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"O " Cities with post offices in Illinois

We have currently 3650 Post Offices physically located in Illinois. If you know any more post office that you want to add please use submission form.

What is the first letter of the city or town where you want to find a post office?

A --> 40 post offices B --> 73 post offices C --> 85 post offices D --> 19 post offices E --> 60 post offices F --> 13 post offices G --> 48 post offices H --> 46 post offices I --> 8 post offices J --> 12 post offices K --> 21 post offices L --> 40 post offices M -->79 post offices N --> 28 post offices O -->21 post offices P --> 198 post offices Q -->0 post offices R --> 39 post offices S --> 124 post offices T --> 51 post offices U --> 6 post offices V --> 6 post offices W --> 47 post offices Y --> 0 post offices

Post offices in Illinois

Found 38 cities with post offices that begin with letter " O ".

Illinois post offices

Click on any link bellow to find post offices and see opening hours.

  1. ORLAND PARK 18 post offices
  2. --1 ORLAND PARK PL STE 190, 60462, ORLAND PARK IL details
    --9500 W 144TH PL, 60462, ORLAND PARK IL details
    --15128 S LA GRANGE RD, 60462, ORLAND PARK IL details
    --15701 S 71ST CT, 60462, ORLAND PARK IL details
    --15515 S 95TH AVE, 60462, ORLAND PARK IL details
    --15202 S LA GRANGE RD, 60462, ORLAND PARK IL details
    --28 ORLAND SQUARE DR, 60462, ORLAND PARK IL details
    --9915 W 159TH ST, 60467, ORLAND PARK IL details
    --10500 W 167TH ST, 60467, ORLAND PARK IL details
    --11201 W 143RD ST, 60467, ORLAND PARK IL details
    --15701 S 71ST CT, 60462, ORLAND PARK IL details
    --9350 W 159TH ST, 60462, ORLAND PARK IL details
    --17930 WOLF RD, 60467, ORLAND PARK IL details
    --7960 W 159TH ST, 60462, ORLAND PARK IL details
    --17955 WOLF RD, 60467, ORLAND PARK IL details
    --14680 S LA GRANGE RD, 60462, ORLAND PARK IL details
    --11349 W 159TH ST, 60467, ORLAND PARK IL details
    --11981 W 143RD ST, 60467, ORLAND PARK IL details

  3. OAK BROOK 5 post offices
  4. --1314 KENSINGTON RD, 60523, OAK BROOK IL details
    --1603 16TH ST, 60523, OAK BROOK IL details
    --1901 W 22ND ST, 60523, OAK BROOK IL details
    --1500 16TH ST STE C, 60523, OAK BROOK IL details
    --2205 W 22ND ST, 60523, OAK BROOK IL details

  5. OAK LAWN 10 post offices
  6. --9249 S CICERO AVE, 60453, OAK LAWN IL details
    --9631 S CICERO AVE, 60453, OAK LAWN IL details
    --9400 S CICERO AVE, 60453, OAK LAWN IL details
    --4900 W 95TH ST, 60453, OAK LAWN IL details
    --8801 RIDGELAND AVE, 60453, OAK LAWN IL details
    --9424 S PULASKI RD, 60453, OAK LAWN IL details
    --4650 W 103RD ST, 60453, OAK LAWN IL details
    --10639 S CICERO AVE, 60453, OAK LAWN IL details
    --6201 W 95TH ST, 60453, OAK LAWN IL details
    --4740 W 95TH ST, 60453, OAK LAWN IL details

  7. O FALLON 4 post offices
  8. --1111 S LINCOLN AVE, 62269, O FALLON IL details
    --400 S LINCOLN AVE, 62269, O FALLON IL details
    --504 HARTMAN LN, 62269, O FALLON IL details
    --704 CAMBRIDGE BLVD, 62269, O FALLON IL details

  9. OAK FOREST 5 post offices
  10. --15811 CENTRAL AVE, 60452, OAK FOREST IL details
    --5556 159TH ST, 60452, OAK FOREST IL details
    --15840 CICERO AVE, 60452, OAK FOREST IL details
    --5616 159TH ST, 60452, OAK FOREST IL details
    --5525 159TH ST, 60452, OAK FOREST IL details

  11. OAK PARK 11 post offices
  12. --901 LAKE ST, 60301, OAK PARK IL details
    --1116 GARFIELD ST, 60304, OAK PARK IL details
    --840 S OAK PARK AVE, 60304, OAK PARK IL details
    --11 MADISON ST, 60302, OAK PARK IL details
    --123 MADISON ST, 60302, OAK PARK IL details
    --6748 ROOSEVELT RD, 60304, OAK PARK IL details
    --345 MADISON ST, 60302, OAK PARK IL details
    --7036 ROOSEVELT RD, 60304, OAK PARK IL details
    --438 MADISON ST, 60302, OAK PARK IL details
    --6412 ROOSEVELT RD, 60304, OAK PARK IL details
    --811 MADISON ST, 60302, OAK PARK IL details

