Middletown, DE ZIP code
The ZIP code for Middletown, Delaware is 19709. It is in New Castle County.
- Population in these ZIPs
- 53,234
- Avg. median income
- $133,000population-weighted
- Typical home value
- $535,800population-weighted
Loading map…
Click anywhere on the map to see which ZIP code it's in.
Middletown, DE ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 19709 | 53,234 | $132,956 | $535,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Middletown
- Odessa 3 mi
- Port Penn 4 mi
- Saint Georges 5 mi
- Bear 6 mi
- Delaware City 7 mi
- Townsend 8 mi
- Newark 9 mi
- New Castle 10 mi
- Smyrna 15 mi
- Wilmington 15 mi
- Clayton 16 mi
- Kenton 18 mi
Frequently asked questions
What is the ZIP code for Middletown, DE?
The ZIP code for Middletown, DE is 19709.
What county is Middletown, Delaware in?
Middletown ZIP codes are in New Castle County.