Bremer County, IA ZIP codes
There are 8 ZIP codes in Bremer County, IA, in 8 towns, from 50622 to 50677. The largest are 50677 (Waverly), 50674 (Sumner) and 50622 (Denver). 1 more crosses into it from a neighbouring county: 50629.
The county seat is Waverly.
- ZIP codes
- 8
- Partly in it
- 1 more
- Towns
- 8
- County seat
- Waverly
- County FIPS
19017- State
- Iowa
- Population
- 25,204
- Median household income
- $86,784
- Land area
- 435 sq mi
- Area code
- 319
- Metro area
- Waterloo-Cedar Falls
Bremer County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
ZIP codes partly in Bremer County
This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Bremer County.
- 50629 Fairbank · mostly in Buchanan County
Map of Bremer County ZIP codes
The ZIP codes of Bremer County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Bremer County in numbers
About 25,204 people live in Bremer County, in 9,716 households, the 26th most populous of Iowa's 99 counties. The median household income is $86,784 a year, 16% above the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $219,600 (6% above the Iowa median), and median gross rent is $921 a month. The median age is 39.0; 36.2% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 20 minutes.
| Population | 25,204 |
|---|---|
| Households | 9,716 |
| Median age | 39.0 |
| Median household income | $86,784 |
| Median home value | $219,600 |
| Median gross rent | $921 |
| Bachelor's degree or higher | 36.2% |
| Mean commute | 20.1 min |
| Population density | 58 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Bremer County
| Town | ZIP codes | Population |
|---|---|---|
| Waverly | 1 | 10,494 |
| Denver | 1 | 2,379 |
| Sumner | 1 | 2,106 |
| Tripoli | 1 | 1,156 |
| Janesville | 1 | 917 |
| Readlyn | 1 | 736 |
| Plainfield | 1 | 314 |
| Frederika | 1 | 236 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Bremer County.
- Black Hawk County (14)
- Buchanan County (10)
- Fayette County (15)
- Floyd County (7)
- Butler County (11)
- Chickasaw County (7)
Not sure you are in Bremer County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Bremer County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
50622 | Denver , IA | Standard | 3,549 | $95,089 | $254,100 |
50631 | Frederika , IA | Standard | 225 | $58,750 | $98,800 |
50647 | Janesville , IA | Standard | 1,978 | $104,063 | $314,200 |
50666 | Plainfield , IA | Standard | 753 | $79,867 | $203,700 |
50668 | Readlyn , IA | Standard | 1,216 | $85,956 | $174,000 |
50674 | Sumner , IA | Standard | 3,446 | $72,794 | $174,100 |
50676 | Tripoli , IA | Standard | 2,017 | $87,115 | $154,500 |
50677 | Waverly , IA | Standard | 12,673 | $85,633 | $232,800 |
Cite this page
zipcodes.pro. “Bremer County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ia/county/bremer
Underlying data is public domain or openly licensed — sources, vintages and licences.