  13. OAKDALE 1 post office

  14. OAKFORD 1 post office

  15. OAKLAND 2 post offices
  16. --4 PIKE ST, 61943, OAKLAND IL details
    --110 W STATE HIGHWAY 133, 61943, OAKLAND IL details

  17. OAKWOOD 1 post office

  18. OBLONG 2 post offices
  19. --207 N RANGE ST, 62449, OBLONG IL details
    --505 E MAIN ST, 62449, OBLONG IL details

  20. OCONEE 1 post office

  21. ODELL 1 post office

  22. ODIN 2 post offices
  23. --104 E KIRKWOOD ST, 62870, ODIN IL details
    --105 W POPLAR ST, 62870, ODIN IL details

  24. OGDEN 1 post office

  25. OGLESBY 2 post offices
  26. --203 W WALNUT ST, 61348, OGLESBY IL details
    --100 N COLUMBIA AVE, 61348, OGLESBY IL details

  27. OHIO 1 post office

  28. OHLMAN 1 post office

  29. OKAWVILLE 1 post office

  30. OLIVE BRANCH 1 post office

  31. OLMSTED 1 post office

  32. OLNEY 4 post offices
  33. --330 S WHITTLE AVE, 62450, OLNEY IL details
    --914 W MAIN ST, 62450, OLNEY IL details
    --1002 E MAIN ST, 62450, OLNEY IL details
    --1001 N WEST ST, 62450, OLNEY IL details

  34. OLYMPIA FIELDS 4 post offices
  35. --3033 203RD ST, 60461, OLYMPIA FIELDS IL details
    --3400 LINCOLN HWY, 60461, OLYMPIA FIELDS IL details
    --20950 GOVERNORS HWY, 60461, OLYMPIA FIELDS IL details
    --3200 VOLLMER RD, 60461, OLYMPIA FIELDS IL details

  36. OMAHA 1 post office

  37. ONARGA 2 post offices
  38. --120 W SEMINARY AVE, 60955, ONARGA IL details
    --102 N OAK ST, 60955, ONARGA IL details

  39. ONEIDA 1 post office

  40. OPDYKE 1 post office

  41. OQUAWKA 1 post office

  42. ORANGEVILLE 2 post offices
  43. --211 W HIGH ST, 61060, ORANGEVILLE IL details
    --456 HIGH ST, 61060, ORANGEVILLE IL details

  44. OREANA 1 post office

  45. OREGON 2 post offices
  46. --500 WASHINGTON ST, 61061, OREGON IL details
    --901 WASHINGTON ST, 61061, OREGON IL details

  47. ORIENT 1 post office

  48. ORION 2 post offices
  49. --1012 4TH ST, 61273, ORION IL details
    --1101 DIVISION ST, 61273, ORION IL details

  50. OSCO 1 post office

  51. OSWEGO 12 post offices
  52. --26 S MADISON ST, 60543, OSWEGO IL details
    --2700 US HIGHWAY 34, 60543, OSWEGO IL details
    --1200 DOUGLAS RD, 60543, OSWEGO IL details
    --2660 US HIGHWAY 34, 60543, OSWEGO IL details
    --2700 US HIGHWAY 34, 60543, OSWEGO IL details
    --4574 STATE ROUTE 71, 60543, OSWEGO IL details
    --3795 ORCHARD RD, 60543, OSWEGO IL details
    --2540 US HIGHWAY 30, 60543, OSWEGO IL details
    --3070 US HIGHWAY 34, 60543, OSWEGO IL details
    --3401 ORCHARD RD, 60543, OSWEGO IL details
    --410 CHICAGO RD, 60543, OSWEGO IL details
    --2300 US HIGHWAY 34, 60543, OSWEGO IL details

  53. OTTAWA 8 post offices
  54. --750 E ETNA RD, 61350, OTTAWA IL details
    --405 W MAIN ST, 61350, OTTAWA IL details
    --2701 COLUMBUS ST, 61350, OTTAWA IL details
    --301 E MCKINLEY RD, 61350, OTTAWA IL details
    --323 E NORRIS DR, 61350, OTTAWA IL details
    --400 W NORRIS DR, 61350, OTTAWA IL details
    --545 E NORRIS DR, 61350, OTTAWA IL details
    --4041 VETERANS DR, 61350, OTTAWA IL details

  55. OZARK 1 post office

  56. ORLAND HILLS 1 post office

Total # of Post Offices: 117 (click on any link above to check post office Open Hours)

Note: Some locations beside Open hours do include info about: Passport Acceptance Hour,Passport Photo Hours,PO Box Access Hours,Carrier Facility Hours, Global Express Guaranteed Hours,Pickup Services Hours.