COUNTY
Sussex County
Delaware · 277,140 residents (2025 est.) · 936.146 sq mi
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Part of the Seaford micropolitan area
The short version
Sussex County has roughly average household income, with a median household income of $81,497. The county has grown rapidly, with population up 63% since 2000. Median home value has more than tripled since 2000, reaching $382,600. With a median age of 51.9, the population is older than the US median of 38.9. It ranks in the top 5% of US counties for household income.
At a glance
Average income
near the US median
US median: $82,259
Older
median age 51.9
US median: 38.9
Average education
33% hold a bachelor's degree
US average: 36%
Less affordable
home values up 111%, inflation adjusted
US median home: $376,019
Section 01
Population & growth
PEP 2025 EST:277,140 residents (Census Bureau Vintage 2025, released March 2026)
Population, 1990 – 2024
2024256K
Age distribution, 2024
Under 54.7%(12,138)
5 to 95%(12,667)
10 to 145.2%(13,259)
15 to 194.9%(12,441)
20 to 244.5%(11,413)
25 to 349.5%(24,345)
35 to 449.6%(24,659)
45 to 5410%(25,684)
55 to 6416.3%(41,771)
65 to 7419%(48,601)
75 to 848.9%(22,717)
85 and over2.3%(5,931)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$81,497
+14%inflation adjusted, since 2000
from $39,208 in 2000
US average: $82,259
1990 – 2024
Households earning $100K+
54.1%
+24.7 ptssince 2009
from 29.4% in 2009
US average: 53.3%
Workforce by industry, 2024
Information11.5%
Wholesale trade10.1%
Retail trade8.6%
Other services6.1%
Finance & insurance5.1%
Professional, scientific, technical4.3%
Public administration3.8%
Agriculture, forestry, fishing1.9%
Transportation & warehousing1.8%
Construction1.7%
Arts, entertainment, food1.1%
Education & health services0.8%
Manufacturing0.1%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03
Housing
$382,600
+111%inflation adjusted, since 2000
from $99,700 in 2000
US average: $376,019
1990 – 2024
4.7
+1%since 2009
from 4.7 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
65
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Sussex County on RentDataNow
Section 04
Race & ethnicity
2000
White, non-Hispanic78.5%(122,888)
Black14.7%(23,017)
Hispanic / Latino4.4%(6,915)
Asian0.7%(1,150)
Other0%
2024
White, non-Hispanic72.3%(184,909)
Black9.8%(25,014)
Hispanic / Latino11.5%(29,438)
Asian1.3%(3,242)
Other5.1%(13,023)
56
+20%since 2009
from 47 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
35
−6%since 2020
from 37 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry
Hispanic origin
Central American5.1%(12,937)
Guatemalan3.9%(9,918)
Mexican3.2%(8,180)
Puerto Rican1.6%(3,975)
Honduran0.6%(1,563)
Salvadoran0.5%(1,260)
South American0.5%(1,206)
Dominican0.3%(859)
Cuban0.2%(498)
Colombian0.1%(297)
Chilean0.1%(283)
Peruvian0.1%(247)
+ 10 more hispanic origin groups with data
Ecuadorian0.1%(171)
Spaniard0.1%(171)
Costa Rican0%(121)
Venezuelan0%(86)
Paraguayan0%(47)
Nicaraguan0%(46)
Panamanian0%(29)
Bolivian0%(27)
Uruguayan0%(17)
Argentine0%(16)
Asian origin
Filipino0.3%(757)
Asian Indian0.3%(655)
Chinese0.2%(408)
Vietnamese0.2%(392)
Pakistani0.1%(274)
Korean0.1%(213)
Taiwanese0.1%(144)
Laotian0%(64)
Japanese0%(55)
Indonesian0%(45)
Thai0%(28)
Uzbek0%(16)
+ 4 more asian origin groups with data
Ancestry
Irish16.8%(42,841)
German14.8%(37,753)
English14.1%(35,959)
Italian8.3%(21,329)
American6.8%(17,264)
Polish3.7%(9,339)
Scottish2.2%(5,560)
French1.4%(3,593)
West Indian1.1%(2,777)
Dutch1%(2,649)
Welsh0.9%(2,251)
Russian0.8%(2,136)
+ 48 more ancestry groups with data
Haitian0.7%(1,871)
Scotch-Irish0.7%(1,751)
