Seaford, DE demographics:
population, income, and more

Total population
8,485
2.8% year-over-year change
Median household income
$54,016/yr
5.7% year-over-year change
Housing units
3,908
2.8% year-over-year change

Seaford population

How many people live in Seaford

Seaford is home to 8,485 residents, according to the most recent Census data. Gender-wise, 45.3% of Seaford locals are male, and 54.7% are female.

Total population
8,485
2.8% year-over-year change
Gender ratio
Male
45.3%
3,842
Female
54.7%
4,643
Value Percent YoY change
Male 3,842 45.3% 0.2%
Female 4,643 54.7% 5.0%
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 Seaford is 41, with the population distributed as follows: about 19.4% are children under 15, then 11.7% are in the 15 to 24 age group. Adults between 25 and 44 make up 23.8% of the population, while another 26.5% fall into the 45 to 64 bracket. Finally, around 18.6% are 65 or older.

Median age
41.1
Age breakdown
Under 15
19.4%
15 to 24
11.7%
25 to 44
23.8%
45 to 64
26.5%
Over 65
18.6%
Value Percent YoY change
Under 15 1,648 19.4% -3.6%
15 to 24 991 11.7% -5.8%
25 to 44 2,021 23.8% 8.5%
45 to 64 2,247 26.5% 14.2%
Over 65 1,578 18.6% -5.1%
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 Seaford, 89.8% of the population are US-born citizens, while 5.1% have gained naturalized citizenship. At the same time, 5.1% of residents are non-citizens. As for race, 49.9% of locals are Caucasian, 23.6% are African American and 1.2% have Asian roots. There’s also a share of 16.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
89.8%
Non-U.S.-born citizens
5.1%
Non-citizens
5.1%
Value Percent YoY change
U.S.-born citizens 7,619 89.8% 8.4%
Non-U.S.-born citizens 433 5.1% -19.7%
Non-citizens 433 5.1% -36.8%
Racial breakdown
White
49.9%
Black or African American
23.6%
American Indian and Alaska Native
0%
Asian
1.2%
Native Hawaiian and other Pacific Islander
0%
Two or more races
16.4%
Other
8.8%
Value Percent
White 4,234 49.9%
Black or African American 2,007 23.6%
American Indian and Alaska Native 3 0%
Asian 103 1.2%
Two or more races 1,389 16.4%
Other 749 8.8%

Households in Seaford

A peek inside Seaford households

Seaford has 3,516 households, with an average of 2 members in each. Of these, 68.7% are families, while the remaining 31.3% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
3,516
2.3% year-over-year change
Average people per household
2
Non-family households
1,101
Family households
2,415
Value Percent YoY change
Non-family households 1,101 31.3% 6.7%
Family households 2,415 68.7% 0.4%
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 Seaford

The housing landscape of Seaford

Seaford's housing consists of 3,908 units, with 58% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 7% and offer a more compact, shared living style.

Housing units
3,908
2.8% year-over-year change
Housing types
Value Percent
1 unit, detached 2,268 58%
1 unit, attached 272 7%
2 units 127 3.2%
3 or 4 units 371 9.5%
5 to 9 units 337 8.6%
10 to 19 units 132 3.4%
20 to 49 units 249 6.4%
50 or more units 152 3.9%
Homes built since 2020
32
-21.9% year-over-year change

The age of buildings in Seaford

In Seaford, the median construction year is 1977. About 14.9% of homes were built before the 1940s, with another 5.8% going up by 1949. Most development happened in the second half of the 20th century. Then, 14% of homes were added from 2000 to 2009, 17.9% between 2010 and 2019, and 0.8% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 581 14.9% 12.2%
Built between 1940 and 1949 225 5.8% -9.6%
Built between 1950 and 1959 154 3.9% 22.2%
Built between 1960 and 1969 655 16.8% 4.3%
Built between 1970 and 1979 486 12.4% 21.2%
Built between 1980 and 1989 299 7.6% -34.9%
Built between 1990 and 1999 230 5.9% -3.8%
Built between 2000 and 2009 545 14% -2.5%
Built between 2010 and 2019 701 17.9% 20.4%
Built in 2020 or later 32 0.8% -21.9%
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.

Seaford occupancy rates

Out of the 3,516 occupied housing units in Seaford, 49.5% are owner-occupied, while 50.5% are lived in by tenants. Meanwhile, 10% of all homes on the local market sit vacant.

Occupied housing units
3,516
2.3% year-over-year change
Occupancy breakdown
Renter occupied
1,775
Owner occupied
1,741
Value Percent YoY
change
Renter occupied 1,775 50.5% 2.4%
Owner occupied 1,741 49.5% 2.2%
Unoccupied housing units
10.0%
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.

Seaford housing costs

Housing costs in Seaford come to a median of $1,211 per month, while tenants specifically pay a median gross rent of $1,176.

