First three digits · Iowa
ZIP Codes Starting with
28 ZIP codes start with 508, sorted at the Des Moines, IA (SCF 500) sectional center (USPS labeling list L005, effective October 1, 2026) in Iowa: 28 residential ZIP codes across 7 counties (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 508 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 508, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 508 to the Des Moines, IA (SCF 500) facility. The last two digits pick the delivery area. By residents, the largest town names among the 508 ZIP codes are Creston, Mount Ayr, Greenfield, Corning, Lenox and Bedford.
The same facility sorts 9 prefixes, 450 ZIP codes in all: 500, 501, 502, 503, 505, 508, 509, 514, 525.
Where are the 508 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 508
| County | ||||||
|---|---|---|---|---|---|---|
| 50801 | Creston | Union County | 9,034 | 44 | $58k | $125k |
| 50830 | Afton | Union County | 1,846 | 15 | $61k | $113k |
| 50831 | Arispe | Union County | 22 | 98 | $96k | – |
| 50833 | Bedford | Taylor County | 2,077 | 10 | $61k | $113k |
| 50835 | Benton | Ringgold County | 69 | 5 | $58k | – |
| 50836 | Blockton | Taylor County | 304 | 3 | $82k | $153k |
| 50837 | Bridgewater | Adair County | 282 | 5 | $63k | $117k |
| 50839 | Carbon | Adams County | 46 | 92 | $49k | – |
| 50840 | Clearfield | Taylor County | 552 | 12 | $63k | $180k |
| 50841 | Corning | Adams County | 2,340 | 10 | $67k | $117k |
| 50842 | Cromwell | Union County | 99 | 384 | $60k | $105k |
| 50843 | Cumberland | Cass County | 540 | 7 | $56k | $105k |
| 50845 | Diagonal | Ringgold County | 831 | 7 | $67k | $100k |
| 50846 | Fontanelle | Adair County | 1,276 | 13 | $74k | $109k |
| 50847 | Grant | Montgomery County | 35 | 154 | $68k | $40k |
| 50848 | Gravity | Taylor County | 256 | 5 | $68k | $159k |
| 50849 | Greenfield | Adair County | 2,374 | 21 | $65k | $149k |
| 50851 | Lenox | Taylor County | 2,193 | 17 | $71k | $121k |
| 50853 | Massena | Cass County | 716 | 10 | $65k | $169k |
| 50854 | Mount Ayr | Ringgold County | 2,391 | 17 | $81k | $162k |
| 50857 | Nodaway | Adams County | 156 | 3 | $64k | $163k |
| 50858 | Orient | Adair County | 848 | 11 | $71k | $150k |
| 50859 | Prescott | Adams County | 676 | 8 | $77k | $164k |
| 50860 | Redding | Ringgold County | 94 | 2 | $45k | $47k |
| 50861 | Shannon City | Union County | 311 | 8 | $63k | – |
| 50862 | Sharpsburg | Taylor County | 123 | 6 | $62k | $109k |
| 50863 | Tingley | Ringgold County | 194 | 7 | $66k | $94k |
| 50864 | Villisca | Montgomery County | 1,662 | 11 | $70k | $110k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.