First three digits · Nebraska
ZIP Codes Starting with
66 ZIP codes start with 688, sorted at the Lincoln, NE (SCF 683) sectional center (USPS labeling list L005, effective October 1, 2026) in Nebraska: 64 residential ZIP codes across 13 counties and 2 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 688 mean?
The first digit, 6, is one of ten national areas (Illinois, Kansas, Missouri and Nebraska). The first three, 688, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 688 to the Lincoln, NE (SCF 683) facility. The last two digits pick the delivery area. By residents, the largest town names among the 688 ZIP codes are Grand Island, Kearney, Lexington, Aurora, Broken Bow and Central City.
The same facility sorts 5 prefixes, 278 ZIP codes in all: 683, 684, 685, 688, 689.
Where are the 688 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 688
| County | ||||||
|---|---|---|---|---|---|---|
| 68801 | Grand Island | Hall County | 30,824 | 343 | $64k | $204k |
| 68802 | Grand Island | Hall County | PO Box or unique | – | – | – |
| 68803 | Grand Island | Hall County | 25,534 | 294 | $74k | $244k |
| 68810 | Alda | Hall County | 862 | 41 | $64k | $130k |
| 68812 | Amherst | Buffalo County | 642 | 5 | $70k | $229k |
| 68813 | Anselmo | Custer County | 518 | 1 | $73k | $263k |
| 68814 | Ansley | Custer County | 984 | 5 | $73k | $156k |
| 68815 | Arcadia | Valley County | 652 | 4 | $70k | $162k |
| 68816 | Archer | Merrick County | 137 | 4 | $62k | $171k |
| 68817 | Ashton | Sherman County | 340 | 4 | $74k | $138k |
| 68818 | Aurora | Hamilton County | 5,680 | 31 | $81k | $264k |
| 68820 | Boelus | Howard County | 343 | 9 | $82k | $114k |
| 68821 | Brewster | Blaine County | 89 | 1 | – | $184k |
| 68822 | Broken Bow | Custer County | 4,335 | 11 | $68k | $155k |
| 68823 | Burwell | Garfield County | 1,936 | 2 | $62k | $174k |
| 68824 | Cairo | Hall County | 1,562 | 17 | $78k | $220k |
| 68825 | Callaway | Custer County | 995 | 3 | $64k | $176k |
| 68826 | Central City | Merrick County | 3,944 | 27 | $75k | $172k |
| 68827 | Chapman | Merrick County | 761 | 13 | $89k | $430k |
| 68828 | Comstock | Custer County | 204 | 3 | $62k | $88k |
| 68831 | Dannebrog | Howard County | 705 | 10 | $69k | $202k |
| 68832 | Doniphan | Hall County | 2,126 | 21 | $97k | $250k |
| 68833 | Dunning | Blaine County | 148 | 0 | $63k | $104k |
| 68834 | Eddyville | Dawson County | 227 | 2 | $79k | $153k |
| 68835 | Elba | Howard County | 459 | 5 | $52k | $139k |
| 68836 | Elm Creek | Buffalo County | 1,908 | 13 | $87k | $225k |
| 68837 | Elyria | Valley County | 109 | 4 | $81k | – |
| 68838 | Farwell | Howard County | 150 | 3 | $104k | $156k |
| 68840 | Gibbon | Buffalo County | 2,624 | 17 | $76k | $208k |
| 68841 | Giltner | Hamilton County | 649 | 10 | $77k | $222k |
| 68842 | Greeley | Greeley County | 538 | 3 | $58k | $104k |
| 68843 | Hampton | Hamilton County | 1,032 | 13 | $93k | $250k |
| 68844 | Hazard | Sherman County | 328 | 7 | $67k | $318k |
| 68845 | Kearney | Buffalo County | 20,536 | 166 | $77k | $282k |
| 68846 | Hordville | Hamilton County | 283 | 9 | $68k | $96k |
| 68847 | Kearney | Buffalo County | 18,354 | 167 | $74k | $238k |
| 68848 | Kearney | Buffalo County | PO Box or unique | – | – | – |
| 68849 | Kearney | Buffalo County | 1,385 | 6,295 | – | – |
| 68850 | Lexington | Dawson County | 12,428 | 46 | $69k | $161k |
| 68852 | Litchfield | Sherman County | 572 | 5 | $76k | $158k |
| 68853 | Loup City | Sherman County | 1,333 | 7 | $55k | $135k |
| 68854 | Marquette | Hamilton County | 708 | 10 | $92k | $305k |
| 68855 | Mason City | Custer County | 400 | 2 | $79k | $235k |
| 68856 | Merna | Custer County | 715 | 6 | $73k | $190k |
| 68858 | Miller | Buffalo County | 328 | 5 | $82k | $191k |
| 68859 | North Loup | Valley County | 357 | 4 | $50k | $102k |
| 68860 | Oconto | Custer County | 301 | 2 | $96k | $73k |
| 68861 | Odessa | Buffalo County | 138 | 157 | $40k | $140k |
| 68862 | Ord | Valley County | 2,977 | 10 | $60k | $163k |
| 68863 | Overton | Dawson County | 1,410 | 12 | $101k | $137k |
| 68864 | Palmer | Merrick County | 958 | 5 | $83k | $184k |
| 68865 | Phillips | Hamilton County | 941 | 16 | $110k | $297k |
| 68866 | Pleasanton | Buffalo County | 1,168 | 11 | $95k | $262k |
| 68869 | Ravenna | Buffalo County | 2,165 | 10 | $65k | $169k |
| 68870 | Riverdale | Buffalo County | 506 | 11 | $87k | $222k |
| 68871 | Rockville | Sherman County | 268 | 4 | $53k | $69k |
| 68872 | Saint Libory | Howard County | 992 | 16 | $85k | $208k |
| 68873 | Saint Paul | Howard County | 3,785 | 22 | $75k | $215k |
| 68874 | Sargent | Custer County | 821 | 3 | $60k | $88k |
| 68875 | Scotia | Greeley County | 716 | 6 | $62k | $158k |
| 68876 | Shelton | Buffalo County | 1,910 | 21 | $82k | $164k |
| 68878 | Sumner | Dawson County | 463 | 4 | $92k | $99k |
| 68879 | Taylor | Loup County | 377 | 2 | $81k | $125k |
| 68881 | Westerville | Custer County | 26 | 1 | – | – |
| 68882 | Wolbach | Greeley County | 401 | 3 | $68k | $78k |
| 68883 | Wood River | Hall County | 2,483 | 13 | $91k | $206k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.