Sea Isle City, NJ Profile: Facts, Map & Data


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Sea Isle City, New Jersey - Basic Facts

The City of Sea Isle City had a population of 2,322 as of July 1, 2017. Sea Isle City ranks in the lower quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in New Jersey. See peer rankings below.

The primary coordinate point for Sea Isle City is located at latitude 39.1538 and longitude -74.6964 in Cape May County. The formal boundaries for the City of Sea Isle City (see map below) encompass a land area of 2.17 sq. miles and a water area of 0.36 sq. miles. Cape May County is in the Eastern time zone (GMT -5). The elevation is 7 feet.

The City of Sea Isle City (GNIS ID: 885389) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with Sea Isle City population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Sea Isle City: Ludlam's Beach, Strathmere.

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City of Sea Isle City, NJ Boundary Map

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Sea Isle City, NJ Data & Demographics (As of July 1, 2017)


Total Population 2,322
Daytime Population: Workers 1,959
Daytime Population: Residents 1,001
Total Daytime Population (TDP) 2,960
Ratio TDP/Total Population1 1.27
Population in Households 2,322
Population in Familes 1,799
Population in Group Qrtrs 0
Population Density2 1,071
Diversity Index3 10


Median Household Income $65,157
Average Household Income $98,452
Per Capita Income $48,378


Total Housing Units 7,894 (100%)
Owner Occupied HU 888 (11.2%)
Renter Occupied HU 253 ( 3.2%)
Vacant Housing Units 6,753 (85.5%)
Median Home Value $756,839
Average Home Value $729,167


Total Households 1,141
Average Household Size 2.04
Family Households 706
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 1.3% 0.32%
Households 1.27% 0.26%
Families 1.23% 0.25%
Median Household Income   1.67%
Per Capita Income   2.02%

Sea Isle City, NJ - Peer Comparisons by Rank and Percentile

The table below compares Sea Isle City to the other 545 incorporated cities, towns and CDPs in New Jersey by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 381 30th
Population Density # 422 23rd
Diversity Index # 527 3rd
Median Household Income # 361 34th
Per Capita Income # 145 74th

Additional comparisons and rankings can be made with a VERY EASY TO USE New Jersey Census Data Comparison Tool.

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