First three digits · Illinois
ZIP Codes Starting with
82 ZIP codes start with 600, sorted at the Palatine, IL (SCF 600) sectional center (USPS labeling list L005, effective October 1, 2026) in Illinois: 65 residential ZIP codes across 3 counties and 17 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 600 mean?
The first digit, 6, is one of ten national areas (Illinois, Kansas, Missouri and Nebraska). The first three, 600, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 600 to the Palatine, IL (SCF 600) facility. The last two digits pick the delivery area. By residents, the largest town names among the 600 ZIP codes are Waukegan, Des Plaines, Arlington Heights, Palatine, Round Lake and Skokie.
The same facility sorts 4 prefixes, 173 ZIP codes in all: 600, 602, 610, 611.
Where are the 600 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 600
| County | ||||||
|---|---|---|---|---|---|---|
| 60001 | Alden | McHenry County | PO Box or unique | – | – | – |
| 60002 | Antioch | Lake County | 24,232 | 727 | $105k | $302k |
| 60004 | Arlington Heights | Cook County | 51,835 | 4,662 | $129k | $424k |
| 60005 | Arlington Heights | Cook County | 28,843 | 4,390 | $100k | $390k |
| 60006 | Arlington Heights | Cook County | PO Box or unique | – | – | – |
| 60007 | Elk Grove Village | Cook County | 32,592 | 1,800 | $94k | $347k |
| 60008 | Rolling Meadows | Cook County | 22,800 | 4,446 | $94k | $318k |
| 60009 | Elk Grove Village | Cook County | PO Box or unique | – | – | – |
| 60010 | Barrington | Cook County | 45,747 | 617 | $178k | $638k |
| 60011 | Barrington | Lake County | PO Box or unique | – | – | – |
| 60012 | Crystal Lake | McHenry County | 12,368 | 715 | $159k | $417k |
| 60013 | Cary | McHenry County | 26,694 | 1,846 | $121k | $314k |
| 60014 | Crystal Lake | McHenry County | 48,590 | 1,936 | $109k | $324k |
| 60015 | Deerfield | Lake County | 28,096 | 2,061 | $183k | $606k |
| 60016 | Des Plaines | Cook County | 60,898 | 5,023 | $87k | $320k |
| 60017 | Des Plaines | Cook County | PO Box or unique | – | – | – |
| 60018 | Des Plaines | Cook County | 27,952 | 1,686 | $91k | $318k |
| 60019 | Des Plaines | Cook County | PO Box or unique | – | – | – |
| 60020 | Fox Lake | Lake County | 10,970 | 2,329 | $74k | $226k |
| 60021 | Fox River Grove | McHenry County | 4,996 | 2,438 | $119k | $293k |
| 60022 | Glencoe | Cook County | 8,352 | 2,203 | $250k+ | $1.39M |
| 60025 | Glenview | Cook County | 41,689 | 3,974 | $127k | $521k |
| 60026 | Glenview | Cook County | 14,069 | 3,452 | $138k | $694k |
| 60029 | Golf | Cook County | 518 | 1,156 | $243k | $955k |
| 60030 | Grayslake | Lake County | 35,792 | 1,337 | $105k | $292k |
| 60031 | Gurnee | Lake County | 37,107 | 1,951 | $111k | $335k |
| 60033 | Harvard | McHenry County | 12,999 | 111 | $69k | $203k |
| 60034 | Hebron | McHenry County | 2,033 | 66 | $87k | $254k |
| 60035 | Highland Park | Lake County | 30,398 | 2,400 | $168k | $607k |
| 60037 | Fort Sheridan | Lake County | PO Box or unique | – | – | – |
| 60038 | Palatine | Cook County | PO Box or unique | – | – | – |
| 60039 | Crystal Lake | McHenry County | PO Box or unique | – | – | – |
| 60040 | Highwood | Lake County | 5,301 | 6,929 | $108k | $405k |
| 60041 | Ingleside | Lake County | 9,024 | 945 | $93k | $245k |
