Delaware ZIP Codes
Delaware ZIP code list — 75 ZIP codes across 3 counties and 43 cities. Search by city or filter by county.
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About Delaware ZIP codes
Delaware is served by 75 ZIP codes that cover all three of the state's counties — New Castle, Kent, and Sussex — ranging from 19701 in Bear to 19979 in Woodside. As the second-smallest state in the nation, Delaware's ZIP codes all begin with the prefix 19, using the three-digit groupings 197, 198, and 199 to organize mail delivery from the urban corridors of Wilmington and Newark in the north to the beach communities of Rehoboth and Lewes in the south. New Castle County alone accounts for 39 of the state's ZIP codes, reflecting its role as Delaware's population and economic center. Whether you're looking up a ZIP code for Dover, the state capital, or the charming towns along the Delaware coast, this guide provides a complete reference for every ZIP code in the First State.
Delaware ZIP codes use three prefixes: 197, 198, and 199. The 197 prefix primarily covers New Castle County in the northern part of the state, including Wilmington and Newark. The 198 and 199 prefixes extend coverage southward through Kent and Sussex counties, reaching the coastal and agricultural regions of central and southern Delaware.
New Castle County has the most ZIP codes in Delaware with 39, which reflects its status as the state's most populous county, home to Wilmington, Newark, and the densely developed suburbs of the Philadelphia metropolitan area.
Quick facts
- Delaware is one of the smallest states by area, yet its 75 ZIP codes span just three counties — the fewest counties of any U.S. state.
- The very first ZIP code in Delaware, 19701, is assigned to Bear in New Castle County, while the highest, 19979, belongs to Woodside in Kent County.
- When the ZIP code system was introduced in 1963, Delaware's compact size meant it was assigned a single sectional center facility in Wilmington to process all of the state's mail.
Frequently asked questions
What ZIP codes are in Wilmington, Delaware?
Wilmington, the largest city in Delaware, is served by multiple ZIP codes including 19801, 19802, 19803, 19804, 19805, 19806, 19807, 19808, 19809, and 19810. These ZIP codes cover the city proper as well as some adjacent suburban areas in New Castle County.
How many ZIP codes does Delaware have?
Delaware has a total of 75 ZIP codes, spanning from 19701 to 19979. These ZIP codes are distributed across the state's three counties: New Castle, Kent, and Sussex.
What do Delaware ZIP codes start with?
All Delaware ZIP codes begin with the digits 19, using three specific prefixes: 197, 198, and 199. This means every Delaware ZIP code falls within the range of 19701 to 19979, making them easy to identify as belonging to the First State.
Which county in Delaware has the most ZIP codes?
New Castle County leads with 39 ZIP codes, more than half of the state's total. Sussex County follows with 22 ZIP codes, and Kent County has 14. New Castle County's higher count reflects its greater population density and urban development around the Wilmington metro area.
Looking for a downloadable Delaware ZIP code list? Our Gold Edition database includes all 75 DE ZIP codes with city, county, latitude, longitude, timezone, and FIPS codes — available in Excel, CSV, and Access formats.
