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Lake County ZIP Codes

List of ZIP Codes in Lake County

The following table lists ZIP Codes associated with Lake County, Indiana, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.


S.N. Zip Code Latitude Longitude City Population Density
1 46303 41.37198 -87.4765 Cedar Lake 16,910 227.1
2 46307 41.40215 -87.32693 Crown Point 71,418 316.1
3 46311 41.46846 -87.50918 Dyer 23,405 717.2
4 46312 41.64705 -87.45446 East Chicago 26,158 719.7
5 46319 41.52217 -87.42091 Griffith 17,683 712.6
6 46320 41.60893 -87.49754 Hammond 14,097 1168.8
7 46321 41.54704 -87.50402 Munster 23,733 1206.6
8 46322 41.54818 -87.45884 Highland 23,749 1329.3
9 46323 41.58961 -87.45323 Hammond 23,184 1443.5
10 46324 41.58324 -87.50155 Hammond 21,433 1898.1
11 46327 41.64048 -87.50677 Hammond 10,797 906.0
12 46342 41.51761 -87.24468 Hobart 32,525 358.4
13 46356 41.26117 -87.41863 Lowell 19,396 66.6
14 46373 41.44578 -87.46954 Saint John 18,509 656.7
15 46375 41.49162 -87.45193 Schererville 24,012 726.7
16 46376 41.1838 -87.47603 Schneider 280 12.1
17 46377 41.19432 -87.34777 Shelby 31 57.9
18 46394 41.67733 -87.50279 Whiting 12,141 988.5
19 46402 41.61032 -87.33297 Gary 5,636 257.9
20 46403 41.60636 -87.25803 Gary 10,697 451.9
21 46404 41.58475 -87.37502 Gary 16,846 1082.7
22 46405 41.57409 -87.26285 Lake Station 11,509 492.2
23 46406 41.6022 -87.40804 Gary 8,513 243.9
24 46407 41.57844 -87.33047 Gary 8,889 822.0
25 46408 41.54468 -87.36941 Gary 15,571 617.3
26 46409 41.54828 -87.32422 Gary 7,072 762.8
27 46410 41.48083 -87.33293 Merrillville 38,803 498.5


About Lake County ZIP Codes

Lake County in Indiana (IN) is served by approximately 27 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 502,997 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in Lake County are located in cities such as Gary, Crown Point, Hammond, Merrillville, Hobart. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in Lake County, Indiana follow the America/Chicago time zone.

Indiana Counties ZIP Codes

  1. Adams County ZIP Codes
  2. Allen County ZIP Codes
  3. Bartholomew County ZIP Codes
  4. Benton County ZIP Codes
  5. Blackford County ZIP Codes
  6. Boone County ZIP Codes
  7. Brown County ZIP Codes
  8. Carroll County ZIP Codes
  9. Cass County ZIP Codes
  10. Clark County ZIP Codes
  11. Clay County ZIP Codes
  12. Clinton County ZIP Codes
  13. Crawford County ZIP Codes
  14. Daviess County ZIP Codes
  15. Dearborn County ZIP Codes
  16. Decatur County ZIP Codes
  17. DeKalb County ZIP Codes
  18. Delaware County ZIP Codes
  19. Dubois County ZIP Codes
  20. Elkhart County ZIP Codes
  21. Fayette County ZIP Codes
  22. Floyd County ZIP Codes
  23. Fountain County ZIP Codes
  24. Franklin County ZIP Codes
  25. Fulton County ZIP Codes
  26. Gibson County ZIP Codes
  27. Grant County ZIP Codes
  28. Greene County ZIP Codes
  29. Hamilton County ZIP Codes
  30. Hancock County ZIP Codes
  31. Harrison County ZIP Codes
  32. Hendricks County ZIP Codes
  33. Henry County ZIP Codes
  34. Howard County ZIP Codes
  35. Huntington County ZIP Codes
  36. Jackson County ZIP Codes
  37. Jasper County ZIP Codes
  38. Jay County ZIP Codes
  39. Jefferson County ZIP Codes
  40. Jennings County ZIP Codes
  41. Johnson County ZIP Codes
  42. Knox County ZIP Codes
  43. Kosciusko County ZIP Codes
  44. LaGrange County ZIP Codes
  45. Lake County ZIP Codes
  46. LaPorte County ZIP Codes
  47. Lawrence County ZIP Codes
  48. Madison County ZIP Codes
  49. Marion County ZIP Codes
  50. Marshall County ZIP Codes
  51. Martin County ZIP Codes
  52. Miami County ZIP Codes
  53. Monroe County ZIP Codes
  54. Montgomery County ZIP Codes
  55. Morgan County ZIP Codes
  56. Newton County ZIP Codes
  57. Noble County ZIP Codes
  58. Ohio County ZIP Codes
  59. Orange County ZIP Codes
  60. Owen County ZIP Codes
  61. Parke County ZIP Codes
  62. Perry County ZIP Codes
  63. Pike County ZIP Codes
  64. Porter County ZIP Codes
  65. Posey County ZIP Codes
  66. Pulaski County ZIP Codes
  67. Putnam County ZIP Codes
  68. Randolph County ZIP Codes
  69. Ripley County ZIP Codes
  70. Rush County ZIP Codes
  71. Scott County ZIP Codes
  72. Shelby County ZIP Codes
  73. Spencer County ZIP Codes
  74. St. Joseph County ZIP Codes
  75. Starke County ZIP Codes
  76. Steuben County ZIP Codes
  77. Sullivan County ZIP Codes
  78. Switzerland County ZIP Codes
  79. Tippecanoe County ZIP Codes
  80. Tipton County ZIP Codes
  81. Union County ZIP Codes
  82. Vanderburgh County ZIP Codes
  83. Vermillion County ZIP Codes
  84. Vigo County ZIP Codes
  85. Wabash County ZIP Codes
  86. Warren County ZIP Codes
  87. Warrick County ZIP Codes
  88. Washington County ZIP Codes
  89. Wayne County ZIP Codes
  90. Wells County ZIP Codes
  91. White County ZIP Codes
  92. Whitley County ZIP Codes