Sea Isle City, NJ demographics:
population, income, and more

Total population
2,000
-3.8% year-over-year change
Median household income
$108,359/yr
9.6% year-over-year change
Housing units
6,719
0.0% year-over-year change

Sea Isle City population

How many people live in Sea Isle City

Sea Isle City is home to 2,000 residents, according to the most recent Census data. Gender-wise, 49.2% of Sea Isle City locals are male, and 50.8% are female.

Total population
2,000
-3.8% year-over-year change
Gender ratio
Male
49.2%
983
Female
50.8%
1,017
Value Percent YoY change
Male 983 49.2% -5.5%
Female 1,017 50.8% -2.1%
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 Sea Isle City is 66, with the population distributed as follows: about 4.7% are children under 15, then 1.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 7.4% of the population, while another 33.4% fall into the 45 to 64 bracket. Finally, around 52.6% are 65 or older.

Median age
66.1
Age breakdown
Under 15
4.7%
15 to 24
1.8%
25 to 44
7.4%
45 to 64
33.4%
Over 65
52.6%
Value Percent YoY change
Under 15 94 4.7% -16.1%
15 to 24 35 1.8% -54.5%
25 to 44 149 7.4% 0.0%
45 to 64 669 33.4% -2.9%
Over 65 1,053 52.6% 0.1%
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 Sea Isle City, 97.2% of the population are US-born citizens, while 2.2% have gained naturalized citizenship. At the same time, 0.6% of residents are non-citizens. There’s also a share of 3.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
97.2%
Non-U.S.-born citizens
2.2%
Non-citizens
0.6%
Value Percent YoY change
U.S.-born citizens 1,945 97.2% -4.0%
Non-U.S.-born citizens 43 2.2% 0.0%
Non-citizens 12 0.6% 20.0%
Racial breakdown
White
96.4%
Black or African American
0.1%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
3.4%
Other
0%
Value Percent
White 1,929 96.4%
Black or African American 2 0.1%
Two or more races 69 3.4%

Households in Sea Isle City

A peek inside Sea Isle City households

Sea Isle City has 1,117 households, with an average of 2 members in each. Of these, 64.2% are families, while the remaining 35.8% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
1,117
-0.7% year-over-year change
Average people per household
2
Non-family households
400
Family households
717
Value Percent YoY change
Non-family households 400 35.8% 1.3%
Family households 717 64.2% -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 Sea Isle City

The housing landscape of Sea Isle City

Sea Isle City's housing consists of 6,719 units, with 14.9% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 57.7% and offer a more compact, shared living style.

Housing units
6,719
0.0% year-over-year change
Housing types
Value Percent
1 unit, detached 1,002 14.9%
1 unit, attached 3,875 57.7%
2 units 744 11.1%
3 or 4 units 101 1.5%
5 to 9 units 372 5.5%
10 to 19 units 229 3.4%
20 to 49 units 275 4.1%
50 or more units 121 1.8%
Homes built since 2020
117
138.8% year-over-year change

The age of buildings in Sea Isle City

In Sea Isle City, the median construction year is 1992. About 3.2% of homes were built before the 1940s, with another 1% going up by 1949. Most development happened in the second half of the 20th century. Then, 25.4% of homes were added from 2000 to 2009, 12.7% between 2010 and 2019, and 1.7% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 218 3.2% -2.7%
Built between 1940 and 1949 65 1% -35.0%
Built between 1950 and 1959 181 2.7% 5.8%
Built between 1960 and 1969 238 3.5% -9.8%
Built between 1970 and 1979 815 12.1% 5.7%
Built between 1980 and 1989 1,672 24.9% -1.9%
Built between 1990 and 1999 853 12.7% -0.2%
Built between 2000 and 2009 1,706 25.4% -5.3%
Built between 2010 and 2019 854 12.7% 9.6%
Built in 2020 or later 117 1.7% 138.8%
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.

Sea Isle City occupancy rates

Out of the 1,117 occupied housing units in Sea Isle City, 92.8% are owner-occupied, while 7.2% are lived in by tenants. Meanwhile, 83.4% of all homes on the local market sit vacant.

Occupied housing units
1,117
-0.7% year-over-year change
Occupancy breakdown
Renter occupied
81
Owner occupied
1,036
Value Percent YoY
change
Renter occupied 81 7.2% 15.7%
Owner occupied 1,036 92.8% -1.8%
Unoccupied housing units
83.4%
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.

Sea Isle City housing costs

Median housing costs per month
$2,187/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.

