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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
Iowa
58/sq mi
Rankings
Full list

Top and bottom zip codes in Iowa

Zip codes with 1,000+ residents

Most densely populated zip codes

See all
  1. 150013Ames6,600/sq mi
  2. 252242Iowa City6,548/sq mi
  3. 350311Des Moines5,711/sq mi
  4. 450012Ames5,561/sq mi
  5. 550316Des Moines4,685/sq mi
  6. 652801Davenport4,620/sq mi
  7. 752803Davenport4,425/sq mi
  8. 850314Des Moines4,228/sq mi
  9. 950310Des Moines3,880/sq mi
  10. 1050309Des Moines3,725/sq mi

Most sparsely populated zip codes

See all
  1. 151462Scranton9/sq mi
  2. 250833Bedford10/sq mi
  3. 350514Armstrong10/sq mi
  4. 450841Corning10/sq mi
  5. 551016Correctionville10/sq mi
  6. 650424Buffalo Center10/sq mi
  7. 752155Lime Springs11/sq mi
  8. 850447Kanawha11/sq mi
  9. 952540Brighton11/sq mi
  10. 1050864Villisca11/sq mi

Population density by county in Iowa

  1. 1Polk County879/sq mi
  2. 2Scott County381/sq mi
  3. 3Linn County321/sq mi
  4. 4Johnson County256/sq mi
  5. 5Black Hawk County232/sq mi
  6. 6Dallas County184/sq mi
  7. 7Story County176/sq mi
  8. 8Dubuque County163/sq mi
  9. 9Woodbury County122/sq mi
  10. 10Pottawattamie County98/sq mi
  11. 11Muscatine County97/sq mi
  12. 12Warren County96/sq mi
  13. 13Des Moines County93/sq mi
  14. 14Wapello County82/sq mi
  15. 15Cerro Gordo County75/sq mi
  16. 16Marshall County70/sq mi
  17. 17Clinton County67/sq mi
  18. 18Lee County64/sq mi
  19. 19Marion County61/sq mi
  20. 20Bremer County58/sq mi
  21. 21Jasper County52/sq mi
  22. 22Webster County52/sq mi
  23. 23Dickinson County47/sq mi
  24. 24Sioux County47/sq mi
  25. 25Boone County47/sq mi
  26. 26Henry County46/sq mi
  27. 27Washington County40/sq mi
  28. 28Mahaska County39/sq mi
  29. 29Jones County36/sq mi
  30. 30Buchanan County36/sq mi
  31. 31Carroll County36/sq mi
  32. 32Buena Vista County36/sq mi
  33. 33Jefferson County36/sq mi
  34. 34Benton County36/sq mi
  35. 35Mills County33/sq mi
  36. 36Cedar County32/sq mi
  37. 37Poweshiek County32/sq mi
  38. 38Floyd County31/sq mi
  39. 39Jackson County31/sq mi
  40. 40Delaware County30/sq mi
  41. 41Madison County30/sq mi
  42. 42Plymouth County30/sq mi
  43. 43Hardin County29/sq mi
  44. 44Clay County29/sq mi
  45. 45Winneshiek County29/sq mi
  46. 46Page County28/sq mi
  47. 47Union County28/sq mi
  48. 48Iowa County28/sq mi
  49. 49Louisa County27/sq mi
  50. 50Fayette County26/sq mi
  51. 51Winnebago County26/sq mi
  52. 52Hamilton County26/sq mi
  53. 53Grundy County25/sq mi
  54. 54O'Brien County25/sq mi
  55. 55Butler County25/sq mi
  56. 56Appanoose County25/sq mi
  57. 57Montgomery County24/sq mi
  58. 58Chickasaw County23/sq mi
  59. 59Emmet County23/sq mi
  60. 60Tama County23/sq mi
  61. 61Cass County23/sq mi
  62. 62Crawford County23/sq mi
  63. 63Mitchell County23/sq mi
  64. 64Clarke County22/sq mi
  65. 65Allamakee County22/sq mi
  66. 66Humboldt County22/sq mi
  67. 67Wright County22/sq mi
  68. 68Clayton County22/sq mi
  69. 69Harrison County21/sq mi
  70. 70Lyon County21/sq mi
  71. 71Lucas County20/sq mi
  72. 72Cherokee County20/sq mi
  73. 73Howard County20/sq mi
  74. 74Shelby County20/sq mi
  75. 75Hancock County19/sq mi
  76. 76Worth County18/sq mi
  77. 77Davis County18/sq mi
  78. 78Guthrie County18/sq mi
  79. 79Monroe County17/sq mi
  80. 80Calhoun County17/sq mi
  81. 81Franklin County17/sq mi
  82. 82Keokuk County17/sq mi
  83. 83Sac County17/sq mi
  84. 84Ida County16/sq mi
  85. 85Palo Alto County16/sq mi
  86. 86Greene County15/sq mi
  87. 87Osceola County15/sq mi
  88. 88Kossuth County15/sq mi
  89. 89Van Buren County15/sq mi
  90. 90Decatur County15/sq mi
  91. 91Adair County13/sq mi
  92. 92Fremont County13/sq mi
  93. 93Audubon County13/sq mi
  94. 94Wayne County12/sq mi
  95. 95Monona County12/sq mi
  96. 96Pocahontas County12/sq mi
  97. 97Taylor County11/sq mi
  98. 98Ringgold County9/sq mi
  99. 99Adams County9/sq mi

Questions about this map

Which zip code has the highest population density in Iowa?

Among zip codes with at least 1,000 residents, 50013 (Ames, IA) has the highest: 6,600/sq mi.

Which zip code has the lowest population density in Iowa?

51462 (Scranton, IA) has the lowest: 9/sq mi.

What is the population density for the United States?

95/sq mi; in Iowa it is 58/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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