Clayton County, Iowa
Clayton County: county in Iowa, United States
About
Clayton County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 18,129 and a population density of 9 people per km². After 10 years in 2020 county had an estimated population of 17,321 inhabitants. Its county seat is Elkader. The county was created 189 years ago in 1836.
County Snapshot
Clayton County at a glance
Clayton County currently has 16 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
16
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Iowa counties
99
Open related pagesLargest city
GuttenbergPopulation 1,783
Top linked places
Quick Facts about Clayton County
| Population | 17,321 (2020) |
| Country | United States of America |
| State | Iowa (United States) |
| Different from | Clayton County |
| Area | 2053 km2 |
| Water as percent of area | 1.8% |
| Land as percent of area | 98.2% |
| Latitude & Longitude | 42.8448,-91.3414 |
| Named for | John Middleton Clayton |
| Capital | Elkader |
| Establishment | January 01, 1837 |
| Time Zone | America/Chicago |
| Local time | 06:29:26 (19th April 2026) |
| Density | 8 Pop. per km² as of 2020 |
| Population growth | -4.66% (2010-2020) |
Geography
Clayton County is located at 42°50'41"N 91°20'29"W (42.8447500, -91.3414300). It has 8 neighbors: Iowa County, Allamakee County, Buchanan County, Delaware County, Dubuque County, Winneshiek County, Crawford County and Grant County.
Clayton County map
icon to open full mode. View satellite images
The largest city of Clayton County is Guttenberg with a population of 1,783. Other cities include, Elkader population 1,201, Strawberry Point population 1,193, McGregor population 826 and Marquette population 448. See all Clayton County cities & populated places.
Clayton County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Clayton County.
| City Name | Population | Title |
|---|---|---|
| Guttenberg | 1,783 | City in Iowa, USA |
| Monona | 1,462 | Township in Clayton County, Iowa |
| Elkader | 1,201 | Town |
| Strawberry Point | 1,193 | City in Clayton County, Iowa, United States of America |
| McGregor | 826 | City in Iowa |
| Garnavillo | 716 | Township in Clayton County, Iowa |
| Marquette | 448 | City in Iowa, United States |
| Luana | 276 | City in Clayton County, Iowa, United States |
| Farmersburg | 264 | Township in Clayton County, Iowa |
| Volga | 193 | Human settlement in Clayton County, Iowa, United States of America |
| North Buena Vista | 120 | Human settlement in Clayton County, Iowa, United States of America |
| Saint Olaf | 99 | Human settlement in Clayton County, Iowa, United States of America |
| Garber | 86 | Human settlement in Clayton County, Iowa, United States of America |
| Osterdock | 47 | Human settlement in Clayton County, Iowa, United States of America |
| Clayton | 39 | City in Iowa, United States |
| Elkport | 36 | Ghost town in Clayton County, Iowa |
Official website of Clayton County
Official Website- Elkader
Demographics
According to census records, the population of Clayton County decreased by 4.66% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 18,129 | - | census |
| 2011 | 18,017 | -0.62% | estimation process |
| 2012 | 17,946 | -0.4% | estimation process |
| 2013 | 17,793 | -0.86% | estimation process |
| 2014 | 17,768 | -0.14% | estimation process |
| 2015 | 17,726 | -0.24% | estimation process |
| 2016 | 17,661 | -0.37% | estimation process |
| 2017 | 17,648 | -0.07% | estimation process |
| 2018 | 17,540 | -0.62% | estimation process |
| 2019 | 17,549 | 0.05% | estimation process |
| 2020 | 17,321 | -1.32% | estimation process |
People born in Clayton County (1)
American author Eugenie S. Birkholz was born in Clayton County
Other places with the same name (1)
- Clayton County, Georgia county in Iowa, United States with a population of 292,646 people.
Iowa Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Indiana | 820,445 | A city located in the state of Iowa. |
| Polk County | 494,281 | County in Iowa, United States |
| Linn County | 227,854 | County in Oregon, United States |
| Des Moines | 212,312 | The capital of Iowa. |
| Scott County | 173,216 | County in Tennessee, United States |
| Johnson County | 153,740 | County in Iowa, United States |
| Cedar Rapids | 134,027 | The second most populous city in Iowa. |
| Black Hawk County | 130,786 | County in Iowa, United States |
| Woodbury County | 103,138 | County in Iowa, United States of America |
| Davenport | 101,799 | The most populous city in Scott County, Iowa. |
| Story County | 98,237 | County in Iowa, United States |
| Dubuque County | 97,590 | County in Iowa, United States |
| Dallas County | 96,963 | County in Iowa, United States |
| Pottawattamie County | 93,328 | County in Iowa, United States of America |
| Sioux City | 82,651 | The second most populous city in Iowa. |
| Iowa City | 75,130 | The most populous city in Johnson County, Iowa. |