Hungarian0.6%(1,447)
Swedish0.6%(1,433)
Norwegian0.5%(1,296)
Ukrainian0.5%(1,282)
British0.5%(1,269)
Subsaharan African0.4%(1,102)
Portuguese0.4%(1,086)
French Canadian0.4%(992)
Greek0.3%(871)
Lithuanian0.3%(868)
Arab0.3%(723)
Slovak0.3%(701)
Jamaican0.3%(656)
Swiss0.3%(652)
Romanian0.2%(607)
Canadian0.2%(493)
Czech0.2%(423)
Austrian0.2%(414)
Turkish0.2%(402)
Danish0.1%(269)
Egyptian0.1%(235)
Armenian0.1%(215)
Belgian0.1%(214)
Palestinian0.1%(168)
Brazilian0.1%(168)
Lebanese0.1%(136)
Latvian0%(121)
Croatian0%(115)
Finnish0%(99)
Trinidadian & Tobagonian0%(99)
Ethiopian0%(94)
Bulgarian0%(82)
Slovene0%(67)
Israeli0%(56)
Guyanese0%(44)
Iranian0%(38)
Serbian0%(37)
Syrian0%(34)
Australian0%(29)
Cape Verdean0%(27)
Kenyan0%(27)
Nigerian0%(20)
Macedonian0%(19)
Moroccan0%(17)
Jordanian0%(7)
Iraqi0%(5)
Section 05
Education
High school or higher
90.2%
+13.7 ptssince 2000
from 76.5% in 2000
US average: 89.6%
Section 06
Commute & transportation
Section 07
Work & employment
Section 08
People & community
Marital status
Men 15+
Never married27.7%(28,929)
Married59.7%(62,474)
Widowed3.3%(3,416)
Divorced9.3%(9,775)
Women 15+
Never married23.4%(26,428)
Married52.8%(59,683)
Widowed11%(12,458)
Divorced12.7%(14,399)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
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Compare Sussex County to nearby counties
SUSSEX COUNTY VS
Wicomico County
Income$76,210−6%
Home value$254,700−33%
Population106,899−61%
SEE FULL COMPARISON →
SUSSEX COUNTY VS
Caroline County
Income$68,457−16%
Home value$290,100−24%
Population34,116−88%
SEE FULL COMPARISON →
SUSSEX COUNTY VS
Kent County
Income$74,477−9%
Home value$316,600−17%
Population194,786−30%
SEE FULL COMPARISON →
SUSSEX COUNTY VS
Worcester County
Income$81,745same
Home value$374,700−2%
Population54,459−80%
SEE FULL COMPARISON →
Frequently asked
How many people live in Sussex County, Delaware?
Sussex County, Delaware has about 255,626 residents according to the 2024 American Community Survey.
What is the median household income in Sussex County, Delaware?
The typical household in Sussex County, Delaware earns about $81,497 a year. Half of households make more than that, and half make less.
Is Sussex County, Delaware expensive?
In Sussex County, Delaware, the median home is worth about $382,600, and the typical rent is about $1,238 a month.
How educated are people in Sussex County, Delaware?
About 33.0% of adults age 25 and over in Sussex County, Delaware hold a bachelor's degree or higher.
What is the poverty rate in Sussex County, Delaware?
About 10.9% of people in Sussex County, Delaware live below the federal poverty line.
Has Sussex County, Delaware grown since 1990?
Yes, Sussex County, Delaware has grown since 1990. The population has added about 142,397 residents, a change of about 126 percent over that period.
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75 census tracts (top 20 by population)
Census Tract 517.02Census Tract 504.07Census Tract 518.01Census Tract 505.03Census Tract 506.01Census Tract 513.02Census Tract 503.02Census Tract 501.05Census Tract 501.04Census Tract 504.05Census Tract 501.03Census Tract 504.06Census Tract 506.04Census Tract 507.01Census Tract 519Census Tract 510.13Census Tract 501.01Census Tract 508.08Census Tract 508.06Census Tract 510.0822 ZIP codes
ZIP 19966ZIP 19958ZIP 19973ZIP 19963ZIP 19947ZIP 19956ZIP 19968ZIP 19971ZIP 19975ZIP 19933ZIP 19945ZIP 19970ZIP 19950ZIP 19940ZIP 19939ZIP 19960ZIP 19941ZIP 19930ZIP 19967ZIP 19951ZIP 19944ZIP 19931Up the hierarchy
All counties in DelawareDATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024