Henry County, Iowa | |
|---|---|
 Henry County Courthouse | |
 Location within the U.S. state ofIowa | |
 Iowa's location within theU.S. | |
| Coordinates:40°59′12″N91°32′31″W / 40.986666666667°N 91.541944444444°W /40.986666666667; -91.541944444444 | |
| Country |  United States |
| State |  Iowa |
| Founded | December 7, 1836 |
| Named after | Henry Dodge |
| Seat | Mount Pleasant |
| Largest city | Mount Pleasant |
| Area | |
• Total | 437 sq mi (1,130 km2) |
| • Land | 434 sq mi (1,120 km2) |
| • Water | 2.2 sq mi (5.7 km2) 0.5% |
| Population (2020) | |
• Total | 20,482 |
• Estimate (2023) | 19,547 |
| • Density | 47.2/sq mi (18.2/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 2nd |
| Website | henrycounty |
Henry County is acounty located in theU.S. state ofIowa. As of the2020 census, its population was 20,482.[1] Thecounty seat isMount Pleasant.[2] The county was named for GeneralHenry Dodge, governor of Wisconsin Territory.
Henry County was formed on December 7, 1836, under the jurisdiction ofWisconsin Territory, and became a part ofIowa Territory when it was formed on July 4, 1838.[3] It was named for General Henry Dodge.[4]
The county's first courthouse was built in 1839–1840. A larger courthouse was built in 1871, and the present courthouse was raised in the 20th century, being placed into service on August 4, 1914.[5]
According to theU.S. Census Bureau, the county has a total area of 437 square miles (1,130 km2), of which 2.2 square miles (5.7 km2) (0.5%) are covered by water.[6]
| Census | Pop. | Note | %± |
|---|---|---|---|
| 1850 | 8,707 | — | |
| 1860 | 18,701 | 114.8% | |
| 1870 | 21,463 | 14.8% | |
| 1880 | 20,986 | −2.2% | |
| 1890 | 18,895 | −10.0% | |
| 1900 | 20,022 | 6.0% | |
| 1910 | 18,640 | −6.9% | |
| 1920 | 18,298 | −1.8% | |
| 1930 | 17,660 | −3.5% | |
| 1940 | 17,994 | 1.9% | |
| 1950 | 18,708 | 4.0% | |
| 1960 | 18,187 | −2.8% | |
| 1970 | 18,114 | −0.4% | |
| 1980 | 18,890 | 4.3% | |
| 1990 | 19,226 | 1.8% | |
| 2000 | 20,336 | 5.8% | |
| 2010 | 20,145 | −0.9% | |
| 2020 | 20,482 | 1.7% | |
| 2023 (est.) | 19,547 | [7] | −4.6% |
| U.S. Decennial Census[8] 1790-1960[9] 1900-1990[10] 1990-2000[11] 2010-2018[12] | |||
The 2020 census recorded a population of 20,482 in the county, with a population density of46.9453/sq mi (18.1257/km2); 95.23% of the population reported being of one race. The county had 8,398 housing units, of which 7,746 were occupied.[1]
| Race | Number | Percentage |
|---|---|---|
| White (NH) | 17,643 | 86.14% |
| Black or African American (NH) | 501 | 2.44% |
| Native American (NH) | 60 | 0.3% |
| Asian (NH) | 451 | 2.2% |
| Pacific Islander (NH) | 8 | .04% |
| Other or multiracial (NH) | 736 | 3.6% |
| Hispanic or Latino | 1,083 | 5.3% |
The 2010 census recorded a population of 20,145 in the county, with a population density of47.4625/sq mi (18.3254/km2). The county had 8,280 housing units, of which 7,666 were occupied.[14]
As of the 2000census,[15] 20,336 people, 7,626 households, and 5,269 families resided in the county. Thepopulation density was 47 people per square mile (18 people/km2). The 8,246 housing units had an average density of 19 units per square mile (7.3 units/km2). Theracial makeup of the county was 94.78% White, 1.49% Black or African American, 0.24% Native American, 1.88% Asian, 0.02% Pacific Islander, 0.52% from other races, and 1.07% from two or more races. About 1.26% of the population were Hispanics or Latinos of any race.
Of the 7,626 households, 32.8% had children under 18 living with them, 57.7% were married couples living together, 8.2% had a female householder with no husband present, and 30.9% were not families. About 26.8% of all households were made up of individuals, and 12.2% had someone living alone who was 65 or older. The average household size was 2.46 and the average family size was 2.98.
In the county, the age distribution was 24.7% under 18, 9.0% from 18 to 24, 29.2% from 25 to 44, 22.5% from 45 to 64, and 14.7% who were 65 or older. The median age was 37 years. For every 100 females, there were 102.5 males; for every 100 females 18 and over, there were 102.8 males.
