First three digits · Iowa
ZIP Codes Starting with
47 ZIP codes start with 527, sorted at the Quad Cities, IL (SCF 612) sectional center (USPS labeling list L005, effective October 1, 2026) in Iowa: 44 residential ZIP codes across 6 counties and 3 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 527 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 527, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 527 to the Quad Cities, IL (SCF 612) facility. The last two digits pick the delivery area. By residents, the largest town names among the 527 ZIP codes are Bettendorf, Muscatine, Clinton, Eldridge, De Witt and Le Claire.
The same facility sorts 4 prefixes, 139 ZIP codes in all: 526, 527, 528, 612.
Where are the 527 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 527
| County | ||||||
|---|---|---|---|---|---|---|
| 52701 | Andover | Clinton County | 124 | 197 | – | $119k |
| 52720 | Atalissa | Muscatine County | 964 | 23 | $74k | $276k |
| 52721 | Bennett | Cedar County | 809 | 20 | $82k | $201k |
| 52722 | Bettendorf | Scott County | 41,264 | 1,568 | $102k | $312k |
| 52726 | Blue Grass | Scott County | 5,160 | 157 | $104k | $276k |
| 52727 | Bryant | Clinton County | 398 | 16 | $103k | $258k |
| 52728 | Buffalo | Scott County | 984 | 320 | $69k | $121k |
| 52729 | Calamus | Clinton County | 886 | 22 | $88k | $179k |
| 52730 | Camanche | Clinton County | 4,776 | 126 | $65k | $177k |
| 52731 | Charlotte | Clinton County | 867 | 17 | $88k | $156k |
| 52732 | Clinton | Clinton County | 25,880 | 236 | $61k | $122k |
| 52733 | Clinton | Clinton County | PO Box or unique | – | – | – |
| 52734 | Clinton | Clinton County | PO Box or unique | – | – | – |
| 52736 | Clinton | Clinton County | PO Box or unique | – | – | – |
| 52737 | Columbus City | Louisa County | 323 | 1,346 | $90k | $112k |
| 52738 | Columbus Junction | Louisa County | 3,398 | 28 | $80k | $146k |
| 52739 | Conesville | Louisa County | 788 | 24 | $74k | $98k |
| 52742 | De Witt | Clinton County | 7,284 | 62 | $98k | $261k |
| 52745 | Dixon | Scott County | 443 | 17 | $69k | $221k |
| 52746 | Donahue | Scott County | 1,240 | 47 | $108k | $337k |
| 52747 | Durant | Muscatine County | 2,160 | 72 | $82k | $198k |
| 52748 | Eldridge | Scott County | 9,594 | 239 | $108k | $327k |
| 52749 | Fruitland | Muscatine County | 1,049 | 490 | $103k | $218k |
| 52750 | Goose Lake | Clinton County | 654 | 22 | $93k | $167k |
| 52751 | Grand Mound | Clinton County | 976 | 19 | $82k | $173k |
| 52752 | Grandview | Louisa County | 413 | 1,067 | $50k | $144k |
| 52753 | Le Claire | Scott County | 6,020 | 243 | $104k | $329k |
| 52754 | Letts | Muscatine County | 1,533 | 21 | $104k | $194k |
| 52755 | Lone Tree | Johnson County | 2,092 | 36 | $102k | $243k |
| 52756 | Long Grove | Scott County | 1,982 | 45 | $116k | $358k |
| 52757 | Low Moor | Clinton County | 242 | 494 | $63k | $118k |
| 52758 | McCausland | Scott County | 298 | 356 | $63k | $204k |
| 52759 | Montpelier | Muscatine County | 167 | 711 | $71k | $257k |
| 52760 | Moscow | Muscatine County | 992 | 45 | $86k | $143k |
| 52761 | Muscatine | Muscatine County | 29,474 | 165 | $62k | $171k |
| 52765 | New Liberty | Scott County | 427 | 13 | $107k | $221k |
| 52766 | Nichols | Muscatine County | 677 | 14 | $62k | $128k |
| 52767 | Pleasant Valley | Scott County | 386 | 282 | – | $392k |
| 52768 | Princeton | Scott County | 1,352 | 42 | $113k | $291k |
| 52769 | Stockton | Scott County | 698 | 17 | $89k | $333k |
| 52771 | Teeds Grove | Clinton County | 56 | 33 | – | – |
| 52772 | Tipton | Cedar County | 5,348 | 41 | $81k | $226k |
| 52773 | Walcott | Scott County | 2,389 | 43 | $86k | $214k |
| 52774 | Welton | Clinton County | 101 | 338 | $71k | $119k |
| 52776 | West Liberty | Muscatine County | 5,090 | 58 | $80k | $204k |
| 52777 | Wheatland | Clinton County | 1,389 | 25 | $60k | $159k |
| 52778 | Wilton | Cedar County | 3,632 | 48 | $83k | $202k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.