Monmouth Junction is a city located in Mercer County, Middlesex County, and Somerset County New Jersey. Monmouth Junction has a 2024 population of 9,794. Monmouth Junction is currently growing at a rate of 0.23% annually and its population has increased by 9.91% since the most recent census, which recorded a population of 8,911 in 2020.
The average household income in Monmouth Junction is $163,307 with a poverty rate of 6.42%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Monmouth Junction is 38.6 years, 40.6 years for males, and 36.7 years for females.
According to the most recent ACS, the racial composition of Monmouth Junction was:
Asian
White
Two or more races
Black or African American
Other race
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 3,633 | 2.68 | 63.6 | 36.4 |
| Married | 2,321 | 3.25 | 73.9 | 26.1 |
| Non Family | 942 | 1.25 | 51.2 | 48.8 |
| Female | 294 | 2.62 | 37.8 | 62.2 |
| Male | 76 | 3.54 | 0 | 100 |
3.16
Average Family Size
2.68
Average Household Size
63.6%
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 other race people with a rate of 100%.
The highest rate of bachelors degrees is among asian people with a rate of 89.55%.
All
Male
Female
$85,074
Average Earnings
$100,516
Average Male
$56,922
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
46.87% of Monmouth Junction residents speak only English, while 53.13% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 28.25% of the population.
rate
6.42%
Overall Poverty Rate
3.96%
Male Poverty Rate
8.58%
Female Poverty Rate
The race most likely to be in poverty in Monmouth Junction is Multiple, with 56.27% below the poverty level.
The race least likely to be in poverty in Monmouth Junction is Black, with 2.15% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0%. Among those working part-time, it was 12.55%, and for those that did not work, the poverty rate was 16.11%.
Married
Widowed
Divorced
Separated
NeverMarried
61.2%
Overall Marriage Rate
68.3%
Male Marriage Rate
55.0%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 45-54, 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
10.81%
Veteran Poverty Rate
7.03%
Veteran Disability Rate
LaborForceParticipation
74.7%
Labor Force Participation
72.5%
Employment Rate
2.9%
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
34.19%
Born in Monmouth Junction
53.26%
Native Born
46.74%
Foreign Born
20.33%
Non Citizen
26.41%
Naturalized
53.26% of Monmouth Junction residents were born in the United States, with 34.19% having been born in New Jersey. 20.33% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2024 | 9,794 | 22 | 0.23% |
| 2023 | 9,772 | 22 | 0.23% |
| 2022 | 9,750 | 22 | 0.23% |
| 2021 | 9,728 | 817 | 9.17% |
| 2020 | 8,911 | 6,005 | 206.64% |
| 2019 | 2,906 | -396 | -11.99% |
| 2018 | 3,302 | -232 | -6.56% |
| 2017 | 3,534 | 335 | 10.47% |
| 2016 | 3,199 | -68 | -2.08% |
| 2015 | 3,267 | 294 | 9.89% |
| 2014 | 2,973 | -58 | -1.91% |
| 2013 | 3,031 | 128 | 4.41% |
| 2012 | 2,903 | 179 | 6.57% |
| 2011 | 2,724 | -163 | -5.65% |
| 2010 | 2,887 | 0 | 0% |