First three digits · Iowa
ZIP Codes Starting with
57 ZIP codes start with 515, sorted at the Omaha, NE (SCF 680) sectional center (USPS labeling list L005, effective October 1, 2026) in Iowa: 54 residential ZIP codes across 9 counties and 3 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 515 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 515, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 515 to the Omaha, NE (SCF 680) facility. The last two digits pick the delivery area. By residents, the largest town names among the 515 ZIP codes are Council Bluffs, Glenwood, Red Oak, Harlan, Missouri Valley and Carter Lake.
The same facility sorts 6 prefixes, 306 ZIP codes in all: 515, 516, 680, 681, 686, 687.
Where are the 515 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 515
| County | ||||||
|---|---|---|---|---|---|---|
| 51501 | Council Bluffs | Pottawattamie County | 34,618 | 1,446 | $60k | $152k |
| 51502 | Council Bluffs | Pottawattamie County | PO Box or unique | – | – | – |
| 51503 | Council Bluffs | Pottawattamie County | 37,972 | 312 | $79k | $262k |
| 51510 | Carter Lake | Pottawattamie County | 3,767 | 2,100 | $85k | $169k |
| 51520 | Arion | Crawford County | 243 | 11 | $61k | $147k |
| 51521 | Avoca | Pottawattamie County | 1,953 | 22 | $74k | $203k |
| 51523 | Blencoe | Monona County | 379 | 8 | $83k | $137k |
| 51525 | Carson | Pottawattamie County | 1,067 | 17 | $82k | $197k |
| 51526 | Crescent | Pottawattamie County | 1,664 | 38 | $95k | $334k |
| 51527 | Defiance | Shelby County | 362 | 9 | $65k | $123k |
| 51528 | Dow City | Crawford County | 674 | 9 | $63k | $118k |
| 51529 | Dunlap | Harrison County | 1,732 | 13 | $62k | $157k |
| 51530 | Earling | Shelby County | 809 | 15 | $74k | $164k |
| 51531 | Elk Horn | Shelby County | 889 | 33 | $59k | $132k |
| 51532 | Elliott | Montgomery County | 644 | 11 | $65k | $99k |
| 51533 | Emerson | Montgomery County | 844 | 11 | $69k | $137k |
| 51534 | Glenwood | Mills County | 8,874 | 88 | $94k | $247k |
| 51535 | Griswold | Cass County | 1,697 | 13 | $76k | $152k |
| 51536 | Hancock | Pottawattamie County | 613 | 12 | $102k | $163k |
| 51537 | Harlan | Shelby County | 6,382 | 39 | $65k | $167k |
| 51540 | Hastings | Mills County | 372 | 6 | $84k | $218k |
| 51541 | Henderson | Mills County | 273 | 6 | $92k | $164k |
| 51542 | Honey Creek | Pottawattamie County | 802 | 21 | $118k | $382k |
| 51543 | Kimballton | Audubon County | 478 | 22 | $72k | $163k |
| 51544 | Lewis | Cass County | 793 | 16 | $48k | $81k |
| 51545 | Little Sioux | Harrison County | 267 | 6 | $70k | $80k |
| 51546 | Logan | Harrison County | 3,114 | 26 | $87k | $208k |
| 51548 | McClelland | Pottawattamie County | 415 | 16 | $115k | $275k |
| 51549 | Macedonia | Pottawattamie County | 363 | 12 | $73k | $162k |
| 51550 | Magnolia | Harrison County | 169 | 295 | $78k | $106k |
| 51551 | Malvern | Mills County | 1,842 | 22 | $86k | $212k |
| 51552 | Marne | Cass County | 169 | 6 | $90k | $125k |
| 51553 | Minden | Pottawattamie County | 998 | 22 | $97k | $226k |
| 51554 | Mineola | Mills County | 194 | 58 | $103k | $392k |
| 51555 | Missouri Valley | Harrison County | 4,952 | 34 | $85k | $189k |
| 51556 | Modale | Harrison County | 266 | 5 | $61k | $140k |
| 51557 | Mondamin | Harrison County | 828 | 11 | $76k | $161k |
| 51558 | Moorhead | Monona County | 549 | 6 | $77k | $100k |
| 51559 | Neola | Pottawattamie County | 1,841 | 21 | $75k | $202k |
| 51560 | Oakland | Pottawattamie County | 1,772 | 19 | $76k | $177k |
| 51561 | Pacific Junction | Mills County | 1,039 | 19 | $113k | $389k |
| 51562 | Panama | Shelby County | 506 | 15 | $81k | $159k |
| 51563 | Persia | Harrison County | 629 | 12 | $69k | $209k |
| 51564 | Pisgah | Harrison County | 520 | 14 | $79k | $105k |
| 51565 | Portsmouth | Shelby County | 516 | 11 | $103k | $182k |
| 51566 | Red Oak | Montgomery County | 7,010 | 40 | $57k | $134k |
| 51570 | Shelby | Shelby County | 1,118 | 18 | $78k | $205k |
| 51571 | Silver City | Mills County | 902 | 20 | $95k | $221k |
| 51572 | Soldier | Monona County | 371 | 9 | $70k | $101k |
| 51573 | Stanton | Montgomery County | 979 | 17 | $86k | $134k |
| 51575 | Treynor | Pottawattamie County | 1,609 | 34 | $112k | $305k |
| 51576 | Underwood | Pottawattamie County | 1,769 | 38 | $111k | $305k |
| 51577 | Walnut | Pottawattamie County | 1,561 | 19 | $72k | $134k |
| 51578 | Westphalia | Shelby County | 116 | 1,657 | $77k | $98k |
| 51579 | Woodbine | Harrison County | 2,282 | 19 | $73k | $204k |
| 51591 | Red Oak | Montgomery County | PO Box or unique | – | – | – |
| 51593 | Harlan | Pottawattamie County | PO Box or unique | – | – | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.