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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Middletown, DE

Middletown, DE Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 19709StandardNew Castle35,107302

Timezone(s):Eastern (GMT -05:00)
Population:18,871 (More Details)
Male Population:8,881
Female Population:9,990
Median Age:33
ZIP Codes:1
Area Codes:1
Total Area:494 square miles (county)
Land Area:426 square miles (county)
Water Area:68 square miles (county)

Middletown, DE Demographic Information *

Total population18,871
Male population8,881
Female population9,990
Median age (years)33
White Population11,688
Black Population5,367
Indian Population36
Asian Population709
Hawaiian Population8
Hispanic Population1,396
Median age (Male)31.7
Median age (Female)34.2
Total households6,465
Family households (families)4,985
Average household size2.9
Average family size3.28
Total housing units6,821
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],