Last updated April 2026
Demographics & statistics
989,893
Population
41.9
Median age
$81,603
Median household income
$42,191
Per capita income
$318,472
Median home value
$1,154
Median monthly rent
74.8%
Home ownership
9.7%
Poverty rate
4.9%
Unemployment
341,292
Housing units
33.2%
Bachelor's or higher
Age distribution
Male
Female
27,469
Under 5
26,466
28,343
5–9
27,307
30,654
10–14
29,534
31,950
15–19
30,783
30,383
20–24
29,273
64,986
25–34
62,613
59,817
35–44
57,632
60,351
45–54
58,146
34,961
55–59
33,684
36,415
60–64
35,085
59,685
65–74
57,504
29,287
75–84
28,217
9,854
85+
9,494
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 205,870 | 18.9% |
| 18 and over | 784,023 | 81.1% |
| 65 and over | 194,041 | 21.8% |
| Median age | 41.9 years | |
Race & ethnicity
White
59.9%
Black or African American
20.7%
Two or more races
6%
Hispanic or Latino
6%
Asian
3.9%
Other race
3.1%
American Indian / Alaska Native
0.3%
| Group | Count | % |
|---|---|---|
| White | 631,136 | 59.9% |
| Black or African American | 218,101 | 20.7% |
| Two or more races | 63,717 | 6% |
| Hispanic or Latino | 63,291 | 6% |
| Asian | 40,570 | 3.9% |
| Other race | 32,717 | 3.1% |
| American Indian / Alaska Native | 3,287 | 0.3% |
Household income
Under $10k
3.8%
$10k–$15k
2.9%
$15k–$25k
5.2%
$25k–$35k
8.3%
$35k–$50k
10.1%
$50k–$75k
15.9%
$75k–$100k
13.9%
$100k–$150k
17.5%
$150k–$200k
9.2%
$200k+
9.7%
| Range | % of households |
|---|---|
| Under $10k | 3.8% |
| $10k–$15k | 2.9% |
| $15k–$25k | 5.2% |
| $25k–$35k | 8.3% |
| $35k–$50k | 10.1% |
| $50k–$75k | 15.9% |
| $75k–$100k | 13.9% |
| $100k–$150k | 17.5% |
| $150k–$200k | 9.2% |
| $200k+ | 9.7% |
| Median income | $81,603 |
Housing
Home values
Under $50k
4.1%
$50k–$100k
2.8%
$100k–$150k
5.1%
$150k–$200k
9.3%
$200k–$300k
26.0%
$300k–$500k
32.9%
$500k–$1M
12.9%
$1M+
3.4%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $318,472 |
| Median rent / month | $1,154 |
| Owner occupied | 74.8% |
| Renter occupied | 21.7% |
| Vacant | 13.4% |
| Single-family detached | 64.0% |
| Large apartment buildings | 4.0% |
| Mobile homes | 8.3% |
| Median rooms | 6.0 |
| Avg household size (owned) | 2.37 |
Year built
| Era | % |
|---|---|
| 2020 or later | 1.0% |
| 2010–2019 | 11.6% |
| 2000–2009 | 17.9% |
| 1990–1999 | 14.3% |
| 1980–1989 | 11.1% |
| 1970–1979 | 10.6% |
| 1960–1969 | 8.0% |
| 1950–1959 | 7.7% |
| 1940–1949 | 3.6% |
| 1939 or earlier | 10.7% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.2% |
| 1 bedroom | 5.2% |
| 2 bedrooms | 19.1% |
| 3 bedrooms | 45.6% |
| 4 bedrooms | 20.5% |
| 5+ bedrooms | 5.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 5.1% |
| 1 vehicle | 31.9% |
| 2 vehicles | 38.2% |
| 3 or more | 21.3% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 29.7% |
| Electricity | 41.2% |
| Propane / LP gas | 12.0% |
| Fuel oil | 9.9% |
| Wood | 1.4% |
| Solar | 0.2% |
| No fuel used | 0.7% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 183,577 | 48.1% |
| Cohabiting couple | 27,831 | 6.7% |
| Male householder, no spouse | 64,347 | 16.8% |
| Female householder, no spouse | 111,868 | 24.9% |
| Households with children under 18 | 106,446 | 25.3% |
| Households with seniors (65+) | 135,288 | 36.0% |
| Average household size | 2.36 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 34.4% | 29.2% |
| Married | 51.6% | 46.2% |
| Separated | 1.3% | 1.8% |
| Widowed | 2.9% | 9.1% |
| Divorced | 9.8% | 12.0% |
Education
Less than 9th grade
3.2%
Some HS, no diploma
6.0%
HS graduate
28.9%
