Seabrook, SC demographics:
population, income, and more

Total population
799
-16.7% year-over-year change
Median household income
$63,149/yr
0.3% year-over-year change
Housing units
524
6.1% year-over-year change

Seabrook population

How many people live in Seabrook

Seabrook is home to 799 residents, according to the most recent Census data. Gender-wise, 44.6% of Seabrook locals are male, and 55.4% are female.

Total population
799
-16.7% year-over-year change
Gender ratio
Male
44.6%
356
Female
55.4%
443
Value Percent YoY change
Male 356 44.6% 24.5%
Female 443 55.4% -34.2%
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 Seabrook is 54, with the population distributed as follows: about 3.5% are children under 15, then 23.6% are in the 15 to 24 age group. Adults between 25 and 44 make up 11.3% of the population, while another 37.9% fall into the 45 to 64 bracket. Finally, around 23.6% are 65 or older.

Median age
54
Age breakdown
Under 15
3.5%
15 to 24
23.6%
25 to 44
11.3%
45 to 64
37.9%
Over 65
23.6%
Value Percent YoY change
Under 15 28 3.5% -61.1%
15 to 24 189 23.6% 9.2%
25 to 44 90 11.3% -37.5%
45 to 64 303 37.9% -15.8%
Over 65 189 23.6% -10.0%
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 Seabrook, 95.7% of the population are US-born citizens, while 4.3% have gained naturalized citizenship. There’s also a share of 5.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
95.7%
Non-U.S.-born citizens
4.3%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 765 95.7% -19.2%
Non-U.S.-born citizens 34 4.3% 183.3%
Racial breakdown
White
49.8%
Black or African American
44.8%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.4%
Other
0%
Value Percent
White 398 49.8%
Black or African American 358 44.8%
Two or more races 43 5.4%

Households in Seabrook

A peek inside Seabrook households

Seabrook has 405 households, with an average of 2 members in each. Of these, 44.7% are families, while the remaining 55.3% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
405
2.3% year-over-year change
Average people per household
2
Non-family households
224
Family households
181
Value Percent YoY change
Non-family households 224 55.3% -4.3%
Family households 181 44.7% 11.7%
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 Seabrook

The housing landscape of Seabrook

Seabrook's housing consists of 524 units, with 52.5% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 1.5% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 46% of the housing landscape.

Housing units
524
6.1% year-over-year change
Housing types
Value Percent
1 unit, detached 275 52.5%
1 unit, attached 8 1.5%
Mobile home 241 46%
Homes built since 2020
0
% year-over-year change

The age of buildings in Seabrook

In Seabrook, the median construction year is 1996. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built between 1960 and 1969 58 11.1% 52.6%
Built between 1970 and 1979 146 27.9% 35.2%
Built between 1980 and 1989 14 2.7% -86.8%
Built between 1990 and 1999 70 13.4% 42.9%
Built between 2000 and 2009 97 18.5% 54.0%
Built between 2010 and 2019 139 26.5% 6.9%
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.

Seabrook occupancy rates

Out of the 405 occupied housing units in Seabrook, 80.5% are owner-occupied, while 19.5% are lived in by tenants. Meanwhile, 22.7% of all homes on the local market sit vacant.

Occupied housing units
405
2.3% year-over-year change
Occupancy breakdown
Renter occupied
79
Owner occupied
326
Value Percent YoY
change
Renter occupied 79 19.5% 102.6%
Owner occupied 326 80.5% -8.7%
Unoccupied housing units
22.7%
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.

Education in Seabrook

Seabrook education at a glance

About 50.1% of the population in Seabrook went to high school, while 36.6% pursued college studies. Meanwhile, 8.6% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
High school diploma 360 50.1% -29.8%
College diploma 263 36.6% 57.5%
Associate degree 33 4.6% 73.7%
Graduate degree 62 8.6% -38.6%
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 Seabrook

How much people earn in Seabrook

The average annual household income in Seabrook was $87,964 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +15.7% change from the previous year. At the same time, the median income stood at $63,149, reflecting a +0.3% shift over the same period.

Average household income in Seabrook
$87,964/year
15.7% year-over-year change
Median household income in Seabrook
$63,149/year
0.3% year-over-year change

Seabrook income by age

Overall, 78.7% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Above poverty level
629
Below poverty level
170
Value Percent YoY
change
Above poverty level 629 78.7% -16.5%
Below poverty level 170 21.3% -1.7%

Employment in Seabrook

Workforce and job types in Seabrook

The job market in Seabrook is powered by 373 working residents, spread across a range of industries and roles. 53.9% of the working population are employed in professional or administrative positions, while 46.1% are in hands-on or service-based jobs. Also, 9.4% run their own businesses, 40.5% are employed by private companies, and 48% work in the public sector.

Workforce demographics

Working population
373
9.4% year-over-year change
White collar
201
Blue collar
172
Value Percent YoY change
White collar 201 53.9% -15.9%
Blue collar 172 46.1% 68.6%
Employer type
Self employees
9.4%
Private companies
40.5%
Governmental workers
48%
Not for profit companies
2.1%
Value Percent YoY change
Self employees 35 9.4% -40.7%
Private companies 151 40.5% 17.1%
Governmental workers 179 48% 17.0%
Not for profit companies 8 2.1% N/A

Transportation in Seabrook

How people get around in Seabrook

Means of transportation
Value Percent YoY change
Car 379 100% 9.9%
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 Seabrook by zipcode?

Zipcode Population Number of households Median income Average income
29940 3,256 1,502 $54,177 $70,011

Explore more communities

FAQs about Seabrook demographics 

What is the total population of Seabrook?

Seabrook has a total population of 799 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 -16.7% compared to a year ago.

What is the gender ratio in Seabrook?

The gender ratio in Seabrook is as follows:
  • 44.6% males (356 residents)
  • 55.4% females (443 residents)

What is the median age in Seabrook?

The median age in Seabrook is 54.

What is the age distribution of the population in Seabrook?

The age distribution in Seabrook is as follows:
  • Under 15: 3.5% (28 residents)
  • Ages 15-24: 23.6% (189 residents)
  • Ages 25-44: 11.3% (90 residents)
  • Ages 45-64: 37.9% (303 residents)
  • Over 65: 23.6% (189 residents)

What is the racial and ethnic makeup of Seabrook?

The racial and ethnic makeup of Seabrook is as follows:
  • White: 49.8% (398 residents)
  • Black or African American: 44.8% (358 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: 5.4% (43 residents)
  • Other: 0% (0 residents)

What percentage of the population in Seabrook are U.S.-born citizens?

U.S.-born citizens represent 95.7% of the population in Seabrook.

How many housing units are there in Seabrook?

There are 524 housing units in Seabrook, reflecting a +6.1% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Seabrook and what is the average household size?

Seabrook has a total of 405 households, with an average of 2 people in each.

What is the median household income in Seabrook?

Seabrook has a median household income of $63,149, representing a +0.3% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Seabrook?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 53.9% (201 residents)
  • Blue-collar workers: 46.1% (172 residents)

Places of employment:
  • Self-employed: 9.4% (35 residents)
  • Private companies: 40.5% (151 residents)
  • Governmental workers: 48% (179 residents)
  • Not-for-profit companies: 2.1% (8 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