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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
Idaho
23/sq mi
Rankings
Full list

Top and bottom zip codes in Idaho

Zip codes with 1,000+ residents

Most densely populated zip codes

See all
  1. 183844Moscow5,061/sq mi
  2. 283704Boise4,881/sq mi
  3. 383706Boise4,781/sq mi
  4. 483713Boise4,778/sq mi
  5. 583646Meridian2,787/sq mi
  6. 683815Coeur D'alene2,651/sq mi
  7. 783651Nampa2,391/sq mi
  8. 883703Boise2,162/sq mi
  9. 983709Boise1,749/sq mi
  10. 1083605Caldwell1,678/sq mi

Most sparsely populated zip codes

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  1. 183342Malta1/sq mi
  2. 283226Challis1/sq mi
  3. 383327Fairfield1/sq mi
  4. 483539Kooskia1/sq mi
  5. 583611Cascade1/sq mi
  6. 683251Mackay1/sq mi
  7. 783213Arco2/sq mi
  8. 883320Carey4/sq mi
  9. 983612Council4/sq mi
  10. 1083346Oakley5/sq mi

Population density by county in Idaho

  1. 1Ada County493/sq mi
  2. 2Canyon County427/sq mi
  3. 3Kootenai County147/sq mi
  4. 4Madison County116/sq mi
  5. 5Bannock County80/sq mi
  6. 6Bonneville County69/sq mi
  7. 7Payette County66/sq mi
  8. 8Nez Perce County50/sq mi
  9. 9Twin Falls County49/sq mi
  10. 10Jerome County42/sq mi
  11. 11Latah County38/sq mi
  12. 12Gem County37/sq mi
  13. 13Jefferson County30/sq mi
  14. 14Bonner County30/sq mi
  15. 15Minidoka County29/sq mi
  16. 16Teton County28/sq mi
  17. 17Bingham County24/sq mi
  18. 18Franklin County23/sq mi
  19. 19Gooding County22/sq mi
  20. 20Benewah County13/sq mi
  21. 21Boundary County10/sq mi
  22. 22Cassia County10/sq mi
  23. 23Blaine County10/sq mi
  24. 24Elmore County10/sq mi
  25. 25Lewis County8/sq mi
  26. 26Washington County8/sq mi
  27. 27Fremont County8/sq mi
  28. 28Bear Lake County7/sq mi
  29. 29Power County6/sq mi
  30. 30Shoshone County5/sq mi
  31. 31Lincoln County5/sq mi
  32. 32Boise County4/sq mi
  33. 33Caribou County4/sq mi
  34. 34Oneida County4/sq mi
  35. 35Clearwater County4/sq mi
  36. 36Adams County4/sq mi
  37. 37Valley County3/sq mi
  38. 38Idaho County2/sq mi
  39. 39Lemhi County2/sq mi
  40. 40Owyhee County2/sq mi
  41. 41Butte County1/sq mi
  42. 42Camas County1/sq mi
  43. 43Custer County1/sq mi
  44. 44Clark County1/sq mi

Questions about this map

Which zip code has the highest population density in Idaho?

Among zip codes with at least 1,000 residents, 83844 (Moscow, ID) has the highest: 5,061/sq mi.

Which zip code has the lowest population density in Idaho?

83342 (Malta, ID) has the lowest: 1/sq mi.

What is the population density for the United States?

95/sq mi; in Idaho it is 23/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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