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About this map

Everyone who lives in the zip code, from the Census Bureau's American Community Survey (5-year average).

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024).

U.S.
334,922,499
Delaware
1,021,191
Rankings
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Top and bottom zip codes in Delaware

Zip codes with 1,000+ residents

Most populated zip codes

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  1. 119720New Castle62,392
  2. 219702Newark55,683
  3. 319709Middletown53,234
  4. 419711Newark49,432
  5. 519701Bear42,984
  6. 619805Wilmington41,402
  7. 719808Wilmington39,082
  8. 819904Dover38,818
  9. 919901Dover37,763
  10. 1019966Millsboro35,884

Least populated zip codes

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  1. 119964Marydel1,418
  2. 219954Houston1,427
  3. 319706Delaware City2,038
  4. 419951Harbeson2,245
  5. 519967Millville2,376
  6. 619930Bethany Beach3,014
  7. 719941Ellendale3,435
  8. 819953Hartly5,255
  9. 919946Frederica5,603
  10. 1019717Newark6,036

Population by county in Delaware

  1. 1New Castle County577,961
  2. 2Sussex County255,626
  3. 3Kent County187,604

Questions about this map

Which zip code has the highest population in Delaware?

Among zip codes with at least 1,000 residents, 19720 (New Castle, DE) has the highest: 62,392.

Which zip code has the lowest population in Delaware?

19964 (Marydel, DE) has the lowest: 1,418.

What is the population for the United States?

334,922,499; in Delaware it is 1,021,191.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). Everyone who lives in the zip code, from the Census Bureau's American Community Survey (5-year average).

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