Lake Hopatcong, Jefferson - Roxbury, NJ demographics:
population, income, and more

Total population
4,217
-1.0% year-over-year change
Median household income
$109,007/yr
2.8% year-over-year change
Housing units
1,859
2.1% year-over-year change

Lake Hopatcong population

How many people live in Lake Hopatcong

Lake Hopatcong is home to 4,217 residents, according to the most recent Census data. Gender-wise, 50.5% of Lake Hopatcong locals are male, and 49.5% are female.

Total population
4,217
-1.0% year-over-year change
Gender ratio
Male
50.5%
2,131
Female
49.5%
2,086
Value Percent YoY change
Male 2,131 50.5% 1.2%
Female 2,086 49.5% -3.1%
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 Lake Hopatcong is 45, with the population distributed as follows: about 16.5% are children under 15, then 8.4% are in the 15 to 24 age group. Adults between 25 and 44 make up 25.4% of the population, while another 27.1% fall into the 45 to 64 bracket. Finally, around 22.6% are 65 or older.

Median age
45
Age breakdown
Under 15
16.5%
15 to 24
8.4%
25 to 44
25.4%
45 to 64
27.1%
Over 65
22.6%
Value Percent YoY change
Under 15 696 16.5% 3.1%
15 to 24 353 8.4% -26.0%
25 to 44 1,073 25.4% 14.2%
45 to 64 1,141 27.1% -8.6%
Over 65 954 22.6% 3.8%
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 Lake Hopatcong, 86.1% of the population are US-born citizens, while 11.6% have gained naturalized citizenship. At the same time, 2.4% of residents are non-citizens. As for race, 74.5% of locals are Caucasian, 1.6% are African American and 5.8% have Asian roots. There’s also a share of 13.2% that includes residents with two or more races.

Citizenship
U.S.-born citizens
86.1%
Non-U.S.-born citizens
11.6%
Non-citizens
2.4%
Value Percent YoY change
U.S.-born citizens 3,629 86.1% 0.3%
Non-U.S.-born citizens 488 11.6% -6.2%
Non-citizens 100 2.4% -16.7%
Racial breakdown
White
74.5%
Black or African American
1.6%
American Indian and Alaska Native
0.1%
Asian
5.8%
Native Hawaiian and other Pacific Islander
0%
Two or more races
13.2%
Other
4.7%
Value Percent
White 3,143 74.5%
Black or African American 68 1.6%
American Indian and Alaska Native 5 0.1%
Asian 243 5.8%
Two or more races 558 13.2%
Other 200 4.7%

Households in Lake Hopatcong

A peek inside Lake Hopatcong households

Lake Hopatcong has 1,729 households, with an average of 2 members in each. Of these, 68% are families, while the remaining 32% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
1,729
3.0% year-over-year change
Average people per household
2
Non-family households
553
Family households
1,176
Value Percent YoY change
Non-family households 553 32% 14.5%
Family households 1,176 68% -1.7%
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 Lake Hopatcong

The housing landscape of Lake Hopatcong

Lake Hopatcong's housing consists of 1,859 units, with 83% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 3% 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 2.1% of the housing landscape.

Housing units
1,859
2.1% year-over-year change
Housing types
Value Percent
1 unit, detached 1,543 83%
1 unit, attached 56 3%
2 units 37 2%
3 or 4 units 24 1.3%
5 to 9 units 79 4.2%
10 to 19 units 34 1.8%
20 to 49 units 21 1.1%
50 or more units 27 1.4%
Mobile home 39 2.1%
Homes built since 2020
9
12.5% year-over-year change

The age of buildings in Lake Hopatcong

In Lake Hopatcong, the median construction year is 1965. About 14.4% of homes were built before the 1940s, with another 8.3% going up by 1949. Most development happened in the second half of the 20th century. Then, 10.2% of homes were added from 2000 to 2009, 2.8% between 2010 and 2019, and 0.5% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 268 14.4% 10.7%
Built between 1940 and 1949 154 8.3% 4.8%
Built between 1950 and 1959 351 18.9% 5.7%
Built between 1960 and 1969 338 18.2% 14.2%
Built between 1970 and 1979 160 8.6% -18.4%
Built between 1980 and 1989 176 9.5% 7.3%
Built between 1990 and 1999 160 8.6% 3.2%
Built between 2000 and 2009 189 10.2% -13.3%
Built between 2010 and 2019 53 2.8% -14.5%
Built in 2020 or later 9 0.5% 12.5%
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.

Lake Hopatcong occupancy rates

Out of the 1,729 occupied housing units in Lake Hopatcong, 85.5% are owner-occupied, while 14.5% are lived in by tenants. Meanwhile, 7% of all homes on the local market sit vacant.

Occupied housing units
1,729
3.0% year-over-year change
Occupancy breakdown
Renter occupied
251
Owner occupied
1,478
Value Percent YoY
change
Renter occupied 251 14.5% 13.6%
Owner occupied 1,478 85.5% 1.4%
Unoccupied housing units
7.0%
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.

