Monmouth demographics profile

Population density (sq mi)3015591
Median age36.838.037.7
Male/Female ratio0.7:11.0:11.0:1
Married (15yrs & older)59%60%55%
Families w/ Kids under 1840%44%43%
Speak English99%92%79%
Speak Spanish0%4%13%
Monmouth, IA has a population of 169 and is the 25,166th largest city in the United States. The population density is 301 per sq mi which is 450% higher than the Iowa average and 232% higher than the national average. The median age in Monmouth is 37 which is approximately 3% lower than the Iowa average of 38. In Monmouth, 59% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 93% of Monmouth residents were born in Iowa, 6% were born out of state, 0% were born outside of the United States and 1% were foreign born.
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Did you know?

  • The population density in Monmouth is 450% higher than Iowa.
  • The median age in Monmouth is 3% lower than Iowa.
  • In Monmouth 98.22% of the population is White.
  • In Monmouth 0.00% of the population is Black or African American.
  • In Monmouth 1.18% of the population is Asian.

Compare Monmouth, IA Demographics To Other Cities

Monmouth population breakdown by race

Black or African American0.00%3.32%12.63%
American Indian0.00%0.32%0.82%
Native Hawaiian0.00%0.08%0.18%
Mixed race0.59%1.97%3.06%
Other race0.00%1.27%4.75%
In Monmouth, 0.0% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Monmouth age breakdown

Marital status

Age of children in married couples

Source: The Monmouth, IA demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).
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