Editing Bremer County, Iowa (section)

===2020 census===
The 2020 census recorded a population of 24,988 in the county, with a population density of {{Pop density|24988|440.156140|sqmi|km2}}. 97.01% of the population reported being of one race. 92.39% were non-Hispanic White, 0.96% were Black, 2.04% were Hispanic, 0.18% were Native American, 0.78% were Asian, 0.01% were Native Hawaiian or Pacific Islander and 3.63% were some other race or more than one race. There were 10,484 housing units of which 9,646 were occupied.<ref name=cen2020/>

The population ranking of the following table is based on the [[2020 United States census|2020 census]] of Bremer County.<ref name=cen2020/>
'''†''' ''county seat''

{| class="wikitable sortable"
|-
!Rank
!City/Town/etc.
!Municipal type
!Population (2020 Census)

|- style="background-color:#FFFACD;"
| 1
|'''†''' '''[[Waverly, Iowa|Waverly]]''' 
| City
| 10,394
|- style="background-color:#FFFACD;"
| 2
|'''[[Sumner, Iowa|Sumner]]''' (''partially in [[Fayette County, Iowa|Fayette County]]'')
| City
| 2,030
|- style="background-color:#FFFACD;"
| 3
|'''[[Denver, Iowa|Denver]]''' 
| City
| 1,919
|- style="background-color:#FFFACD;"
| 4
|'''[[Tripoli, Iowa|Tripoli]]''' 
| City
| 1,191
|- style="background-color:#FFFACD;"
| 5
|'''[[Janesville, Iowa|Janesville]]''' (''partially in [[Black Hawk County, Iowa|Black Hawk County]]'')
| City
| 1,034
|- style="background-color:#FFFACD;"
| 6
|'''[[Readlyn, Iowa|Readlyn]]''' 
| City
| 845
|- style="background-color:#FFFACD;"
| 7
|'''[[Plainfield, Iowa|Plainfield]]''' 
| City
| 393
|- style="background-color:#FFFACD;"
| 8
|'''[[Frederika, Iowa|Frederika]]''' 
| City
| 204
|}

[[File:BremerCountyIA2022PopPyr.png|thumb|left|2022 US Census [[population pyramid]] for Bremer County from [[American Community Survey|ACS]] 5-year estimates]]