Middlesex County, NJ demographics:
population, income, and more

Total population
871,290
1.1% year-over-year change
Median household income
$111,549/yr
2.3% year-over-year change
Housing units
317,979
0.4% year-over-year change

Middlesex County population

How many people live in Middlesex County

Middlesex County is home to 871,290 residents, according to the most recent Census data. Gender-wise, 49.7% of Middlesex County locals are male, and 50.3% are female.

Total population
871,290
1.1% year-over-year change
Gender ratio
Male
49.7%
432,893
Female
50.3%
438,397
Value Percent YoY change
Male 432,893 49.7% 1.2%
Female 438,397 50.3% 1.1%
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 Middlesex County is 40, with the population distributed as follows: about 17.6% are children under 15, then 13.4% are in the 15 to 24 age group. Adults between 25 and 44 make up 26.9% of the population, while another 26.1% fall into the 45 to 64 bracket. Finally, around 16.1% are 65 or older.

Median age
39.5
Age breakdown
Under 15
17.6%
15 to 24
13.4%
25 to 44
26.9%
45 to 64
26.1%
Over 65
16.1%
Value Percent YoY change
Under 15 152,954 17.6% 0.1%
15 to 24 116,431 13.4% 1.6%
25 to 44 234,098 26.9% 1.5%
45 to 64 227,249 26.1% -0.2%
Over 65 140,558 16.1% 3.4%
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 Middlesex County, 62.4% of the population are US-born citizens, while 22.4% have gained naturalized citizenship. At the same time, 15.2% of residents are non-citizens. As for race, 41% of locals are Caucasian, 10.4% are African American and 25.5% have Asian roots. There’s also a share of 10.2% that includes residents with two or more races.

Citizenship
U.S.-born citizens
62.4%
Non-U.S.-born citizens
22.4%
Non-citizens
15.2%
Value Percent YoY change
U.S.-born citizens 543,595 62.4% 0.1%
Non-U.S.-born citizens 194,833 22.4% 1.3%
Non-citizens 132,862 15.2% 5.5%
Racial breakdown
White
41%
Black or African American
10.4%
American Indian and Alaska Native
1%
Asian
25.5%
Native Hawaiian and other Pacific Islander
0%
Two or more races
10.2%
Other
11.8%
Value Percent
White 356,769 41%
Black or African American 90,902 10.4%
American Indian and Alaska Native 9,028 1%
Asian 222,566 25.5%
Native Hawaiian and other Pacific Islander 275 0%
Two or more races 88,655 10.2%
Other 103,095 11.8%

Households in Middlesex County

A peek inside Middlesex County households

Middlesex County has 307,782 households, with an average of 3 members in each. Of these, 71.5% are families, while the remaining 28.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
307,782
0.7% year-over-year change
Average people per household
3
Non-family households
87,846
Family households
219,936
Value Percent YoY change
Non-family households 87,846 28.5% 2.2%
Family households 219,936 71.5% 0.1%
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 Middlesex County

The housing landscape of Middlesex County

Middlesex County's housing consists of 317,979 units, with 52.4% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 11.1% 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 0.8% of the housing landscape.

Housing units
317,979
0.4% year-over-year change
Housing types
Value Percent
1 unit, detached 166,485 52.4%
1 unit, attached 35,162 11.1%
2 units 20,870 6.6%
3 or 4 units 16,424 5.2%
5 to 9 units 19,049 6%
10 to 19 units 25,980 8.2%
20 to 49 units 13,213 4.2%
50 or more units 18,099 5.7%
Mobile home 2,667 0.8%
Boat, RV, van, etc. 30 0%
Homes built since 2020
2,978
70.8% year-over-year change

The age of buildings in Middlesex County

In Middlesex County, the median construction year is 1974. About 10.4% of homes were built before the 1940s, with another 5.2% going up by 1949. Most development happened in the second half of the 20th century. Then, 9% of homes were added from 2000 to 2009, 6.6% between 2010 and 2019, and 0.9% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 33,134 10.4% -1.6%
Built between 1940 and 1949 16,545 5.2% -4.4%
Built between 1950 and 1959 48,433 15.2% -0.8%
Built between 1960 and 1969 47,292 14.9% 0.5%
Built between 1970 and 1979 37,169 11.7% 0.3%
Built between 1980 and 1989 50,910 16% -0.4%
Built between 1990 and 1999 31,795 10% -1.2%
Built between 2000 and 2009 28,634 9% 3.9%
Built between 2010 and 2019 21,089 6.6% 4.9%
Built in 2020 or later 2,978 0.9% 70.8%
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.

Middlesex County occupancy rates

Out of the 307,782 occupied housing units in Middlesex County, 63.6% are owner-occupied, while 36.4% are lived in by tenants. Meanwhile, 3.2% of all homes on the local market sit vacant.

Occupied housing units
307,782
0.7% year-over-year change
Occupancy breakdown
Renter occupied
111,894
Owner occupied
195,888
Value Percent YoY
change
Renter occupied 111,894 36.4% 0.2%
Owner occupied 195,888 63.6% 1.0%
Unoccupied housing units
3.2%
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.

Middlesex County housing costs

Housing costs in Middlesex County come to a median of $2,020 per month, while tenants specifically pay a median gross rent of $1,871.

