Monmouth, OR demographics:
population, income, and more

Total population
11,428
2.2% year-over-year change
Median household income
$69,170/yr
3.5% year-over-year change
Housing units
3,969
5.3% year-over-year change

Monmouth population

How many people live in Monmouth

Monmouth is home to 11,428 residents, according to the most recent Census data. Gender-wise, 48.1% of Monmouth locals are male, and 51.9% are female.

Total population
11,428
2.2% year-over-year change
Gender ratio
Male
48.1%
5,496
Female
51.9%
5,932
Value Percent YoY change
Male 5,496 48.1% 1.1%
Female 5,932 51.9% 3.4%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Monmouth is 27, with the population distributed as follows: about 16.9% are children under 15, then 28.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 24.6% of the population, while another 17.9% fall into the 45 to 64 bracket. Finally, around 11.8% are 65 or older.

Median age
27.1
Age breakdown
Under 15
16.9%
15 to 24
28.8%
25 to 44
24.6%
45 to 64
17.9%
Over 65
11.8%
Value Percent YoY change
Under 15 1,928 16.9% 2.5%
15 to 24 3,287 28.8% -1.2%
25 to 44 2,813 24.6% 8.1%
45 to 64 2,047 17.9% 0.3%
Over 65 1,353 11.8% 2.0%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Monmouth, 92.8% of the population are US-born citizens, while 4% have gained naturalized citizenship. At the same time, 3.2% of residents are non-citizens. As for race, 75.3% of locals are Caucasian, 1.9% are African American and 1.8% have Asian roots. Another 1.5% are Indigenous American, 0.8% are Pacific Islanders, while 5% identify as another race. There’s also a share of 13.7% that includes residents with two or more races.

Citizenship
U.S.-born citizens
92.8%
Non-U.S.-born citizens
4%
Non-citizens
3.2%
Value Percent YoY change
U.S.-born citizens 10,606 92.8% 1.4%
Non-U.S.-born citizens 454 4% 19.8%
Non-citizens 368 3.2% 9.8%
Racial breakdown
White
75.3%
Black or African American
1.9%
American Indian and Alaska Native
1.5%
Asian
1.8%
Native Hawaiian and other Pacific Islander
0.8%
Two or more races
13.7%
Other
5%
Value Percent
White 8,602 75.3%
Black or African American 213 1.9%
American Indian and Alaska Native 170 1.5%
Asian 210 1.8%
Native Hawaiian and other Pacific Islander 91 0.8%
Two or more races 1,568 13.7%
Other 574 5%

Households in Monmouth

A peek inside Monmouth households

Monmouth has 3,621 households, with an average of 3 members in each. Of these, 63% are families, while the remaining 37% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
3,621
6.7% year-over-year change
Average people per household
3
Non-family households
1,341
Family households
2,280
Value Percent YoY change
Non-family households 1,341 37% 16.0%
Family households 2,280 63% 1.8%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Monmouth

The housing landscape of Monmouth

Monmouth's housing consists of 3,969 units, with 54.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 6.5% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 3.8% of the housing landscape.

Housing units
3,969
5.3% year-over-year change
Housing types
Value Percent
1 unit, detached 2,153 54.2%
1 unit, attached 259 6.5%
2 units 198 5%
3 or 4 units 205 5.2%
5 to 9 units 384 9.7%
10 to 19 units 363 9.2%
20 to 49 units 168 4.2%
50 or more units 90 2.3%
Mobile home 149 3.8%
Homes built since 2020
9
% year-over-year change

The age of buildings in Monmouth

In Monmouth, the median construction year is 1993. About 3.4% of homes were built before the 1940s, with another 1.6% going up by 1949. Most development happened in the second half of the 20th century. Then, 21.7% of homes were added from 2000 to 2009, 16.5% between 2010 and 2019, and 0.2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 137 3.4% 9.6%
Built between 1940 and 1949 62 1.6% -28.7%
Built between 1950 and 1959 130 3.3% 16.1%
Built between 1960 and 1969 548 13.8% -0.5%
Built between 1970 and 1979 665 16.8% -6.6%
Built between 1980 and 1989 207 5.2% -0.5%
Built between 1990 and 1999 695 17.5% 9.3%
Built between 2000 and 2009 861 21.7% 9.7%
Built between 2010 and 2019 655 16.5% 18.4%
Built in 2020 or later 9 0.2% N/A
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Monmouth occupancy rates

Out of the 3,621 occupied housing units in Monmouth, 47.4% are owner-occupied, while 52.6% are lived in by tenants. Meanwhile, 8.8% of all homes on the local market sit vacant.

Occupied housing units
3,621
6.7% year-over-year change
Occupancy breakdown
Renter occupied
1,906
Owner occupied
1,715
Value Percent YoY
change
Renter occupied 1,906 52.6% 3.0%
Owner occupied 1,715 47.4% 11.0%
Unoccupied housing units
8.8%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Monmouth housing costs

Housing costs in Monmouth come to a median of $1,217 per month, while tenants specifically pay a median gross rent of $1,114.

