First three digits · Wisconsin
ZIP Codes Starting with
47 ZIP codes start with 545, sorted at the Green Bay, WI (SCF 541) sectional center (USPS labeling list L005, effective October 1, 2026) in Wisconsin: 45 residential ZIP codes across 8 counties and 2 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 545 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 545, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 545 to the Green Bay, WI (SCF 541) facility. The last two digits pick the delivery area. By residents, the largest town names among the 545 ZIP codes are Rhinelander, Eagle River, Minocqua, Woodruff, Phillips and Park Falls.
The same facility sorts 5 prefixes, 231 ZIP codes in all: 541, 542, 543, 544, 545.
Where are the 545 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 545
| County | ||||||
|---|---|---|---|---|---|---|
| 54501 | Rhinelander | Oneida County | 21,405 | 58 | $68k | $204k |
| 54511 | Argonne | Forest County | 1,393 | 5 | $67k | $173k |
| 54512 | Boulder Junction | Vilas County | 1,461 | 18 | $75k | $295k |
| 54513 | Brantwood | Price County | 431 | 4 | $64k | $182k |
| 54514 | Butternut | Ashland County | 1,827 | 8 | $71k | $165k |
| 54515 | Catawba | Price County | 639 | 8 | $60k | $111k |
| 54517 | Clam Lake | Ashland County | 167 | 2 | $74k | $423k |
| 54519 | Conover | Vilas County | 1,309 | 15 | $60k | $272k |
| 54520 | Crandon | Forest County | 3,764 | 31 | $60k | $170k |
| 54521 | Eagle River | Vilas County | 8,551 | 45 | $74k | $305k |
| 54524 | Fifield | Price County | 663 | 11 | $41k | $167k |
| 54525 | Gile | Iron County | 318 | 340 | $74k | $81k |
| 54526 | Glen Flora | Rusk County | 644 | 5 | $53k | $130k |
| 54527 | Glidden | Ashland County | 932 | 5 | $56k | $121k |
| 54529 | Harshaw | Oneida County | 1,220 | 17 | $72k | $268k |
| 54530 | Hawkins | Rusk County | 758 | 6 | $54k | $114k |
| 54531 | Hazelhurst | Oneida County | 1,385 | 22 | $84k | $345k |
| 54532 | Heafford Junction | Lincoln County | PO Box or unique | – | – | – |
| 54534 | Hurley | Iron County | 2,393 | 18 | $54k | $124k |
| 54536 | Iron Belt | Iron County | 154 | 4 | $58k | $67k |
| 54537 | Kennan | Price County | 601 | 7 | $60k | $122k |
| 54538 | Lac Du Flambeau | Vilas County | 3,025 | 29 | $51k | $320k |
| 54539 | Lake Tomahawk | Oneida County | 1,356 | 24 | $63k | $282k |
| 54540 | Land O Lakes | Vilas County | 971 | 12 | $69k | $276k |
| 54541 | Laona | Forest County | 1,561 | 11 | $63k | $194k |
| 54542 | Long Lake | Forest County | 702 | 3 | $47k | $122k |
| 54543 | McNaughton | Oneida County | PO Box or unique | – | – | – |
| 54545 | Manitowish Waters | Vilas County | 947 | 20 | $81k | $666k |
| 54546 | Mellen | Ashland County | 1,332 | 6 | $70k | $142k |
| 54547 | Mercer | Iron County | 1,549 | 7 | $64k | $307k |
| 54548 | Minocqua | Oneida County | 5,676 | 57 | $70k | $336k |
| 54550 | Montreal | Iron County | 768 | 28 | $65k | $112k |
| 54552 | Park Falls | Price County | 4,292 | 12 | $61k | $151k |
| 54554 | Phelps | Vilas County | 1,148 | 14 | $64k | $247k |
| 54555 | Phillips | Price County | 4,728 | 13 | $59k | $187k |
| 54556 | Prentice | Price County | 1,161 | 11 | $54k | $145k |
| 54557 | Presque Isle | Vilas County | 1,042 | 12 | $74k | $395k |
| 54558 | Saint Germain | Vilas County | 2,262 | 52 | $60k | $261k |
| 54559 | Saxon | Iron County | 837 | 7 | $70k | $159k |
| 54560 | Sayner | Vilas County | 561 | 18 | $62k | $246k |
| 54561 | Star Lake | Vilas County | 55 | 1 | – | $332k |
| 54562 | Three Lakes | Oneida County | 2,038 | 14 | $57k | $326k |
| 54563 | Tony | Rusk County | 811 | 19 | $82k | $206k |
| 54564 | Tripoli | Oneida County | 393 | 2 | $57k | $184k |
| 54565 | Upson | Iron County | 38 | 0 | $38k | $171k |
| 54566 | Wabeno | Forest County | 1,453 | 11 | $56k | $209k |
| 54568 | Woodruff | Vilas County | 4,854 | 68 | $73k | $281k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.