Cities in Grundy County, Iowa by Population (2024)

There are 18 cities in Grundy County, Iowa.

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Waterloo1Iowa66,38367,275-0.34%1,07861.59
Cedar Falls2Iowa40,74840,7020.03%1,38429.43
Hudson3Iowa2,8482,5432.74%3378.45
Grundy Center4Iowa2,8062,8050%1,0922.57
Eldora5Iowa2,5682,651-0.81%6004.28
Parkersburg6Iowa1,9722,014-0.56%1,3631.45
Reinbeck7Iowa1,6651,6650%7672.17
Ackley8Iowa1,5191,595-1.23%6182.46
Dike9Iowa1,2971,300-0.08%9341.39
Conrad10Iowa1,0961,0920.09%8921.23
Aplington11Iowa1,0811,111-0.73%1,4710.73
Wellsburg12Iowa714722-0.28%6501.10
New Hartford13Iowa551571-0.9%8890.62
Holland14Iowa265269-0.38%1,0520.25
Steamboat Rock15Iowa259265-0.77%4800.54
Stout16Iowa1921900%6580.29
Beaman17Iowa158160-0.63%8450.19
Morrison18Iowa97950%1,0210.10

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Grundy County, Iowa?

Waterloo is the largest city in Grundy County.

What is the smallest city in Grundy County, Iowa?

Morrison is the smallest city in Grundy County.

How many cities are in Grundy County?

There are 18 cities in Grundy County, Iowa.

Frequently Asked Questions