Seabrook Beach, NH Profile: Facts & Data


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Seabrook Beach, New Hampshire - Basic Facts

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The Seabrook Beach CDP(1) had a population of 1,033 as of July 1, 2021. Seabrook Beach ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in New Hampshire. See peer rankings below.

The primary coordinate point for Seabrook Beach is located at latitude 42.8868 and longitude -70.8156 in Rockingham County. The formal boundaries for the Seabrook Beach Census Designated Place encompass a land area of 0.96 sq. miles and a water area of 0.43 sq. miles. Rockingham County is in the Eastern time zone (GMT -5). The elevation is 10 feet.

The Seabrook Beach Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Seabrook Beach Census Designated Place is located within Town of Seabrook, a minor civil division (MCD) of Rockingham County.

  1. A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

Jump to... (On This Page!)
  1. Seabrook Beach 2021 Demographic Data
  2. Growth Rates for Seabrook Beach (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. New Hampshire Research Tools (Easy Tools & Current Data)
  3. New Hampshire Data Comparison Tool - 2021 Demographics

Seabrook Beach, NH Data & Demographics (As of July 1, 2021)


Total Population 1,033 (100%)
Population in Households 1,033 (100.0%)
Population in Families 693 (67.1%)
Population in Group Quarters1 0
Population Density 978
Diversity Index2 7


Median Household Income $94,745
Average Household Income $149,310
% of Income for Mortgage4 26%
Per Capita Income $79,327
Wealth Index5 236


Total HU (Housing Units) 1,086 (100%)
Owner Occupied HU 397 (36.6%)
Renter Occupied HU 155 (14.3%)
Vacant Housing Units 534 (49.2%)
Median Home Value $589,423
Average Home Value $664,547
Housing Affordability Index3 94


Total Households 552
Average Household Size 1.87
Family Households 272
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2021 2021-2026
Population 0.36% 0.37%
Households 0.46% 0.4%
Families -0.03% 0.22%
Median Household Income   2.58%
Per Capita Income   2.47%
Owner Occupied HU   0.5%

Seabrook Beach, NH - Peer Comparisons by Rank and Percentile

The table below compares Seabrook Beach to the other 97 incorporated cities, towns and CDPs in New Hampshire by rank and percentile using July 1, 2021 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 # 69 30th
Population Density # 36 64th
Median Household Income # 6 95th
Housing Affordability Index # 9 9th
Per Capita Income # 1 100th
Diversity Index # 94 4th

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

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