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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
Maine
45/sq mi
Rankings
Full list

Top and bottom zip codes in Maine

Zip codes with 1,000+ residents

Most densely populated zip codes

See all
  1. 104101Portland9,088/sq mi
  2. 204469Orono4,130/sq mi
  3. 304103Portland3,131/sq mi
  4. 404102Portland2,881/sq mi
  5. 504106South Portland2,224/sq mi
  6. 604064Old Orchard Beach1,288/sq mi
  7. 704092Westbrook1,209/sq mi
  8. 804240Lewiston1,122/sq mi
  9. 903904Kittery768/sq mi
  10. 1004346Randolph754/sq mi

Most sparsely populated zip codes

See all
  1. 104765Patten2/sq mi
  2. 204441Greenville2/sq mi
  3. 304945Jackman2/sq mi
  4. 404622Cherryfield3/sq mi
  5. 504747Island Falls4/sq mi
  6. 604970Rangeley5/sq mi
  7. 704732Ashland5/sq mi
  8. 804462Millinocket6/sq mi
  9. 904966Phillips7/sq mi
  10. 1004414Brownville8/sq mi

Population density by county in Maine

  1. 1Cumberland County369/sq mi
  2. 2Androscoggin County242/sq mi
  3. 3York County219/sq mi
  4. 4Sagadahoc County147/sq mi
  5. 5Kennebec County146/sq mi
  6. 6Knox County112/sq mi
  7. 7Lincoln County79/sq mi
  8. 8Waldo County55/sq mi
  9. 9Penobscot County46/sq mi
  10. 10Hancock County36/sq mi
  11. 11Oxford County29/sq mi
  12. 12Franklin County18/sq mi
  13. 13Somerset County13/sq mi
  14. 14Washington County12/sq mi
  15. 15Aroostook County10/sq mi
  16. 16Piscataquis County4/sq mi

Questions about this map

Which zip code has the highest population density in Maine?

Among zip codes with at least 1,000 residents, 04101 (Portland, ME) has the highest: 9,088/sq mi.

Which zip code has the lowest population density in Maine?

04765 (Patten, ME) has the lowest: 2/sq mi.

What is the population density for the United States?

95/sq mi; in Maine it is 45/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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