Marmora vs Sea Isle City

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

Marmora and Sea Isle City 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 2,011 in Marmora). Sea Isle City has the higher median household income ($98,860 vs $94,621 in Marmora). Sea Isle City has the higher median home value ($1,019,500 vs $370,400 in Marmora).

Population, income & housing

	Marmora	Sea Isle City
Population	2,011	2,079
Median age	58.2 yrs	65.2 yrs
Median household income	$94,621	$98,860
Median home value	$370,400	$1,019,500
Median gross rent	$1,917	—
Housing units	1,381	6,719
Homeownership rate	87.1%	93.8%
Bachelor's degree or higher	43.6%	47.5%
Unemployment rate	2.4%	3.5%

Trends (ACS 5-year, 2019–2023)

	Marmora	Sea Isle City
Population	2,519 → 2,011 (-20.2%)	2,147 → 2,079 (-3.2%)
Median household income	$95,250 → $94,621 (-0.7%)	$73,403 → $98,860 (+34.7%)
Median home value	$289,100 → $370,400 (+28.1%)	$671,700 → $1,019,500 (+51.8%)
Median gross rent	$1,454 → $1,917 (+31.8%)	$1,444 → $1,210 (-16.2%)

Marmora

Population

2,5192,011

Median household income

$95,250$94,621

Median home value

$289,100$370,400

Median gross rent

$1,454$1,917

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

Age & race/ethnicity

Age distribution (share)

	Marmora	Sea Isle City
Under 5	2.4%	1.4%
5 to 17	13.3%	4.9%
18 to 24	4.6%	2.8%
25 to 34	7.5%	3.0%
35 to 44	8.9%	4.2%
45 to 54	10.9%	12.9%
55 to 64	12.7%	20.2%
65 to 74	21.5%	27.4%
75 and over	18.2%	23.2%

Race & ethnicity (share)

	Marmora	Sea Isle City
White (non-Hispanic)	92.3%	96.7%
Black or African American	0.3%	0.1%
American Indian & Alaska Native	0.0%	0.0%
Asian	2.3%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	5.0%	1.2%
Hispanic or Latino	0.0%	1.9%

Educational attainment (age 25+)

Share of adults 25+

	Marmora	Sea Isle City
No high school diploma	1.4%	1.3%
High school graduate	27.1%	23.3%
Some college or associate's	27.9%	27.9%
Bachelor's degree	20.2%	25.9%
Graduate or professional degree	23.4%	21.6%

Commute to work

How workers get to work (share)

	Marmora	Sea Isle City
Drove alone	87.4%	74.0%
Carpooled	5.7%	2.9%
Public transit	0.0%	1.3%
Walked	3.8%	3.4%
Bicycle	0.0%	0.7%
Worked from home	3.2%	17.7%
Other means	0.0%	0.0%

Housing

Units in structure (share)

	Marmora	Sea Isle City
1-unit, detached	65.0%	14.2%
1-unit, attached	0.0%	58.5%
2 to 4 units	4.6%	13.9%
5 to 19 units	0.0%	7.9%
20 or more units	0.0%	5.5%
Mobile home & other	30.4%	0.0%

Poverty & households

	Marmora	Sea Isle City
Poverty rate	4.3%	4.7%
Average household size	2.05	1.84
Mean commute (minutes)	25	30
Median year structure built	1983	1991