Union County, Iowa
Union County: county in Iowa, United States
About
Union County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 12,534 and a population density of 11 people per km². After 10 years in 2020 county had an estimated population of 12,157 inhabitants. Its county seat is Creston. The county was created 173 years ago in 1852.
County Snapshot
Union County at a glance
Union County currently has 7 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
7
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
CrestonPopulation 7,660
Top linked places
Quick Facts about Union County
| Population | 12,157 (2020) |
| Country | United States of America |
| State | Iowa (United States) |
| Different from | Union County, Union County, Union County, Union County, Union County, Union County, Union County, Union County, Union County, Union County, Union County, Union County, Union County, Union County, Union Parish, Union County, Union County |
| Area | 1103 km2 |
| Water as percent of area | 0.5% |
| Land as percent of area | 99.5% |
| Latitude & Longitude | 41.0277,-94.2424 |
| Named for | United States of America |
| Capital | Creston |
| Establishment | January 01, 1853 |
| Time Zone | America/Chicago |
| Local time | 18:43:53 (18th April 2026) |
| Density | 11 Pop. per km² as of 2020 |
| Population growth | -3.1% (2010-2020) |
| Weather | 53℉ Mostly Sunny 7-days weather |
Geography
Union County is located at 41°1'40"N 94°14'33"W (41.0277300, -94.2423800). It has 2 neighbors: Madison County and Ringgold County.
Union County map
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The largest city of Union County is Creston with a population of 7,660. Other cities include, Afton population 825, Lorimor population 341, Cromwell population 105 and Arispe population 96. See all Union County cities & populated places.
Union County Populated Places
Cities, towns, neighborhoods & other populated places in Union County.
| City Name | Population | Title |
|---|---|---|
| Creston | 7,660 | City in Iowa |
| Afton | 825 | City in Union County, Iowa |
| Lorimor | 341 | City in Union County, Iowa, United States |
| Cromwell | 105 | City in Iowa, United-States |
| Arispe | 96 | Human settlement in Union County, Iowa, United States of America |
| Shannon City | 69 | Human settlement in Iowa, United States of America |
| Thayer | 58 | City in Union County, Iowa, United States |
Weather
Mostly sunny, with a high near 53. West northwest wind around 23 mph, with gusts as high as 32 mph.
7-Day ForecastOfficial website of Union County
Official Website- Creston
Demographics
According to census records, the population of Union County decreased by 3.1% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 12,534 | - | census |
| 2011 | 12,556 | 0.18% | estimation process |
| 2012 | 12,586 | 0.24% | estimation process |
| 2013 | 12,616 | 0.24% | estimation process |
| 2014 | 12,627 | 0.09% | estimation process |
| 2015 | 12,430 | -1.58% | estimation process |
| 2016 | 12,360 | -0.57% | estimation process |
| 2017 | 12,459 | 0.79% | estimation process |
| 2018 | 12,298 | -1.31% | estimation process |
| 2019 | 12,241 | -0.47% | estimation process |
| 2020 | 12,157 | -0.69% | estimation process |
Other places with the same name (16)
- Union County, New Jersey county in Oregon, United States with a population of 555,394 people.
- Union County, North Carolina county in North Carolina, United States with a population of 244,562 people.
- Union County, Ohio county in Ohio, United States with a population of 60,021 people.
- Union County, Pennsylvania county in Pennsylvania, United States with a population of 44,294 people.
- Union County, Arkansas county in Arkansas, United States with a population of 38,219 people.
- Union County, Mississippi county in Mississippi, United States with a population of 28,866 people.
- Union County, South Carolina county in South Carolina, United States with a population of 26,991 people.
- Union County, Oregon county in Oregon, United States with a population of 26,551 people.
- Union County, Georgia county in Georgia, United States with a population of 25,358 people.
- Union County, Tennessee county in Tennessee, United States with a population of 20,187 people.
- Union County, Illinois county in Illinois, United States with a population of 16,498 people.
- Union County, South Dakota county in South Dakota, United States with a population of 16,192 people.
- Union County, Florida county in Florida, United States with a population of 15,182 people.
- Union County, Kentucky county in Kentucky, United States with a population of 14,443 people.
- Union County, Indiana county in Indiana, United States with a population of 7,119 people.
- Union County, New Mexico county in New Mexico, United States with a population of 4,026 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. |