47.8%
Overall Marriage Rate
49.2%
Male Marriage Rate
46.5%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
14.38%
Veteran Poverty Rate
40.41%
Veteran Disability Rate
LaborForceParticipation
67%
Labor Force Participation
65.1%
Employment Rate
2.8%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
82.89%
Born in Marengo
96.76%
Native Born
3.24%
Foreign Born
2.63%
Non Citizen
0.6%
Naturalized
96.76% of Marengo residents were born in the United States, with 82.89% having been born in Iowa. 2.63% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 2,335 | -12 | -0.51% |
| 2028 | 2,347 | -11 | -0.47% |
| 2027 | 2,358 | -11 | -0.46% |
| 2026 | 2,369 | -12 | -0.5% |
| 2025 | 2,381 | -11 | -0.46% |
| 2024 | 2,392 | -12 | -0.5% |
| 2023 | 2,404 | -16 | -0.66% |
| 2022 | 2,420 | -9 | -0.37% |
| 2021 | 2,429 | -9 | -0.37% |
| 2020 | 2,438 | -27 | -1.1% |
| 2019 | 2,465 | 3 | 0.12% |
| 2018 | 2,462 | -2 | -0.08% |
| 2017 | 2,464 | -13 | -0.52% |
| 2016 | 2,477 | -14 | -0.56% |
| 2015 | 2,491 | -16 | -0.64% |
| 2014 | 2,507 | 2 | 0.08% |
| 2013 | 2,505 | 7 | 0.28% |
| 2012 | 2,498 | -29 | -1.15% |
| 2011 | 2,527 | -4 | -0.16% |
| 2010 | 2,531 | 0 | 0% |
| 2000 | 2,535 | 200 | 8.57% |