ZIP CodesIllinois ZIP codes: every city, town and county
1,575 ZIP codes of Illinois (IL), listed by place and by county. Every code of the state starts with 6.
Illinois at a glance
- ZIP codes in this list
- 1,575
- Lowest and highest
- 60001 to 62999
- First digit
- 6
- Three-digit prefixes
- 29, from 600 to 629
- Counties or equivalent areas
- 102
- Places named
- 1,286
- Most codes for one place
- Chicago (84)
- Largest ZIP code area
- 61944 Paris, 263 sq mi
By county
- Adams County 17
- Alexander County 7
- Bond County 7
- Boone County 5
- Brown County 3
- Bureau County 24
- Calhoun County 8
- Carroll County 7
- Cass County 6
- Champaign County 33
- Christian County 13
- Clark County 6
- Clay County 6
- Clinton County 13
- Coles County 7
- Cook County 213
- Crawford County 8
- Cumberland County 5
- De Witt County 8
- DeKalb County 14
- Douglas County 9
- DuPage County 53
- Edgar County 8
- Edwards County 5
- Effingham County 10
- Fayette County 9
- Ford County 9
- Franklin County 16
- Fulton County 20
- Gallatin County 6
- Greene County 10
- Grundy County 9
- Hamilton County 5
- Hancock County 16
- Hardin County 4
- Henderson County 8
- Henry County 16
- Iroquois County 24
- Jackson County 16
- Jasper County 7
- Jefferson County 12
- Jersey County 8
- Jo Daviess County 9
- Johnson County 10
- Kane County 29
- Kankakee County 16
- Kendall County 8
- Knox County 17
- LaSalle County 24
- Lake County 33
- Lawrence County 4
- Lee County 14
- Livingston County 17
- Logan County 14
- Macon County 18
- Macoupin County 19
- Madison County 28
- Marion County 11
- Marshall County 9
- Mason County 9
- Massac County 3
- McDonough County 11
- McHenry County 20
- McLean County 32
- Menard County 6
- Mercer County 12
- Monroe County 7
- Montgomery County 16
- Morgan County 11
- Moultrie County 5
- Ogle County 16
- Peoria County 44
- Perry County 5
- Piatt County 10
- Pike County 15
- Pope County 3
- Pulaski County 9
- Putnam County 7
- Randolph County 15
- Richland County 6
- Rock Island County 21
- Saline County 7
- Sangamon County 54
- Schuyler County 6
- Scott County 4
- Shelby County 13
- St. Clair County 30
- Stark County 7
- Stephenson County 14
- Tazewell County 18
- Union County 7
- Vermilion County 24
- Wabash County 5
- Warren County 8
- Washington County 10
- Wayne County 11
- White County 10
- Whiteside County 12
- Will County 33
- Williamson County 11
- Winnebago County 28
- Woodford County 10
By city or town
No place in Illinois matches. Try fewer letters, or the look-up for the whole country.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. Not connected with the United States Postal Service; for mailing, confirm the address with USPS.