Sea Isle City vs South Dennis

A side-by-side comparison of Sea Isle City and South Dennis: population, income, housing, and more.

Sea Isle City and South Dennis are places in New Jersey. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Sea Isle City has the higher population (2,079 vs 1,579 in South Dennis). South Dennis has the higher median household income ($137,083 vs $98,860 in Sea Isle City). Sea Isle City has the higher median home value ($1,019,500 vs $352,800 in South Dennis).

Population, income & housing

	Sea Isle City	South Dennis
Population	2,079	1,579
Median age	65.2 yrs	38.8 yrs
Median household income	$98,860	$137,083
Median home value	$1,019,500	$352,800
Housing units	6,719	682
Homeownership rate	93.8%	91.6%
Bachelor's degree or higher	47.5%	43.1%
Unemployment rate	3.5%	0.0%

Trends (ACS 5-year, 2019–2023)

	Sea Isle City	South Dennis
Population	2,147 → 2,079 (-3.2%)	1,603 → 1,579 (-1.5%)
Median household income	$73,403 → $98,860 (+34.7%)	$104,000 → $137,083 (+31.8%)
Median home value	$671,700 → $1,019,500 (+51.8%)	$284,100 → $352,800 (+24.2%)
Median gross rent	$1,444 → $1,210 (-16.2%)	—

Sea Isle City

Population

2,1472,079

Median household income

$73,403$98,860

Median home value

$671,700$1,019,500

Median gross rent

$1,444$1,210

South Dennis

Population

1,6031,579

Median household income

$104,000$137,083

Median home value

$284,100$352,800

Age & race/ethnicity

Age distribution (share)

	Sea Isle City	South Dennis
Under 5	1.4%	9.1%
5 to 17	4.9%	14.5%
18 to 24	2.8%	4.2%
25 to 34	3.0%	8.5%
35 to 44	4.2%	21.5%
45 to 54	12.9%	7.5%
55 to 64	20.2%	13.6%
65 to 74	27.4%	12.7%
75 and over	23.2%	8.5%

Race & ethnicity (share)

	Sea Isle City	South Dennis
White (non-Hispanic)	96.7%	92.9%
Black or African American	0.1%	0.1%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.0%	0.1%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	1.2%	4.6%
Hispanic or Latino	1.9%	2.4%

Educational attainment (age 25+)

Share of adults 25+

	Sea Isle City	South Dennis
No high school diploma	1.3%	6.3%
High school graduate	23.3%	30.1%
Some college or associate's	27.9%	20.4%
Bachelor's degree	25.9%	30.0%
Graduate or professional degree	21.6%	13.1%

Commute to work

How workers get to work (share)

	Sea Isle City	South Dennis
Drove alone	74.0%	85.1%
Carpooled	2.9%	9.8%
Public transit	1.3%	0.2%
Walked	3.4%	0.0%
Bicycle	0.7%	0.0%
Worked from home	17.7%	2.6%
Other means	0.0%	2.2%

Housing

Units in structure (share)

	Sea Isle City	South Dennis
1-unit, detached	14.2%	94.3%
1-unit, attached	58.5%	0.0%
2 to 4 units	13.9%	5.7%
5 to 19 units	7.9%	0.0%
20 or more units	5.5%	0.0%
Mobile home & other	0.0%	0.0%

Poverty & households

	Sea Isle City	South Dennis
Poverty rate	4.7%	2.3%
Average household size	1.84	2.45
Mean commute (minutes)	30	26
Median year structure built	1991	1983