ZIP codes
9
Grundy County, IA Demographics & ZIP Codes
Grundy County, Iowa demographics and median household income by ZIP code — 9 ZIP codes — population 11,538 — avg. income $87,753 — avg. home value $172,356. Compare income, housing, and ZIP-level data on US5.
Population
11,538
Median household income (avg.)
$87,753
117% of U.S. median
Average home value
$172,356
50% of U.S. median
Average rent
$613
53% of U.S. median
Grundy County demographics
Grundy County, Iowa covers 9 ZIP codes, with a combined ZIP-area population of about 11,538.
Median household income in Grundy County
The average median household income across ZIP codes in Grundy County, Iowa is about $87,753 — about 18% above the IA ZIP average ($74,194), and about 17% above the U.S. median ($75,149).
Among ZIPs with income data, 50642 (Holland) is near the top at about $108,750, while 50680 (Wellsburg) is near the bottom at about $72,684.
Housing in Grundy County
For housing in Grundy County, Iowa, the average median home value is about $172,356 and the average median rent is about $613.
The most populous ZIP is 50638 (Grundy Center) with about 3,474 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in Grundy County
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 50638 | Grundy Center | Grundy County | IA | 3,474 | $79,500 | $181,000 |
| 50669 | Reinbeck | Grundy County | IA | 2,447 | $83,636 | $165,300 |
| 50624 | Dike | Grundy County | IA | 1,664 | $93,333 | $243,500 |
| 50621 | Conrad | Grundy County | IA | 1,591 | $86,146 | $185,300 |
| 50680 | Wellsburg | Grundy County | IA | 1,077 | $72,684 | $123,700 |
| 50642 | Holland | Grundy County | IA | 554 | $108,750 | $181,300 |
| 50609 | Beaman | Grundy County | IA | 370 | $89,479 | $212,800 |
| 50673 | Stout | Grundy County | IA | 236 | $87,500 | $120,800 |
| 50657 | Morrison | Grundy County | IA | 125 | $88,750 | $137,500 |
Frequently asked questions
What are the demographics of Grundy County?
Grundy County, Iowa has a combined ZIP-area population of about 11,538 across 9 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in Grundy County?
The average median household income across ZIP codes in Grundy County, Iowa is about $87,753, about 18% above the state ZIP average ($74,194), and about 17% above the U.S. median ($75,149). Average median home value is about $172,356. Among ZIPs with data, 50642 (Holland) is near the top ($108,750) and 50680 (Wellsburg) is near the bottom ($72,684).
How many ZIP codes are in Grundy County?
Grundy County, Iowa includes 9 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Grundy County?
This page lists ZIP codes in Grundy County, Iowa with population, median household income, and home value. Select a ZIP for a full demographics profile.