Monmouth demographics profile

Population density (sq mi)4,5724091
Median age23.439.137.7
Male/Female ratio1.1:11.0:11.0:1
Married (15yrs & older)37%55%55%
Speak English81%85%79%
Speak Spanish12%9%13%
Monmouth, OR has a population of 9,919 and is the 3,956th largest city in the United States. The population density is 4,572 per sq mi which is 11446% higher than the Oregon average and 4947% higher than the national average. The median age in Monmouth is 23 which is approximately 40% lower than the Oregon average of 39. In Monmouth, 37% of the population over 15 years of age are married, 81% speak English and 12% speak Spanish. 53% of Monmouth residents were born in Oregon, 36% were born out of state, 0% were born outside of the United States and 11% were foreign born.

Did you know?

  • The population density in Monmouth is 11446% higher than Oregon.
  • The median age in Monmouth is 40% lower than Oregon.
  • In Monmouth 82.45% of the population is Caucasian.
  • In Monmouth 1.89% of the population is African American.
  • In Monmouth 2.95% of the population is Asian.

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Monmouth population breakdown by race

African American1.89%1.86%12.63%
American Indian0.94%1.14%0.82%
Native Hawaiian0.42%0.38%0.18%
Mixed race6.72%4.41%3.06%
Other race4.63%3.13%4.75%
In Monmouth, 14.1% 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, OR demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).