First three digits · Iowa
ZIP Codes Starting with
55 ZIP codes start with 510, sorted at the Sioux Falls, SD (SCF 570) sectional center (USPS labeling list L005, effective October 1, 2026) in Iowa: 55 residential ZIP codes across 10 counties (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 510 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 510, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 510 to the Sioux Falls, SD (SCF 570) facility. The last two digits pick the delivery area. By residents, the largest town names among the 510 ZIP codes are Le Mars, Orange City, Cherokee, Sergeant Bluff, Onawa and Hawarden.
The same facility sorts 6 prefixes, 191 ZIP codes in all: 510, 511, 512, 513, 570, 571.
Where are the 510 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 510
| County | ||||||
|---|---|---|---|---|---|---|
| 51001 | Akron | Plymouth County | 2,342 | 14 | $75k | $193k |
| 51002 | Alta | Buena Vista County | 2,787 | 25 | $71k | $167k |
| 51003 | Alton | Sioux County | 1,938 | 36 | $101k | $233k |
| 51004 | Anthon | Woodbury County | 858 | 10 | $44k | $115k |
| 51005 | Aurelia | Cherokee County | 1,561 | 17 | $76k | $169k |
| 51006 | Battle Creek | Ida County | 1,287 | 16 | $76k | $85k |
| 51007 | Bronson | Woodbury County | 691 | 20 | $117k | $241k |
| 51008 | Brunsville | Plymouth County | 210 | 745 | $45k | $129k |
| 51009 | Calumet | O'Brien County | 113 | 425 | $59k | $83k |
| 51010 | Castana | Monona County | 425 | 6 | $89k | $115k |
| 51011 | Chatsworth | Sioux County | 54 | 129 | $44k | – |
| 51012 | Cherokee | Cherokee County | 6,311 | 43 | $70k | $151k |
| 51014 | Cleghorn | Cherokee County | 549 | 10 | $70k | $133k |
| 51015 | Climbing Hill | Woodbury County | 45 | 35 | $88k | $138k |
| 51016 | Correctionville | Woodbury County | 1,080 | 10 | $52k | $89k |
| 51018 | Cushing | Ida County | 542 | 17 | $61k | $315k |
| 51019 | Danbury | Woodbury County | 448 | 5 | $75k | $106k |
| 51020 | Galva | Ida County | 632 | 11 | $80k | $93k |
| 51022 | Granville | O'Brien County | 960 | 13 | $97k | $175k |
| 51023 | Hawarden | Sioux County | 3,473 | 29 | $80k | $173k |
| 51024 | Hinton | Plymouth County | 2,081 | 24 | $114k | $348k |
| 51025 | Holstein | Ida County | 1,925 | 18 | $66k | $119k |
| 51026 | Hornick | Woodbury County | 910 | 8 | $81k | $211k |
| 51027 | Ireton | Sioux County | 1,280 | 14 | $101k | $227k |
| 51028 | Kingsley | Plymouth County | 2,191 | 18 | $78k | $220k |
| 51029 | Larrabee | Cherokee County | 261 | 10 | $86k | – |
| 51030 | Lawton | Woodbury County | 1,468 | 25 | $86k | $271k |
| 51031 | Le Mars | Plymouth County | 12,808 | 55 | $77k | $223k |
| 51033 | Linn Grove | Clay County | 421 | 7 | $61k | $182k |
| 51034 | Mapleton | Monona County | 1,674 | 14 | $66k | $121k |
| 51035 | Marcus | Cherokee County | 1,627 | 15 | $79k | $210k |
| 51036 | Maurice | Sioux County | 445 | 10 | $123k | $249k |
| 51037 | Meriden | Cherokee County | 327 | 14 | $59k | $235k |
| 51038 | Merrill | Plymouth County | 1,449 | 16 | $96k | $183k |
| 51039 | Moville | Woodbury County | 2,845 | 33 | $110k | $268k |
| 51040 | Onawa | Monona County | 3,500 | 27 | $71k | $152k |
| 51041 | Orange City | Sioux County | 7,324 | 103 | $84k | $277k |
| 51044 | Oto | Woodbury County | 165 | 5 | $90k | $84k |
| 51045 | Oyens | Plymouth County | 66 | 1,000 | $114k | $170k |
| 51046 | Paullina | O'Brien County | 1,326 | 14 | $84k | $160k |
| 51047 | Peterson | Clay County | 693 | 9 | $101k | $130k |
| 51048 | Pierson | Woodbury County | 435 | 12 | $83k | $103k |
| 51049 | Quimby | Cherokee County | 448 | 10 | $57k | $106k |
| 51050 | Remsen | Plymouth County | 2,962 | 21 | $93k | $220k |
| 51051 | Rodney | Monona County | 39 | 12 | $52k | $171k |
| 51052 | Salix | Woodbury County | 1,050 | 17 | $109k | $281k |
| 51053 | Schaller | Sac County | 1,016 | 14 | $73k | $92k |
| 51054 | Sergeant Bluff | Woodbury County | 5,583 | 144 | $120k | $302k |
| 51055 | Sloan | Woodbury County | 1,346 | 21 | $72k | $218k |
| 51056 | Smithland | Woodbury County | 346 | 10 | $103k | $157k |
| 51058 | Sutherland | O'Brien County | 1,096 | 13 | $63k | $133k |
| 51060 | Ute | Monona County | 706 | 12 | $53k | $99k |
| 51061 | Washta | Cherokee County | 389 | 8 | $49k | $78k |
| 51062 | Westfield | Plymouth County | 503 | 9 | – | $250k |
| 51063 | Whiting | Monona County | 1,072 | 15 | $81k | $160k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.