Education in Sea Isle City

Sea Isle City education at a glance

About 23.2% of the population in Sea Isle City went to high school, while 21.9% pursued college studies. Another 6.3% earned an associate degree and 27.2% hold a bachelor’s. Meanwhile, 21.4% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 1 0% -50.0%
High school diploma 436 23.2% -11.2%
College diploma 410 21.9% -1.9%
Associate degree 118 6.3% -13.9%
Bachelor's degree 510 27.2% 4.3%
Graduate degree 401 21.4% -2.4%
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 Sea Isle City

How much people earn in Sea Isle City

The average annual household income in Sea Isle City was $164,172 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.3% change from the previous year. At the same time, the median income stood at $108,359, reflecting a +9.6% shift over the same period.

Average household income in Sea Isle City
$164,172/year
2.3% year-over-year change
Median household income in Sea Isle City
$108,359/year
9.6% year-over-year change

Sea Isle City income by age

In Sea Isle City, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $90,167. Those with someone between 45 and 64 in charge, often well established professionally, earn $134,063 overall. Overall, 94.6% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $90,167 2.5%
45 - 64 $134,063 9.8%
Over 65 $92,000 7.6%
Above poverty level
1,886
Below poverty level
108
Value Percent YoY
change
Above poverty level 1,886 94.6% -4.8%
Below poverty level 108 5.4% 10.2%

Employment in Sea Isle City

Workforce and job types in Sea Isle City

The job market in Sea Isle City is powered by 680 working residents, spread across a range of industries and roles. 93.2% of the working population are employed in professional or administrative positions, while 6.8% are in hands-on or service-based jobs. Also, 11.5% run their own businesses, 61.6% are employed by private companies, and 16% work in the public sector.

Workforce demographics

Working population
680
-8.8% year-over-year change
White collar
634
Blue collar
46
Value Percent YoY change
White collar 634 93.2% -3.6%
Blue collar 46 6.8% -47.7%
Employer type
Self employees
11.5%
Private companies
61.6%
Governmental workers
16%
Not for profit companies
10.9%
Value Percent YoY change
Self employees 78 11.5% 6.8%
Private companies 419 61.6% -5.0%
Governmental workers 109 16% -29.7%
Not for profit companies 74 10.9% -3.9%
Unemployment rate
7.1%
92.6% year-over-year change

Available workforce

The unemployment rate in Sea Isle City 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 Sea Isle City

How people get around in Sea Isle City

Commuting methods vary: 74.7% of residents travel by personal vehicle and 2.1% 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 508 74.7% -11.5%
Bus or trolleybus 1 0.2% 0.0%
Walk 14 2.1% -44.0%
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 Sea Isle City by zipcode?

Zipcode Population Number of households Median income Average income
08243 2,000 1,117 $108,359 $164,172

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FAQs about Sea Isle City demographics 

What is the total population of Sea Isle City?

Sea Isle City has a total population of 2,000 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 -3.8% compared to a year ago.

What is the gender ratio in Sea Isle City?

The gender ratio in Sea Isle City is as follows:
  • 49.2% males (983 residents)
  • 50.8% females (1,017 residents)

What is the median age in Sea Isle City?

The median age in Sea Isle City is 66.1.

What is the age distribution of the population in Sea Isle City?

The age distribution in Sea Isle City is as follows:
  • Under 15: 4.7% (94 residents)
  • Ages 15-24: 1.8% (35 residents)
  • Ages 25-44: 7.4% (149 residents)
  • Ages 45-64: 33.4% (669 residents)
  • Over 65: 52.6% (1,053 residents)

What is the racial and ethnic makeup of Sea Isle City?

The racial and ethnic makeup of Sea Isle City is as follows:
  • White: 96.4% (1,929 residents)
  • Black or African American: 0.1% (2 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 3.4% (69 residents)
  • Other: 0% (0 residents)

What percentage of the population in Sea Isle City are U.S.-born citizens?

U.S.-born citizens represent 97.2% of the population in Sea Isle City.

How many housing units are there in Sea Isle City?

There are 6,719 housing units in Sea Isle City, reflecting a 0.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Sea Isle City and what is the average household size?

Sea Isle City has a total of 1,117 households, with an average of 2 people in each.

What is the median household income in Sea Isle City?

Sea Isle City has a median household income of $108,359, representing a +9.6% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Sea Isle City?

The employment rate is 92.9% in Sea Isle City, with a workforce of 680 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 93.2% (634 residents)
  • Blue-collar workers: 6.8% (46 residents)

Places of employment:
  • Self-employed: 11.5% (78 residents)
  • Private companies: 61.6% (419 residents)
  • Governmental workers: 16% (109 residents)
  • Not-for-profit companies: 10.9% (74 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