Lake Hopatcong housing costs

Housing costs in Lake Hopatcong come to a median of $2,042 per month, while tenants specifically pay a median gross rent of $1,766.

Median housing costs per month
$2,042/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 Lake Hopatcong
$1,766/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 Lake Hopatcong

Lake Hopatcong education at a glance

About 27.4% of the population in Lake Hopatcong went to high school, while 19.7% pursued college studies. Another 5.7% earned an associate degree and 30.4% hold a bachelor’s. Meanwhile, 14.2% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 90 2.6% 16.9%
High school diploma 933 27.4% -13.7%
College diploma 670 19.7% 10.2%
Associate degree 195 5.7% -17.0%
Bachelor's degree 1,035 30.4% 7.8%
Graduate degree 485 14.2% 3.0%
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 Lake Hopatcong

How much people earn in Lake Hopatcong

The average annual household income in Lake Hopatcong was $137,422 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -0.5% change from the previous year. At the same time, the median income stood at $109,007, reflecting a +2.8% shift over the same period.

Average household income in Lake Hopatcong
$137,422/year
-0.5% year-over-year change
Median household income in Lake Hopatcong
$109,007/year
2.8% year-over-year change

Lake Hopatcong income by age

In Lake Hopatcong, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $145,214. Those with someone between 45 and 64 in charge, often well established professionally, earn $116,894 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $86,065, while those led by someone over 65, many of whom may be retired, have about $67,277 in earnings. Overall, 95.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $86,065 N/A
25 - 44 $145,214 15.9%
45 - 64 $116,894 -10.3%
Over 65 $67,277 -1.3%
Above poverty level
3,937
Below poverty level
199
Value Percent YoY
change
Above poverty level 3,937 95.2% -0.2%
Below poverty level 199 4.8% -5.2%

Employment in Lake Hopatcong

Workforce and job types in Lake Hopatcong

80.2% of the working population are employed in professional or administrative positions, while 19.8% are in hands-on or service-based jobs. Also, 6.3% run their own businesses, 71.8% are employed by private companies, and 15.6% work in the public sector.

Workforce demographics

White collar
1,845
Blue collar
454
Value Percent YoY change
White collar 1,845 80.2% -2.4%
Blue collar 454 19.8% 7.6%
Employer type
Self employees
6.3%
Private companies
71.8%
Governmental workers
15.6%
Not for profit companies
6.2%
Value Percent YoY change
Self employees 145 6.3% 11.5%
Private companies 1,652 71.8% -0.2%
Governmental workers 360 15.6% 1.1%
Not for profit companies 143 6.2% -16.9%

Transportation in Lake Hopatcong

How people get around in Lake Hopatcong

Commuting methods vary: 96.6% of residents travel by personal vehicle and 0.4% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 1,884 96.6% -2.4%
Taxicab 6 0.3% 20.0%
Bus or trolleybus 25 1.3% -54.5%
Railroad 29 1.5% 38.1%
Walk 7 0.4% 16.7%
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 Lake Hopatcong by zipcode?

Zipcode Population Number of households Median income Average income
07849 8,380 3,427 $117,298 $143,249
07885 11,806 4,886 $100,716 $119,145

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FAQs about Lake Hopatcong demographics 

What is the total population of Lake Hopatcong?

Lake Hopatcong has a total population of 4,217 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 -1.0% compared to a year ago.

What is the gender ratio in Lake Hopatcong?

The gender ratio in Lake Hopatcong is as follows:
  • 50.5% males (2,131 residents)
  • 49.5% females (2,086 residents)

What is the median age in Lake Hopatcong?

The median age in Lake Hopatcong is 45.

What is the age distribution of the population in Lake Hopatcong?

The age distribution in Lake Hopatcong is as follows:
  • Under 15: 16.5% (696 residents)
  • Ages 15-24: 8.4% (353 residents)
  • Ages 25-44: 25.4% (1,073 residents)
  • Ages 45-64: 27.1% (1,141 residents)
  • Over 65: 22.6% (954 residents)

What is the racial and ethnic makeup of Lake Hopatcong?

The racial and ethnic makeup of Lake Hopatcong is as follows:
  • White: 74.5% (3,143 residents)
  • Black or African American: 1.6% (68 residents)
  • American Indian and Alaska Native: 0.1% (5 residents)
  • Asian: 5.8% (243 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 13.2% (558 residents)
  • Other: 4.7% (200 residents)

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

U.S.-born citizens represent 86.1% of the population in Lake Hopatcong.

How many housing units are there in Lake Hopatcong?

There are 1,859 housing units in Lake Hopatcong, reflecting a +2.1% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Lake Hopatcong has a total of 1,729 households, with an average of 2 people in each.

What is the median household income in Lake Hopatcong?

Lake Hopatcong has a median household income of $109,007, representing a +2.8% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Lake Hopatcong?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 80.2% (1,845 residents)
  • Blue-collar workers: 19.8% (454 residents)

Places of employment:
  • Self-employed: 6.3% (145 residents)
  • Private companies: 71.8% (1,652 residents)
  • Governmental workers: 15.6% (360 residents)
  • Not-for-profit companies: 6.2% (143 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