| ZIP Codes: | 7 ZIP Codes (7 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 641 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:53:09 PM |
| Population: | 15,044 [See All] |
| FIPS: | 19067 |
| Land Area: | 469 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 43.1011, -92.8221 |
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15,044 residents live across 7 ZIPs covering 469 sq mi, served by 7 distinct USPS-recognized cities.
Population moved from 16,194 to 15,044 from 2014 to 2024 — a -7.1% change. 3 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 50458 (Nora Springs, $99,643 median) and poorest ZIP 50616 (Charles City, $64,830) are 17.2 miles apart — a 1.5× income gap across local geography.
Median home values vary 1.3× across this county — from $132,500 in 50471 (Rudd) to $173,700 in 50468 (Rockford).
Density varies 6× across the county — from 9 people/sq mi in 50653 (Marble Rock) to 55 in 50616 (Charles City).
Educational attainment ranges from 9.1% bachelor's+ in 50435 (Floyd) to 25.2% in 50458 (Nora Springs) — the breadth of educational profiles across the area.
Within Iowa, this is the #49 most populous of 99 counties and ranks #25 for median household income .
Weighted by population, the typical household earns about $72,794 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.1% of adults age 25+ hold a bachelor's degree or higher (1,998 of 10,438 reporting).
7 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
Floyd County lost 7.1% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 50616 | Charles City | Standard | 9,358 | $64,830 | 168.9 | -10.9% |
| 50458 | Nora Springs | Standard | 2,094 | $99,643 | 66.9 | -3.0% |
| 50468 | Rockford | Standard | 1,617 | $73,403 | 92.9 | 0.4% |
| 50471 | Rudd | Standard | 740 | $93,542 | 45.8 | 11.6% |
| 50435 | Floyd | Standard | 713 | $71,156 | 38.0 | 30.1% |
| 50653 | Marble Rock | Standard | 486 | $79,250 | 56.6 | -27.1% |
| 50620 | Colwell | Standard | 36 | — | 0.1 | -10.0% |