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About this map

Residents per square mile of land (water excluded). Under 50 is rural, a few hundred is small-town, 2,500+ is urban, and 10,000+ is big-city dense.

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

U.S.
95/sq mi
Delaware
524/sq mi
Rankings
Full list

Top and bottom zip codes in Delaware

Zip codes with 1,000+ residents

Most densely populated zip codes

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  1. 119717Newark23,395/sq mi
  2. 219805Wilmington7,503/sq mi
  3. 319802Wilmington7,477/sq mi
  4. 419806Wilmington5,734/sq mi
  5. 519703Claymont3,893/sq mi
  6. 619801Wilmington3,713/sq mi
  7. 719810Wilmington3,360/sq mi
  8. 819808Wilmington2,842/sq mi
  9. 919804Wilmington2,617/sq mi
  10. 1019713Newark2,365/sq mi

Most sparsely populated zip codes

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  1. 119950Greenwood109/sq mi
  2. 219941Ellendale113/sq mi
  3. 319952Harrington120/sq mi
  4. 419954Houston146/sq mi
  5. 519945Frankford155/sq mi
  6. 619933Bridgeville158/sq mi
  7. 719956Laurel163/sq mi
  8. 819947Georgetown174/sq mi
  9. 919964Marydel175/sq mi
  10. 1019953Hartly176/sq mi

Population density by county in Delaware

  1. 1New Castle County1,356/sq mi
  2. 2Kent County320/sq mi
  3. 3Sussex County273/sq mi

Questions about this map

Which zip code has the highest population density in Delaware?

Among zip codes with at least 1,000 residents, 19717 (Newark, DE) has the highest: 23,395/sq mi.

Which zip code has the lowest population density in Delaware?

19950 (Greenwood, DE) has the lowest: 109/sq mi.

What is the population density for the United States?

95/sq mi; in Delaware it is 524/sq mi.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). Residents per square mile of land (water excluded). Under 50 is rural, a few hundred is small-town, 2,500+ is urban, and 10,000+ is big-city dense.

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