Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/DE/SEAFORD

Seaford ZIP code, Delaware

The ZIP code for Seaford, DE is 19973, and its area code is 302.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
8,485
Area code
302

Mail addressed to Seaford uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Seaford in numbers

About 8,485 people live in Seaford, in 3,516 households, the 13th-largest of Delaware's 79 census places. The median household income is $54,016 a year, 36% below the Delaware median of $84,954 (US: $80,734). The median owner-occupied home is valued at $224,300 (36% below the Delaware median), and median gross rent is $1,176 a month. The median age is 41.1; 15.3% of adults 25 and over hold a bachelor's degree or higher (35.8% across Delaware); the average commute takes 28 minutes.

Population8,485Seaford8,485
Households3,516Seaford3,516
Median age41.1Seaford41.1Delaware41.6US 38.9
Median household income$54,016Seaford$54,016Delaware$84,954US $80,734
Median home value$224,300Seaford$224,300Delaware$352,000US $332,700
Median gross rent$1,176Seaford$1,176Delaware$1,401US $1,413
Bachelor's degree or higher15.3%Seaford15.3%Delaware35.8%US 35.7%
Mean commute28.1 minSeaford28.1 minDelaware26.0 minUS 26.4 min
Population density1,670 / sq miSeaford1,670 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Seaford city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Seaford

ZIP codes with the USPS city name Seaford
ZIP City Type Population Median income Median home
19973 Seaford , DE Standard 26,834 $64,387 $278,300

Other ZIP codes overlapping Seaford

These ZIP codes cover part of Seaford but are addressed as somewhere else.

ZIP codes overlapping Seaford
ZIP City Type Population Median income Median home
19933 Bridgeville , DE Standard 10,597 $60,703 $269,200

Map of Seaford ZIP codes

The ZIP codes of Seaford, DE, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Seaford

The nearest larger towns are Salisbury, MD (33,285 people, 20 mi), Milford (12,803 people, 20 mi) and Easton, MD (17,308 people, 26 mi).

Towns near Seaford
TownPopulationDistance
Bridgeville 2,745 4.7 mi
Laurel 4,152 6.4 mi
Federalsburg, MD 2,837 8.9 mi
Georgetown 7,660 12.4 mi
Hurlock, MD 2,819 13.9 mi
Delmar, MD 4,261 15.1 mi
Millsboro 7,424 17.1 mi
Milton 3,567 18.3 mi
Harrington 3,838 18.6 mi
Denton, MD 4,936 19.1 mi
Salisbury, MD 33,285 19.5 mi
Milford 12,803 20.3 mi
Fruitland, MD 5,801 23.3 mi
Greensboro, MD 2,634 24.4 mi

More nearby: every ZIP code in Sussex County · Delaware ZIP codes

Cite this page

zipcodes.pro. “Seaford, DE ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/de/seaford

Underlying data is public domain or openly licensed — sources, vintages and licences.