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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
Colorado
5,862,189
Rankings
Full list

Top and bottom zip codes in Colorado

Zip codes with 1,000+ residents

Most populated zip codes

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  1. 180134Parker80,302
  2. 280013Aurora73,248
  3. 380015Aurora72,316
  4. 480016Aurora68,268
  5. 580634Greeley65,622
  6. 680504Longmont63,451
  7. 780022Commerce City61,452
  8. 880219Denver59,523
  9. 980229Denver55,092
  10. 1080525Fort Collins54,211

Least populated zip codes

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  1. 181036Eads1,017
  2. 280832Ramah1,019
  3. 380623Gilcrest1,026
  4. 481645Minturn1,028
  5. 580728Fleming1,029
  6. 681131Crestone1,051
  7. 780444Georgetown1,053
  8. 881630De Beque1,058
  9. 981424Nucla1,079
  10. 1081133Fort Garland1,085

Population by county in Colorado

  1. 1El Paso County742,999
  2. 2Denver County718,877
  3. 3Arapahoe County659,844
  4. 4Jefferson County579,377
  5. 5Adams County530,225
  6. 6Douglas County377,150
  7. 7Larimer County367,368
  8. 8Weld County350,396
  9. 9Boulder County328,961
  10. 10Pueblo County169,356
  11. 11Mesa County158,601
  12. 12Broomfield County76,304
  13. 13Garfield County62,479
  14. 14La Plata County56,331
  15. 15Eagle County55,135
  16. 16Fremont County49,634
  17. 17Montrose County43,807
  18. 18Delta County31,598
  19. 19Summit County31,017
  20. 20Morgan County29,520
  21. 21Elbert County27,874
  22. 22Montezuma County26,412
  23. 23Routt County25,084
  24. 24Teller County24,825
  25. 25Logan County20,892
  26. 26Chaffee County20,178
  27. 27Otero County18,321
  28. 28Park County17,907
  29. 29Gunnison County17,241
  30. 30Pitkin County16,985
  31. 31Alamosa County16,581
  32. 32Grand County15,895
  33. 33Las Animas County14,413
  34. 34Archuleta County13,900
  35. 35Moffat County13,207
  36. 36Prowers County11,910
  37. 37Rio Grande County11,321
  38. 38Yuma County9,979
  39. 39Clear Creek County9,262
  40. 40San Miguel County7,968
  41. 41Conejos County7,530
  42. 42Lake County7,380
  43. 43Kit Carson County7,023
  44. 44Huerfano County6,972
  45. 45Saguache County6,580
  46. 46Rio Blanco County6,544
  47. 47Gilpin County5,901
  48. 48Crowley County5,647
  49. 49Lincoln County5,550
  50. 50Bent County5,549
  51. 51Custer County5,247
  52. 52Ouray County5,087
  53. 53Washington County4,831
  54. 54Phillips County4,496
  55. 55Costilla County3,607
  56. 56Baca County3,428
  57. 57Dolores County2,432
  58. 58Sedgwick County2,304
  59. 59Cheyenne County1,741
  60. 60Kiowa County1,376
  61. 61Jackson County1,372
  62. 62Hinsdale County1,005
  63. 63Mineral County729
  64. 64San Juan County724

Questions about this map

Which zip code has the highest population in Colorado?

Among zip codes with at least 1,000 residents, 80134 (Parker, CO) has the highest: 80,302.

Which zip code has the lowest population in Colorado?

81036 (Eads, CO) has the lowest: 1,017.

What is the population for the United States?

334,922,499; in Colorado it is 5,862,189.

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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