Median housing costs per month
$1,217/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Monmouth
$1,114/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Monmouth

Monmouth education at a glance

About 26.6% of the population in Monmouth went to high school, while 32.7% pursued college studies. Another 13.8% earned an associate degree and 17.2% hold a bachelor’s. Meanwhile, 7.7% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 188 2.1% 102.2%
High school diploma 2,427 26.6% -9.0%
College diploma 2,987 32.7% 2.9%
Associate degree 1,259 13.8% 13.7%
Bachelor's degree 1,573 17.2% 10.6%
Graduate degree 705 7.7% 6.3%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Monmouth

How much people earn in Monmouth

The average annual household income in Monmouth was $86,999 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.9% change from the previous year. At the same time, the median income stood at $69,170, reflecting a +3.5% shift over the same period.

Average household income in Monmouth
$86,999/year
2.9% year-over-year change
Median household income in Monmouth
$69,170/year
3.5% year-over-year change

Monmouth income by age

In Monmouth, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $79,267. Those with someone between 45 and 64 in charge, often well established professionally, earn $92,118 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $32,900, while those led by someone over 65, many of whom may be retired, have about $63,173 in earnings. Overall, 83.5% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $32,900 21.1%
25 - 44 $79,267 4.5%
45 - 64 $92,118 3.0%
Over 65 $63,173 5.9%
Above poverty level
8,150
Below poverty level
1,614
Value Percent YoY
change
Above poverty level 8,150 83.5% -0.1%
Below poverty level 1,614 16.5% 5.0%

Average renter income in Monmouth

To get a better sense of what renters earn on average in Monmouth, their median household income was $38,064 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 35.1%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$38,064
Rent-to-income ratio
35.1%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Monmouth

Workforce and job types in Monmouth

The job market in Monmouth is powered by 5,779 working residents, spread across a range of industries and roles. 80.6% of the working population are employed in professional or administrative positions, while 19.4% are in hands-on or service-based jobs. Also, 4.6% run their own businesses, 59.8% are employed by private companies, and 25.4% work in the public sector.

Workforce demographics

Working population
5,779
6.4% year-over-year change
White collar
4,658
Blue collar
1,121
Value Percent YoY change
White collar 4,658 80.6% 5.7%
Blue collar 1,121 19.4% 9.2%
Employer type
Self employees
4.6%
Private companies
59.8%
Governmental workers
25.4%
Not for profit companies
10.2%
Value Percent YoY change
Self employees 267 4.6% 19.7%
Private companies 3,457 59.8% 2.8%
Governmental workers 1,466 25.4% 5.2%
Not for profit companies 589 10.2% 30.6%
Unemployment rate
7.1%
14.2% year-over-year change

Available workforce

The unemployment rate in Monmouth stands at 7.1%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Monmouth

How people get around in Monmouth

In Monmouth, the average commute time is 24 minutes. Commuting methods vary: 77.6% of residents travel by personal vehicle and 7.7% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
24 min
0.0% year-over-year change
Means of transportation
Value Percent YoY change
Car 4,292 77.6% 4.4%
Bus or trolleybus 67 1.2% 26.4%
Motorcycle 27 0.5% 0.0%
Bicycle 81 1.5% 0.0%
Walk 428 7.7% 14.8%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Monmouth by zipcode?

Zipcode Population Number of households Median income Average income
97361 14,488 4,758 $69,505 $90,124

Find your place

Explore more communities

FAQs about Monmouth demographics 

What is the total population of Monmouth?

Monmouth has a total population of 11,428 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +2.2% compared to a year ago.

What is the gender ratio in Monmouth?

The gender ratio in Monmouth is as follows:
  • 48.1% males (5,496 residents)
  • 51.9% females (5,932 residents)

What is the median age in Monmouth?

The median age in Monmouth is 27.1.

What is the age distribution of the population in Monmouth?

The age distribution in Monmouth is as follows:
  • Under 15: 16.9% (1,928 residents)
  • Ages 15-24: 28.8% (3,287 residents)
  • Ages 25-44: 24.6% (2,813 residents)
  • Ages 45-64: 17.9% (2,047 residents)
  • Over 65: 11.8% (1,353 residents)

What is the racial and ethnic makeup of Monmouth?

The racial and ethnic makeup of Monmouth is as follows:
  • White: 75.3% (8,602 residents)
  • Black or African American: 1.9% (213 residents)
  • American Indian and Alaska Native: 1.5% (170 residents)
  • Asian: 1.8% (210 residents)
  • Native Hawaiian and Other Pacific Islander: 0.8% (91 residents)
  • Two or More Races: 13.7% (1,568 residents)
  • Other: 5% (574 residents)

What percentage of the population in Monmouth are U.S.-born citizens?

U.S.-born citizens represent 92.8% of the population in Monmouth.

How many housing units are there in Monmouth?

There are 3,969 housing units in Monmouth, reflecting a +5.3% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Monmouth and what is the average household size?

Monmouth has a total of 3,621 households, with an average of 3 people in each.

What is the median household income in Monmouth?

Monmouth has a median household income of $69,170, representing a +3.5% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Monmouth?

The employment rate is 92.9% in Monmouth, with a workforce of 5,779 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 80.6% (4,658 residents)
  • Blue-collar workers: 19.4% (1,121 residents)

Places of employment:
  • Self-employed: 4.6% (267 residents)
  • Private companies: 59.8% (3,457 residents)
  • Governmental workers: 25.4% (1,466 residents)
  • Not-for-profit companies: 10.2% (589 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025