Median housing costs per month
$2,020/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 Middlesex County
$1,871/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 Middlesex County

Middlesex County education at a glance

About 29.1% of the population in Middlesex County went to high school, while 17.2% pursued college studies. Another 6.6% earned an associate degree and 25% hold a bachelor’s. Meanwhile, 17.3% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 34,046 5% 5.3%
High school diploma 198,999 29.1% 0.3%
College diploma 117,339 17.2% -1.2%
Associate degree 44,794 6.6% 2.8%
Bachelor's degree 170,789 25% 1.6%
Graduate degree 118,243 17.3% 3.8%
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 Middlesex County

How much people earn in Middlesex County

The average annual household income in Middlesex County was $142,003 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.7% change from the previous year. At the same time, the median income stood at $111,549, reflecting a +2.3% shift over the same period.

Average household income in Middlesex County
$142,003/year
2.7% year-over-year change
Median household income in Middlesex County
$111,549/year
2.3% year-over-year change

Middlesex County income by age

In Middlesex County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $121,102. Those with someone between 45 and 64 in charge, often well established professionally, earn $137,944 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $51,301, while those led by someone over 65, many of whom may be retired, have about $72,915 in earnings. Overall, 91.4% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $51,301 -0.7%
25 - 44 $121,102 1.9%
45 - 64 $137,944 3.8%
Over 65 $72,915 2.5%
Above poverty level
765,994
Below poverty level
71,789
Value Percent YoY
change
Above poverty level 765,994 91.4% 1.0%
Below poverty level 71,789 8.6% 2.3%

Employment in Middlesex County

Workforce and job types in Middlesex County

The job market in Middlesex County is powered by 443,187 working residents, spread across a range of industries and roles. 81.2% of the working population are employed in professional or administrative positions, while 18.8% are in hands-on or service-based jobs. Also, 7.6% run their own businesses, 71.1% are employed by private companies, and 13.6% work in the public sector.

Workforce demographics

Working population
443,187
1.6% year-over-year change
White collar
359,680
Blue collar
83,507
Value Percent YoY change
White collar 359,680 81.2% 1.9%
Blue collar 83,507 18.8% 0.1%
Employer type
Self employees
7.6%
Private companies
71.1%
Governmental workers
13.6%
Not for profit companies
7.7%
Value Percent YoY change
Self employees 33,863 7.6% 0.8%
Private companies 315,230 71.1% 2.2%
Governmental workers 60,080 13.6% -0.2%
Not for profit companies 34,014 7.7% 0.1%
Unemployment rate
6.7%
6.4% year-over-year change

Available workforce

The unemployment rate in Middlesex County stands at 6.7%, 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 Middlesex County

How people get around in Middlesex County

In Middlesex County, the average commute time is 31 minutes. Commuting methods vary: 69.4% of residents travel by personal vehicle and 2.9% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
31 min
-2.2% year-over-year change
Means of transportation
Value Percent YoY change
Car 299,274 69.4% -1.2%
Taxicab 5,526 1.3% 23.5%
Bus or trolleybus 9,731 2.3% -3.7%
Subway or elevated 2,788 0.6% N/A
Railroad 11,647 2.7% -11.7%
Ferryboat 52 0% -49.0%
Motorcycle 102 0% 264.3%
Bicycle 1,205 0.3% 2.0%
Walk 12,454 2.9% 4.1%
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 Middlesex County by zipcode?

Zipcode Population Number of households Median income Average income
07001 17,121 5,615 $101,670 $125,172
07721 4,277 1,603 $123,060 $134,479
07008 25,526 8,230 $97,021 $121,147
07095 20,756 7,921 $104,926 $122,083
07735 19,159 8,191 $97,536 $117,258
07747 32,330 13,097 $124,383 $153,822
07064 3,481 1,101 $133,854 $143,283
07067 18,587 6,262 $122,713 $153,720
07077 3,248 1,291 $108,948 $134,393
07080 24,411 8,324 $130,205 $148,749

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FAQs about Middlesex County demographics 

What is the total population of Middlesex County?

Middlesex County has a total population of 871,290 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 +1.1% compared to a year ago.

What is the gender ratio in Middlesex County?

The gender ratio in Middlesex County is as follows:
  • 49.7% males (432,893 residents)
  • 50.3% females (438,397 residents)

What is the median age in Middlesex County?

The median age in Middlesex County is 39.5.

What is the age distribution of the population in Middlesex County?

The age distribution in Middlesex County is as follows:
  • Under 15: 17.6% (152,954 residents)
  • Ages 15-24: 13.4% (116,431 residents)
  • Ages 25-44: 26.9% (234,098 residents)
  • Ages 45-64: 26.1% (227,249 residents)
  • Over 65: 16.1% (140,558 residents)

What is the racial and ethnic makeup of Middlesex County?

The racial and ethnic makeup of Middlesex County is as follows:
  • White: 41% (356,769 residents)
  • Black or African American: 10.4% (90,902 residents)
  • American Indian and Alaska Native: 1% (9,028 residents)
  • Asian: 25.5% (222,566 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (275 residents)
  • Two or More Races: 10.2% (88,655 residents)
  • Other: 11.8% (103,095 residents)

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

U.S.-born citizens represent 62.4% of the population in Middlesex County.

How many housing units are there in Middlesex County?

There are 317,979 housing units in Middlesex County, reflecting a +0.4% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Middlesex County has a total of 307,782 households, with an average of 3 people in each.

What is the median household income in Middlesex County?

Middlesex County has a median household income of $111,549, representing a +2.3% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Middlesex County?

The employment rate is 93.3% in Middlesex County, with a workforce of 443,187 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 81.2% (359,680 residents)
  • Blue-collar workers: 18.8% (83,507 residents)

Places of employment:
  • Self-employed: 7.6% (33,863 residents)
  • Private companies: 71.1% (315,230 residents)
  • Governmental workers: 13.6% (60,080 residents)
  • Not-for-profit companies: 7.7% (34,014 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