Median housing costs per month
$1,211/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Seaford
$1,176/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Seaford

Seaford education at a glance

About 47.7% of the population in Seaford went to high school, while 22.1% pursued college studies. Another 8.5% earned an associate degree and 7.3% hold a bachelor’s. Meanwhile, 6.9% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 485 7.4% 9.2%
High school diploma 3,109 47.7% 8.4%
College diploma 1,442 22.1% -7.3%
Associate degree 553 8.5% 22.6%
Bachelor's degree 478 7.3% -14.8%
Graduate degree 448 6.9% 11.4%
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 Seaford

How much people earn in Seaford

The average annual household income in Seaford was $71,635 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +7.4% change from the previous year. At the same time, the median income stood at $54,016, reflecting a +5.7% shift over the same period.

Average household income in Seaford
$71,635/year
7.3% year-over-year change
Median household income in Seaford
$54,016/year
5.7% year-over-year change

Seaford income by age

In Seaford, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $52,163. Those with someone between 45 and 64 in charge, often well established professionally, earn $46,394 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $37,550, while those led by someone over 65, many of whom may be retired, have about $61,601 in earnings. Overall, 81.8% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $37,550 2.1%
25 - 44 $52,163 1.9%
45 - 64 $46,394 11.6%
Over 65 $61,601 3.1%
Above poverty level
6,678
Below poverty level
1,485
Value Percent YoY
change
Above poverty level 6,678 81.8% 3.5%
Below poverty level 1,485 18.2% 9.9%

Average renter income in Seaford

To get a better sense of what renters earn on average in Seaford, their median household income was $36,100 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 39.1%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$36,100
Rent-to-income ratio
39.1%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Seaford

Workforce and job types in Seaford

The job market in Seaford is powered by 3,753 working residents, spread across a range of industries and roles. 63.8% of the working population are employed in professional or administrative positions, while 36.2% are in hands-on or service-based jobs. Also, 8.3% run their own businesses, 67.5% are employed by private companies, and 13.2% work in the public sector.

Workforce demographics

Working population
3,753
10.6% year-over-year change
White collar
2,396
Blue collar
1,357
Value Percent YoY change
White collar 2,396 63.8% 0.8%
Blue collar 1,357 36.2% 33.3%
Employer type
Self employees
8.3%
Private companies
67.5%
Governmental workers
13.2%
Not for profit companies
11%
Value Percent YoY change
Self employees 311 8.3% 5.4%
Private companies 2,534 67.5% 15.3%
Governmental workers 495 13.2% 25.3%
Not for profit companies 413 11% -18.5%
Unemployment rate
13.1%
10.8% year-over-year change

Available workforce

The unemployment rate in Seaford stands at 13.1%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Seaford

How people get around in Seaford

Commuting methods vary: 90% of residents travel by personal vehicle and 1.8% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 3,313 90% 11.6%
Bus or trolleybus 49 1.3% 104.2%
Walk 66 1.8% -30.5%
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 Seaford by zipcode?

Zipcode Population Number of households Median income Average income
19973 26,834 10,266 $64,387 $87,032

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FAQs about Seaford demographics 

What is the total population of Seaford?

Seaford has a total population of 8,485 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 +2.8% compared to a year ago.

What is the gender ratio in Seaford?

The gender ratio in Seaford is as follows:
  • 45.3% males (3,842 residents)
  • 54.7% females (4,643 residents)

What is the median age in Seaford?

The median age in Seaford is 41.1.

What is the age distribution of the population in Seaford?

The age distribution in Seaford is as follows:
  • Under 15: 19.4% (1,648 residents)
  • Ages 15-24: 11.7% (991 residents)
  • Ages 25-44: 23.8% (2,021 residents)
  • Ages 45-64: 26.5% (2,247 residents)
  • Over 65: 18.6% (1,578 residents)

What is the racial and ethnic makeup of Seaford?

The racial and ethnic makeup of Seaford is as follows:
  • White: 49.9% (4,234 residents)
  • Black or African American: 23.6% (2,007 residents)
  • American Indian and Alaska Native: 0% (3 residents)
  • Asian: 1.2% (103 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 16.4% (1,389 residents)
  • Other: 8.8% (749 residents)

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

U.S.-born citizens represent 89.8% of the population in Seaford.

How many housing units are there in Seaford?

There are 3,908 housing units in Seaford, reflecting a +2.8% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Seaford has a total of 3,516 households, with an average of 2 people in each.

What is the median household income in Seaford?

Seaford has a median household income of $54,016, representing a +5.7% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Seaford?

The employment rate is 86.9% in Seaford, with a workforce of 3,753 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 63.8% (2,396 residents)
  • Blue-collar workers: 36.2% (1,357 residents)

Places of employment:
  • Self-employed: 8.3% (311 residents)
  • Private companies: 67.5% (2,534 residents)
  • Governmental workers: 13.2% (495 residents)
  • Not-for-profit companies: 11% (413 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