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/MIDDLETOWN

Middletown ZIP code, Delaware

The ZIP code for Middletown, DE is 19709, and its area code is 302.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
24,661
Area code
302

Mail addressed to Middletown 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.

Middletown in numbers

About 24,661 people live in Middletown, in 9,013 households, the 4th-largest of Delaware's 79 census places. The median household income is $112,831 a year, 33% above the Delaware median of $84,954 (US: $80,734). The median owner-occupied home is valued at $409,600 (16% above the Delaware median), and median gross rent is $1,583 a month. The median age is 38.7; 44.0% of adults 25 and over hold a bachelor's degree or higher (35.8% across Delaware); the average commute takes 30 minutes.

Population24,661Middletown24,661
Households9,013Middletown9,013
Median age38.7Middletown38.7Delaware41.6US 38.9
Median household income$112,831Middletown$112,831Delaware$84,954US $80,734
Median home value$409,600Middletown$409,600Delaware$352,000US $332,700
Median gross rent$1,583Middletown$1,583Delaware$1,401US $1,413
Bachelor's degree or higher44.0%Middletown44.0%Delaware35.8%US 35.7%
Mean commute30.0 minMiddletown30.0 minDelaware26.0 minUS 26.4 min
Population density1,827 / sq miMiddletown1,827 / sq mi

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

ZIP codes addressed as Middletown

ZIP codes with the USPS city name Middletown
ZIP City Type Population Median income Median home
19709 Middletown , DE Standard 53,234 $132,956 $470,900

Other ZIP codes overlapping Middletown

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

ZIP codes overlapping Middletown
ZIP City Type Population Median income Median home
19734 Townsend , DE Standard 14,214 $127,803 $430,700

Map of Middletown ZIP codes

19709

The ZIP codes of Middletown, 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 Middletown

The nearest larger towns are Newark (30,330 people, 16 mi), Dover (39,837 people, 22 mi) and Wilmington (71,727 people, 22 mi).

Towns near Middletown
TownPopulationDistance
Townsend 2,832 2.8 mi
Glasgow 15,546 11.0 mi
Smyrna 13,165 11.8 mi
Bear 22,370 12.3 mi
Elkton, MD 15,910 12.5 mi
Clayton 4,222 12.6 mi
Brookside 15,115 15.4 mi
Salem, NJ 5,322 15.6 mi
Newark 30,330 16.3 mi
North East, MD 4,134 16.5 mi
New Castle 5,579 17.6 mi
Wilmington Manor 8,214 18.2 mi
Pennsville, NJ 12,233 18.3 mi
Pike Creek Valley 12,431 19.8 mi

More nearby: every ZIP code in New Castle County · Delaware ZIP codes

Cite this page

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

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