Rock Falls, IA ZIP Codes
2 ZIP codes serve Rock Falls, Iowa: 50401 and 50467. Together they are home to 28,766 residents in 13,345 households. That is more than the 119 people counted inside Rock Falls city limits, because these ZIP codes reach past its boundary.
Rock Falls city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 119 |
| Households | 47 |
| Median household income | $71,042 |
| Median home value | $156,300 |
| Median age | 44.5 |
| Median rent | not published |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 28,766 |
| Households (sum of ZIP codes) | 13,345 |
| Median household income, range across ZIP codes | $66,072 (50401) to $66,072 (50401) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $66,072 |
| Homeowners | 66.3% |
| Households with kids under 18 | 25.0% |
| Moved in the past year | 12.9% |
| Carrier routes in EDDM2GO's route library | not loaded yet |
Every ZIP code in Rock Falls
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 50401 | Mason City | 28,703 | 13,321 | $66,072 | $146,500 | 66.3% | 25.0% | 12.9% | — | — | 0% of its land |
| 50467 | Rock Falls | 63 | 24 | $63,750 | $150,000 | 91.7% | 37.5% | 6.3% | — | — | 12% of its land; mailing city |
A ZIP code is listed for Rock Falls when at least 10% of its land lies inside Rock Falls city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Rock Falls. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Rock Falls.
Counties
- Cerro Gordo County — 14 ZIP codes
Nearby cities sharing these ZIP codes
- Mason City — 1 ZIP code
Price a mailing to Rock Falls ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Rock Falls, IA?
- 50401 and 50467. A ZIP code is listed for Rock Falls when at least 10% of its land lies inside Rock Falls city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Rock Falls.
- What is the population of Rock Falls, IA?
- The Census Bureau counts 119 residents inside Rock Falls city limits (ACS 2020–2024). The 2 ZIP codes that serve Rock Falls hold 28,766 residents in all.
- What is the median household income in Rock Falls, IA?
- $71,042 inside Rock Falls city limits, per the Census Bureau. Across its ZIP codes the medians run from $66,072 to $66,072.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.