Grundy County Internet
Grundy County, Iowa has a Broadband Grade of B with an average download speed of 1000 Mbps across 9 ZIP codes. 100% of the county has fiber internet access, and the area averages 10 providers per ZIP code. Internet access is above average for the U.S.
ZIP Code Grades in Grundy County
Fastest ZIP Codes in Grundy County
| ZIP | Grade | Download | Providers | Fiber |
|---|---|---|---|---|
| 50609 | B | 1000 Mbps | 10 | Yes |
| 50621 | B | 1000 Mbps | 10 | Yes |
| 50624 | B | 1000 Mbps | 10 | Yes |
| 50638 | B | 1000 Mbps | 10 | Yes |
| 50642 | B | 1000 Mbps | 10 | Yes |
| 50657 | B | 1000 Mbps | 10 | Yes |
| 50669 | B | 1000 Mbps | 10 | Yes |
| 50673 | B | 1000 Mbps | 10 | Yes |
| 50680 | B | 1000 Mbps | 10 | Yes |
Slowest ZIP Codes in Grundy County
| ZIP | Grade | Download | Providers | Fiber |
|---|---|---|---|---|
| 50609 | B | 1000 Mbps | 10 | Yes |
| 50621 | B | 1000 Mbps | 10 | Yes |
| 50624 | B | 1000 Mbps | 10 | Yes |
| 50638 | B | 1000 Mbps | 10 | Yes |
| 50642 | B | 1000 Mbps | 10 | Yes |
| 50657 | B | 1000 Mbps | 10 | Yes |
| 50669 | B | 1000 Mbps | 10 | Yes |
| 50673 | B | 1000 Mbps | 10 | Yes |
| 50680 | B | 1000 Mbps | 10 | Yes |
Frequently Asked Questions
What is the average internet speed in Grundy County, Iowa?
Grundy County, Iowa has an average maximum download speed of 1000 Mbps across 9 ZIP codes. The county received a Broadband Grade of B (68/100), which factors in download speed, provider competition, fiber availability, and upload speed. This meets the FCC broadband standard of 100 Mbps download.
How many internet providers are in Grundy County?
Grundy County has an average of 10 internet providers per ZIP code. 100% of ZIP codes in the county have fiber internet access. Having 3 or more providers typically leads to better prices and service quality through competition.
Is there fiber internet in Grundy County?
100% of ZIP codes in Grundy County, Iowa have fiber internet available. Fiber provides the fastest and most reliable connections, typically 500 Mbps to 5 Gbps with symmetrical upload speeds. Fiber coverage in this county is above the national average.
What is the best ZIP code for internet in Grundy County?
The best-connected ZIP code in Grundy County is 50609 with a Broadband Grade of B, 1000 Mbps maximum download, and 10 providers. Fiber internet is available in this ZIP code.
See how your connection compares to Grundy County's 1000 Mbps average.
this entity is one of the data points covered by this site’s U.S. internet availability and broadband speed dataset. The detail above comes directly from the FCC Broadband Data Collection (BDC); the context that follows situates the headline numbers against the broader distribution across U.S. ZIPs, counties, and states.
Every number on this page links back to the FCC Broadband Data Collection (BDC); the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. ZIPs, counties, and states with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: FCC Broadband Data Collection, 2026.