There are 18 cities in Clayton County, Iowa.

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Postville1Iowa2,4082,502-0.91%1,1412.11
Guttenberg2Iowa1,8041,812-0.22%8632.09
Monona3Iowa1,4561,470-0.27%1,2481.17
Elkader4Iowa1,1981,211-0.25%8701.38
Strawberry Point5Iowa1,1391,157-0.44%5392.11
Edgewood6Iowa907908-0.33%1,0670.85
Garnavillo7Iowa752757-0.4%7361.02
McGregor8Iowa726737-0.55%5581.30
Marquette9Iowa4404280.92%2351.87
Luana10Iowa3173001.93%3011.05
Farmersburg11Iowa260272-1.52%6480.40
Volga12Iowa200203-0.5%2550.78
North Buena Vista13Iowa1111070.91%1111
St. Olaf14Iowa100103-0.99%4100.24
Garber15Iowa7777 3350.23
Clayton16Iowa4646 930.49
Osterdock17Iowa4444 960.46
Elkport18Iowa2828 1120.25
showing: 18 rows

Cities in Clayton County, Iowa by Population (2024)

What is the largest city in Clayton County, Iowa?

Postville is the largest city in Clayton County.

What is the smallest city in Clayton County, Iowa?

Elkport is the smallest city in Clayton County.

How many cities are in Clayton County?

There are 18 cities in Clayton County, Iowa.

Frequently Asked Questions