Floyd County, IA ZIP codes
There are 7 ZIP codes in Floyd County, IA, in 7 towns, from 50435 to 50653. The largest are 50616 (Charles City), 50458 (Nora Springs) and 50468 (Rockford). 2 more cross into it from neighbouring counties: 50658 and 50636.
The county seat is Charles City.
- ZIP codes
- 7
- Partly in it
- 2 more
- Towns
- 7
- County seat
- Charles City
- County FIPS
19067- State
- Iowa
- Population
- 15,328
- Median household income
- $68,557
- Land area
- 501 sq mi
- Area code
- 641
Floyd County ZIP codes by town
- Charles City (county seat)
- 50616
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
ZIP codes partly in Floyd County
These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Floyd County.
- 50636 Greene · mostly in Butler County
- 50658 Nashua · mostly in Chickasaw County
Map of Floyd County ZIP codes
The ZIP codes of Floyd County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Floyd County in numbers
About 15,328 people live in Floyd County, in 6,503 households, the 49th most populous of Iowa's 99 counties. The median household income is $68,557 a year, 9% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $143,500 (31% below the Iowa median), and median gross rent is $745 a month. The median age is 43.5; 18.3% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 19 minutes.
| Population | 15,328 |
|---|---|
| Households | 6,503 |
| Median age | 43.5 |
| Median household income | $68,557 |
| Median home value | $143,500 |
| Median gross rent | $745 |
| Bachelor's degree or higher | 18.3% |
| Mean commute | 18.9 min |
| Population density | 31 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Floyd County
| Town | ZIP codes | Population |
|---|---|---|
| Charles City | 1 | 7,232 |
| Nora Springs | 1 | 1,363 |
| Rockford | 1 | 839 |
| Rudd | 1 | 481 |
| Floyd | 1 | 315 |
| Marble Rock | 1 | 191 |
| Colwell | 1 | 38 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Floyd County.
- Cerro Gordo County (10)
- Bremer County (8)
- Butler County (11)
- Chickasaw County (7)
- Mitchell County (8)
- Franklin County (11)
Not sure you are in Floyd County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Floyd County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
50435 | Floyd , IA | Standard | 713 | $71,156 | $145,800 |
50458 | Nora Springs , IA | Standard | 2,094 | $99,643 | $157,500 |
50468 | Rockford , IA | Standard | 1,617 | $73,403 | $173,700 |
50471 | Rudd , IA | Standard | 740 | $93,542 | $132,500 |
50616 | Charles City , IA | Standard | 9,358 | $64,830 | $140,600 |
50620 | Colwell , IA | Standard | 36 | — | $102,800 |
50653 | Marble Rock , IA | Standard | 486 | $79,250 | $163,300 |
Cite this page
zipcodes.pro. “Floyd County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ia/county/floyd
Underlying data is public domain or openly licensed — sources, vintages and licences.