First three digits · Iowa
ZIP Codes Starting with
23 ZIP codes start with 513, sorted at the Sioux Falls, SD (SCF 570) sectional center (USPS labeling list L005, effective October 1, 2026) in Iowa: 23 residential ZIP codes across 6 counties (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 513 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 513, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 513 to the Sioux Falls, SD (SCF 570) facility. The last two digits pick the delivery area. By residents, the largest town names among the 513 ZIP codes are Spencer, Spirit Lake, Estherville, Milford, Hartley and Lake Park.
The same facility sorts 6 prefixes, 191 ZIP codes in all: 510, 511, 512, 513, 570, 571.
Where are the 513 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 513
| County | ||||||
|---|---|---|---|---|---|---|
| 51301 | Spencer | Clay County | 12,638 | 80 | $63k | $188k |
| 51331 | Arnolds Park | Dickinson County | 935 | 583 | $89k | $449k |
| 51333 | Dickens | Clay County | 374 | 6 | $111k | $196k |
| 51334 | Estherville | Emmet County | 6,960 | 37 | $58k | $112k |
| 51338 | Everly | Clay County | 852 | 12 | $58k | $125k |
| 51340 | Fostoria | Clay County | 75 | 625 | $90k | $134k |
| 51341 | Gillett Grove | Clay County | 40 | 117 | – | $61k |
| 51342 | Graettinger | Palo Alto County | 1,385 | 17 | $85k | $109k |
| 51343 | Greenville | Clay County | 172 | 6 | $61k | $99k |
| 51345 | Harris | Osceola County | 347 | 6 | $54k | $142k |
| 51346 | Hartley | O'Brien County | 2,247 | 15 | $72k | $157k |
| 51347 | Lake Park | Dickinson County | 1,470 | 18 | $83k | $202k |
| 51350 | Melvin | Osceola County | 383 | 9 | $77k | $79k |
| 51351 | Milford | Dickinson County | 4,988 | 46 | $74k | $273k |
| 51354 | Ocheyedan | Osceola County | 965 | 11 | $73k | $115k |
| 51355 | Okoboji | Dickinson County | 1,048 | 413 | $72k | $421k |
| 51357 | Royal | Clay County | 910 | 24 | $68k | $119k |
| 51358 | Ruthven | Palo Alto County | 1,213 | 15 | $65k | $151k |
| 51360 | Spirit Lake | Dickinson County | 8,653 | 82 | $76k | $272k |
| 51363 | Superior | Dickinson County | 111 | 262 | $76k | $83k |
| 51364 | Terril | Dickinson County | 803 | 13 | $67k | $157k |
| 51365 | Wallingford | Emmet County | 416 | 19 | $72k | $129k |
| 51366 | Webb | Clay County | 245 | 4 | $88k | $131k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.