Some college, no degree
19.8%
Associate's degree
8.9%
Bachelor's degree
20.0%
Graduate / professional
13.2%
| Metric | % |
|---|---|
| HS diploma or higher | 90.8% |
| Bachelor's or higher | 33.2% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 12,828 | 5.2% |
| Kindergarten | 10,657 | 4.6% |
| Elementary school | 90,696 | 41.2% |
| High school | 49,050 | 21.0% |
| College / grad school | 64,412 | 26.3% |
Employment
Industry of employment
Education & healthcare
22.4%
Retail trade
11.4%
Professional & management
10.6%
Arts, food & hospitality
8.7%
Construction
8.6%
Finance & real estate
7.9%
Manufacturing
7.7%
Public administration
6.1%
Transportation & utilities
4.8%
Other services
4.1%
Wholesale trade
1.9%
Agriculture & mining
1.3%
Information
1.0%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 38.5% |
| Service | 17.1% |
| Sales & office | 20.0% |
| Natural resources & construction | 9.7% |
| Production & transportation | 11.1% |
Employment type
| Type | % |
|---|---|
| Private sector | 75.9% |
| Government | 15.3% |
| Self-employed | 4.9% |
| Unpaid family workers | 0.4% |
Commute
| Method | % |
|---|---|
| Drive alone | 73.4% |
| Carpool | 8.3% |
| Public transit | 1.2% |
| Walk | 2.5% |
| Other means | 1.3% |
| Avg commute (minutes) | 25.5 |
Poverty
All people
9.7%
Under 18 years
14.8%
18 and over
8.4%
Married-couple families
3.7%
Female-led households
17.1%
Income support
| Source | % of households |
|---|---|
| Social Security | 37.1% |
| Retirement income | 33.7% |
| Supplemental Security | 4.7% |
| Cash public assistance | 2.2% |
| Food stamps / SNAP | 9.5% |
Health indicators
| Condition | % |
|---|---|
| High blood pressure | 34.1% |
| High cholesterol | 33.1% |
| Heart disease | 6.6% |
| Stroke | 3.1% |
| Asthma | 10.0% |
| Arthritis | 24.0% |
| Kidney disease | 2.9% |
| Pulmonary disease | 7.1% |
| Cancer | 6.8% |
| Behavior / access | % |
|---|---|
| Binge drinking | 14.9% |
| No physical activity | 24.8% |
| Less than 7 hrs sleep | 32.5% |
| Fair or poor health | 13.8% |
| Poor mental health | 13.5% |
| Poor physical health | 10.1% |
| No health insurance | 13.9% |
| Visited doctor (checkup) | 74.7% |
| Visited dentist | 60.0% |
| Cholesterol screening | 88.4% |
| Teeth loss | 12.3% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 62,874 | 8.7% |
| Disability | % |
|---|---|
| Any disability | 13.8% |
| Under 18 | 4.8% |
| 18–64 years | 11.1% |
| 65 and over | 30.2% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 69.7% |
| Public insurance | 40.6% |
| Uninsured under 19 | 5.6% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 935,958 | 95.2% |
| Spanish | 47,405 | 4.1% |
| Other Indo-European | 27,771 | 2.3% |
| Asian & Pacific Islander | 8,976 | 0.9% |
| Other languages | 7,820 | 0.6% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 892,820 | 92.8% |
| Born in same state | 875,300 | 91.2% |
| Born in different state | 433,577 | 43.2% |
| Foreign born | 17,520 | 1.6% |
| Naturalized citizen | 97,073 | 7.2% |
| Not a US citizen | 52,184 | 51.6% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 142,040 | 14.3% |
| French | 100,922 | 10.2% |
| Arab | 48,046 | 4.9% |
| English | 8,305 | 0.8% |
| Polish | 4,437 | 0.4% |
| Ancestry | Count | % |
|---|---|---|
| Irish | 3,904 | 0.4% |
| German | 3,093 | 0.3% |
| Norwegian | 2,753 | 0.3% |
| Dutch | 1,235 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 40.0% |
| Internet access | 90.8% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.