| 60042 | Island Lake | Lake County | 8,347 | 1,828 | $100k | $259k |
| 60043 | Kenilworth | Cook County | 2,503 | 4,124 | $250k+ | $1.56M |
| 60044 | Lake Bluff | Lake County | 10,312 | 1,520 | $135k | $600k |
| 60045 | Lake Forest | Lake County | 21,074 | 989 | $233k | $924k |
| 60046 | Lake Villa | Lake County | 34,613 | 1,508 | $126k | $308k |
| 60047 | Lake Zurich | Lake County | 44,240 | 1,269 | $176k | $541k |
| 60048 | Libertyville | Lake County | 29,124 | 1,026 | $174k | $551k |
| 60050 | McHenry | McHenry County | 31,781 | 1,203 | $89k | $264k |
| 60051 | McHenry | McHenry County | 24,621 | 742 | $101k | $278k |
| 60053 | Morton Grove | Cook County | 24,619 | 4,867 | $111k | $389k |
| 60055 | Palatine | Cook County | PO Box or unique | – | – | – |
| 60056 | Mount Prospect | Cook County | 55,818 | 5,137 | $102k | $397k |
| 60060 | Mundelein | Lake County | 37,344 | 1,608 | $110k | $327k |
| 60061 | Vernon Hills | Lake County | 27,974 | 3,347 | $125k | $417k |
| 60062 | Northbrook | Cook County | 41,406 | 2,190 | $143k | $633k |
| 60064 | North Chicago | Lake County | 14,884 | 2,815 | $49k | $152k |
| 60065 | Northbrook | Cook County | PO Box or unique | – | – | – |
| 60067 | Palatine | Cook County | 38,204 | 2,936 | $125k | $427k |
| 60068 | Park Ridge | Cook County | 38,650 | 5,287 | $143k | $552k |
| 60069 | Lincolnshire | Lake County | 8,502 | 1,434 | $163k | $612k |
| 60070 | Prospect Heights | Cook County | 15,496 | 3,897 | $85k | $343k |
| 60071 | Richmond | McHenry County | 3,851 | 155 | $74k | $331k |
| 60072 | Ringwood | McHenry County | 870 | 90 | $119k | $414k |
| 60073 | Round Lake | Lake County | 62,868 | 3,404 | $99k | $231k |
| 60074 | Palatine | Cook County | 36,460 | 5,133 | $84k | $316k |
| 60075 | Russell | Lake County | 129 | 796 | – | – |
| 60076 | Skokie | Cook County | 32,953 | 6,417 | $114k | $396k |
| 60077 | Skokie | Cook County | 28,501 | 6,736 | $79k | $356k |
| 60078 | Palatine | Cook County | PO Box or unique | – | – | – |
| 60079 | Waukegan | Lake County | PO Box or unique | – | – | – |
| 60081 | Spring Grove | McHenry County | 9,088 | 461 | $117k | $355k |
| 60082 | Techny | Cook County | PO Box or unique | – | – | – |
| 60083 | Wadsworth | Lake County | 9,981 | 378 | $123k | $323k |
| 60084 | Wauconda | Lake County | 17,192 | 1,224 | $110k | $303k |
| 60085 | Waukegan | Lake County | 72,341 | 4,896 | $67k | $177k |
| 60086 | North Chicago | Lake County | PO Box or unique | – | – | – |
| 60087 | Waukegan | Lake County | 27,293 | 2,105 | $77k | $207k |
| 60088 | Great Lakes | Lake County | 14,400 | 6,008 | $66k | – |
| 60089 | Buffalo Grove | Lake County | 42,872 | 4,356 | $129k | $412k |
| 60090 | Wheeling | Cook County | 38,298 | 4,263 | $85k | $265k |
| 60091 | Wilmette | Cook County | 27,333 | 5,119 | $190k | $807k |
| 60093 | Winnetka | Cook County | 19,867 | 2,372 | $250k+ | $1.18M |
| 60094 | Palatine | Cook County | PO Box or unique | – | – | – |
| 60095 | Palatine | Cook County | PO Box or unique | – | – | – |
| 60096 | Winthrop Harbor | Lake County | 6,527 | 1,378 | $96k | $249k |
| 60097 | Wonder Lake | McHenry County | 11,983 | 747 | $93k | $230k |
| 60098 | Woodstock | McHenry County | 33,130 | 316 | $91k | $277k |
| 60099 | Zion | Lake County | 30,881 | 1,367 | $66k | $197k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.