Lyon County, Iowa
Lyon County: county in Iowa, United States of America
About
Lyon County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 11,581 and a population density of 8 people per km². After 10 years in 2020 county had an estimated population of 11,756 inhabitants. Its county seat is Rock Rapids. The county was created 175 years ago in 1851.
County Snapshot
Lyon County at a glance
Lyon County currently has 8 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
8
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
Rock RapidsPopulation 2,518
Top linked places
Quick Facts about Lyon County
| Population | 11,756 (2020) |
| Country | United States of America |
| State | Iowa (United States) |
| Different from | Lyon County, Lyon County, Lyon County, Lyon County |
| Area | 1522 km2 |
| Official name | Lyon County |
| Water as percent of area | 0.02% |
| Land as percent of area | 99.98% |
| Latitude & Longitude | 43.3805,-96.2103 |
| Named for | Nathaniel Lyon |
| Capital | Rock Rapids |
| Establishment | January 15, 1851 |
| Time Zone | UTC−05:00 |
| Local time | 21:55:44 (18th April 2026) |
| Density | 8 Pop. per km² as of 2020 |
| Population growth | 1.49% (2010-2020) |
| Weather | 27℉ Mostly Clear 7-days weather |
Geography
Lyon County is located at 43°22'50"N 96°12'37"W (43.3805000, -96.2102900). It has 4 neighbors: Osceola County, Rock County, Lincoln County and Minnehaha County.
Lyon County map
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The largest city of Lyon County is Rock Rapids with a population of 2,518. Other cities include, George population 1,029, Inwood population 847, Doon population 599 and Little Rock population 433. See all Lyon County cities & populated places.
Lyon County Populated Places
Cities, towns, neighborhoods & other populated places in Lyon County.
| City Name | Population | Title |
|---|---|---|
| Rock Rapids | 2,518 | City in Iowa |
| George | 1,029 | City in Iowa, USA |
| Larchwood | 918 | Township in Lyon County, Iowa |
| Inwood | 847 | City in Lyon County, Iowa, United States |
| Doon | 599 | City in Lyon County, Iowa, United States |
| Little Rock | 433 | Human settlement in Lyon County, Iowa, United States of America |
| Lester | 303 | City in Lyon County, Iowa, United States |
| Alvord | 210 | Human settlement in Lyon County, Iowa, United States of America |
Weather
Mostly clear, with a low around 27. Northwest wind around 15 mph, with gusts as high as 25 mph.
7-Day ForecastOfficial website of Lyon County
Official Website- Rock Rapids
Demographics
The population of Lyon County increased by 1.49% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2000 | 11,763 | - | estimation process |
| 2010 | 11,581 | -1.57% | census |
| 2011 | 11,692 | 0.95% | estimation process |
| 2012 | 11,757 | 0.55% | estimation process |
| 2013 | 11,695 | -0.53% | estimation process |
| 2014 | 11,703 | 0.07% | estimation process |
| 2015 | 11,747 | 0.37% | estimation process |
| 2016 | 11,780 | 0.28% | estimation process |
| 2017 | 11,785 | 0.04% | estimation process |
| 2018 | 11,815 | 0.25% | estimation process |
| 2019 | 11,755 | -0.51% | estimation process |
| 2020 | 11,756 | 0.01% | estimation process |
Other places with the same name (4)
- Lyon County, Nevada county in Nevada, United States with a population of 58,319 people.
- Lyon County, Kansas county in Nevada, United States with a population of 33,045 people.
- Lyon County, Minnesota county in Minnesota, United States with a population of 25,271 people.
- Lyon County, Kentucky county in Kentucky, United States with a population of 8,133 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. |