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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?

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A --> 163 post offices B --> 251 post offices C --> 702 post offices D --> 140 post offices E --> 163 post offices F --> 90 post offices G --> 161 post offices H --> 147 post offices I --> 21 post offices J --> 46 post offices K --> 41 post offices L --> 175 post offices M --> 290 post offices N --> 153 post offices O --> 117 post offices P --> 183 post offices Q --> 14 post offices R --> 169 post offices S --> 274 post offices T --> 73 post offices U --> 18 post offices V --> 39 post offices W --> 202 post offices Y --> 1 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
  2. OAK BROOK 5 post offices
    3. --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
  3. OAK LAWN 10 post offices
    4. --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
  4. O FALLON 4 post offices
    5. --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
  5. OAK FOREST 5 post offices
    6. --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
  6. OAK PARK 11 post offices
    7. --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
  7. OAKDALE 1 post office
  8. OAKFORD 1 post office
  9. OAKLAND 2 post offices
    10. --4 PIKE ST, 61943, OAKLAND IL details
    --110 W STATE HIGHWAY 133, 61943, OAKLAND IL details
  10. OAKWOOD 1 post office
  11. OBLONG 2 post offices
    12. --207 N RANGE ST, 62449, OBLONG IL details
    --505 E MAIN ST, 62449, OBLONG IL details
  12. OCONEE 1 post office
  13. ODELL 1 post office
  14. ODIN 2 post offices
    15. --104 E KIRKWOOD ST, 62870, ODIN IL details
    --105 W POPLAR ST, 62870, ODIN IL details
  15. OGDEN 1 post office
  16. OGLESBY 2 post offices
    17. --203 W WALNUT ST, 61348, OGLESBY IL details
    --100 N COLUMBIA AVE, 61348, OGLESBY IL details
  17. OHIO 1 post office
  18. OHLMAN 1 post office
  19. OKAWVILLE 1 post office
  20. OLIVE BRANCH 1 post office
  21. OLMSTED 1 post office
  22. OLNEY 4 post offices
    23. --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
  23. OLYMPIA FIELDS 4 post offices
    24. --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
  24. OMAHA 1 post office
  25. ONARGA 2 post offices
    26. --120 W SEMINARY AVE, 60955, ONARGA IL details
    --102 N OAK ST, 60955, ONARGA IL details
  26. ONEIDA 1 post office
  27. OPDYKE 1 post office
  28. OQUAWKA 1 post office
  29. ORANGEVILLE 2 post offices
    30. --211 W HIGH ST, 61060, ORANGEVILLE IL details
    --456 HIGH ST, 61060, ORANGEVILLE IL details
  30. OREANA 1 post office
  31. OREGON 2 post offices
    32. --500 WASHINGTON ST, 61061, OREGON IL details
    --901 WASHINGTON ST, 61061, OREGON IL details
  32. ORIENT 1 post office
  33. ORION 2 post offices
    34. --1012 4TH ST, 61273, ORION IL details
    --1101 DIVISION ST, 61273, ORION IL details
  34. OSCO 1 post office
  35. OSWEGO 12 post offices
    36. --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
  36. OTTAWA 8 post offices
    37. --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
  37. OZARK 1 post office
  38. 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.

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