Demographics in Monmouth, IL
Population, age, race, ethnicity, and household statistics — 2023 ACS Data
Where is Monmouth?
Loading map…
Population
Source: U.S. Census Bureau ACS (2023)Total Population
8,794
Male
4,282
48.7%
Female
4,512
51.3%
Median Age
35.0
Age Distribution
Source: U.S. Census Bureau ACS (2023)Race & Ethnicity
Source: U.S. Census Bureau ACS (2023)White75.5%
Black4.7%
Hispanic18.8%
Asian4.0%
Two or More4.7%
Other8.1%
Education & Household
Source: U.S. Census Bureau ACS (2023)Bachelor's or Higher
11.3%
High School or Higher
32.4%
Foreign Born
10.6%
Veterans
3.6%
Married
30.7%
Avg Household Size
2.4
Marital Status by Age
Source: U.S. Census Bureau ACS (2023)Monmouth, IL has a population of 8,794 with a median age of 35.0. The racial makeup is 75.5% White, 18.8% Hispanic, 4.7% Black, 4.0% Asian. About 11.3% of residents hold a bachelor's degree or higher. The foreign-born population is 10.6%.