ZIP CodesZIP codes in Woodbury County, Iowa
Woodbury County, Iowa has 24 ZIP codes in this list, from 51004 to 51111. They cover 16 places, among them Sioux City, Anthon, Bronson and Climbing Hill.
Nothing in this county matches.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 51004 | Anthon | 84.2 | 42.387, -95.895 |
| 51007 | Bronson | 35.2 | 42.429, -96.199 |
| 51015 | Climbing Hill | 1.3 | 42.345, -96.088 |
| 51016 | Correctionville | 105 | 42.474, -95.780 |
| 51018 | Cushing | 32.6 | 42.464, -95.677 |
| 51019 | Danbury | 89.8 | 42.269, -95.726 |
| 51026 | Hornick | 110 | 42.290, -96.080 |
| 51030 | Lawton | 58.9 | 42.505, -96.219 |
| 51039 | Moville | 86.2 | 42.482, -96.066 |
| 51044 | Oto | 33.7 | 42.265, -95.862 |
| 51048 | Pierson | 36.9 | 42.533, -95.892 |
| 51052 | Salix | 61.7 | 42.331, -96.288 |
| 51054 | Sergeant Bluff | 38.7 | 42.402, -96.353 |
| 51055 | Sloan | 62.8 | 42.243, -96.231 |
| 51056 | Smithland | 33.6 | 42.241, -95.949 |
| 51101 | Sioux City | 1.2 | 42.497, -96.403 |
| 51102 | Sioux City | no area | 42.368, -96.318 |
| 51103 | Sioux City | 12.1 | 42.507, -96.430 |
| 51104 | Sioux City | 7.5 | 42.525, -96.400 |
| 51105 | Sioux City | 6.0 | 42.503, -96.383 |
| 51106 | Sioux City | 33.5 | 42.467, -96.353 |
| 51108 | Sioux City | 46.0 | 42.547, -96.362 |
| 51109 | Sioux City | 17.6 | 42.517, -96.480 |
| 51111 | Sioux City | 6.1 | 42.409, -96.371 |
The ZIP code areas of Woodbury County add up to about 1,001 square miles of land (2,592 sq km) as the Census Bureau draws them. The largest is 51026 (Hornick), with 110 square miles.
Places with more than one code here: Sioux City (9 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Anthon, IA 51004.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.