The median income for a household in the county was $39,087, and for a family was $46,985. Males had a median income of $31,801 versus $23,075 for females. Theper capita income for the county was $18,192. About 6.70% of families and 8.80% of the population were below thepoverty line, including 10.30% of those under age 18 and 9.30% of those age 65 or over.
The population ranking of the following table is based on the2020 census of Henry County.[1]
| Rank | City/town/etc. | Municipal type | Population (2020 Census) |
|---|---|---|---|
| 1 | †Mount Pleasant | City | 9,274 |
| 2 | New London | City | 1,910 |
| 3 | Winfield | City | 1,033 |
| 4 | Wayland | City | 964 |
| 5 | Salem | City | 394 |
| 6 | Olds | City | 192 |
| 7 | Hillsboro | City | 163 |
| 8 | Mount Union | CDP | 120 |
| 9 | Rome | City | 114 |
| 10 | Westwood | City | 101 |
| 11 | Coppock (partially inJefferson andWashington Counties) | City | 36 |
† county seat
Henry County is one of the most Republican counties in Iowa. It has backed Democratic Party candidates in only five elections for president from 1880 to the present.
| Year | Republican | Democratic | Third party(ies) | |||
|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | |
| 1896 | 2,774 | 55.83% | 2,092 | 42.10% | 103 | 2.07% |
| 1900 | 2,794 | 57.64% | 1,907 | 39.34% | 146 | 3.01% |
| 1904 | 2,647 | 64.47% | 1,259 | 30.66% | 200 | 4.87% |
| 1908 | 2,653 | 60.90% | 1,606 | 36.87% | 97 | 2.23% |
| 1912 | 1,663 | 39.12% | 1,580 | 37.17% | 1,008 | 23.71% |
| 1916 | 2,470 | 57.99% | 1,728 | 40.57% | 61 | 1.43% |
| 1920 | 5,254 | 71.91% | 1,939 | 26.54% | 113 | 1.55% |
| 1924 | 4,536 | 62.17% | 1,344 | 18.42% | 1,416 | 19.41% |
| 1928 | 5,160 | 70.90% | 2,053 | 28.21% | 65 | 0.89% |
| 1932 | 3,398 | 42.09% | 4,518 | 55.96% | 158 | 1.96% |
| 1936 | 4,480 | 54.17% | 3,542 | 42.82% | 249 | 3.01% |
| 1940 | 5,893 | 67.36% | 2,837 | 32.43% | 19 | 0.22% |
| 1944 | 5,208 | 65.12% | 2,741 | 34.27% | 49 | 0.61% |
| 1948 | 4,620 | 59.19% | 3,042 | 38.98% | 143 | 1.83% |
| 1952 | 6,424 | 71.93% | 2,438 | 27.30% | 69 | 0.77% |
| 1956 | 5,818 | 68.49% | 2,667 | 31.39% | 10 | 0.12% |
| 1960 | 5,531 | 66.03% | 2,839 | 33.89% | 7 | 0.08% |
| 1964 | 3,247 | 43.40% | 4,223 | 56.44% | 12 | 0.16% |
| 1968 | 4,613 | 60.23% | 2,532 | 33.06% | 514 | 6.71% |
| 1972 | 5,066 | 64.26% | 2,721 | 34.51% | 97 | 1.23% |
| 1976 | 3,848 | 48.79% | 3,882 | 49.22% | 157 | 1.99% |
| 1980 | 4,430 | 52.35% | 3,317 | 39.20% | 715 | 8.45% |
| 1984 | 4,516 | 56.77% | 3,377 | 42.45% | 62 | 0.78% |
| 1988 | 3,951 | 50.93% | 3,754 | 48.39% | 53 | 0.68% |
| 1992 | 3,435 | 39.81% | 3,544 | 41.08% | 1,649 | 19.11% |
| 1996 | 3,478 | 42.03% | 3,798 | 45.90% | 999 | 12.07% |
| 2000 | 4,476 | 51.62% | 3,907 | 45.06% | 288 | 3.32% |
| 2004 | 5,220 | 55.20% | 4,127 | 43.64% | 110 | 1.16% |
| 2008 | 4,822 | 51.41% | 4,349 | 46.36% | 209 | 2.23% |
| 2012 | 5,035 | 51.92% | 4,460 | 45.99% | 202 | 2.08% |
| 2016 | 5,779 | 61.45% | 2,904 | 30.88% | 721 | 7.67% |
| 2020 | 6,507 | 65.19% | 3,275 | 32.81% | 200 | 2.00% |
| 2024 | 6,439 | 67.07% | 2,995 | 31.20% | 166 | 1.73% |
School districts in the county include:[17]
Former school district:
Places adjacent to Henry County, Iowa | |
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Municipalities and communities ofHenry County, Iowa,United States | ||
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| Cities |  | |
| CDPs | ||
| Unincorporated community | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
| International | |
|---|---|
| National | |
| Other | |
40°59′12″N91°32′31″W / 40.98667°N 91.54194°W /40.98667; -91.54194
