Bremer County, Iowa ZIP codes
8 ZIP codes are in Bremer County, plus 5 that cross in from neighboring counties. It's part of the Waterloo-Cedar Falls, IA metro area.
- ZIP codes
- 8
- Population in these ZIPs
- 25,857
- Avg. median income
- $86,400population-weighted
- Cities & towns
- 8
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Bremer County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 50622 | Denver | 3,549 | $95,089 | $309,700 |
| 50631 | Frederika | 225 | $58,750 | $98,800 |
| 50647 | Janesville | 1,978 | $104,063 | $313,200 |
| 50666 | Plainfield | 753 | $79,867 | $221,800 |
| 50668 | Readlyn | 1,216 | $85,956 | $223,800 |
| 50674 | Sumner | 3,446 | $72,794 | $211,400 |
| 50676 | Tripoli | 2,017 | $87,115 | $173,000 |
| 50677 | Waverly | 12,673 | $85,633 | $280,100 |
ZIP codes partly in Bremer County
These ZIP codes are mostly in a neighboring county but cover part of Bremer County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 50629 | Fairbank | Buchanan County | 2,082 | $103,106 | $267,400 |
| 50630 | Fredericksburg | Chickasaw County | 1,372 | $71,518 | $207,400 |
| 50645 | Ionia | Chickasaw County | 1,193 | $64,408 | $257,200 |
| 50658 | Nashua | Chickasaw County | 2,450 | $71,936 | $192,100 |
| 50670 | Shell Rock | Butler County | 2,270 | $84,679 | $230,600 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Bremer County
Nearby counties
Frequently asked questions
How many ZIP codes are in Bremer County, Iowa?
8 ZIP codes are mainly in Bremer County, and 5 more ZIP codes from neighboring areas reach partly into it.
What cities are in Bremer County?
ZIP codes in Bremer County use the city names Denver, Frederika, Janesville, Plainfield, Readlyn, Sumner, Tripoli and Waverly.
What metro area is Bremer County in?
Bremer County is part of the Waterloo-Cedar Falls, IA metropolitan statistical area.