Marshall County, Iowa

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Marshall County, Iowa
Courthouse located in Marshalltown is on the NRHP
Map of Iowa highlighting Marshall County
Location in the state of Iowa
Map of the United States highlighting Iowa
Iowa's location in the U.S.
Founded 1846
Seat Marshalltown
Area
  Total 573.02 sq mi (1,484 km2)
  Land 572.32 sq mi (1,482 km2)
  Water 0.70 sq mi (2 km2), 0.12%
Population
  (2010) 40,648
  Density 71/sq mi (27/km²)
Time zone Central: UTC-6/-5
Website www.co.marshall.ia.us
Footnotes: Population [1]

Marshall County is a county located in the U.S. state of Iowa. The population was 40,648 in the 2010 census, an increase from 39,311 in the 2000 census.[1] The county seat is Marshalltown.[2] The center of population of Iowa is located in Marshall County southwest of Marshalltown.[3]

Geography

According to the 2000 census, the county has a total area of 573.02 square miles (1,484.1 km2), of which 572.32 square miles (1,482.3 km2) (or 99.88%) is land and 0.70 square miles (1.8 km2) (or 0.12%) is water.[4]

Major highways

Adjacent counties

History

Marshall County was formed on January 13, 1846. It was named after John Marshall, Chief Justice of the United States Supreme Court.[5]

Demographics

Historical population
Census Pop.
1850338
18606,0151,679.6%
187017,576192.2%
188023,75235.1%
189025,8428.8%
190029,99116.1%
191030,2791.0%
192032,6307.8%
193033,7273.4%
194035,4065.0%
195035,6110.6%
196037,9846.7%
197041,0768.1%
198041,6521.4%
199038,276−8.1%
200039,3112.7%
Est. 201240,857
U.S. Decennial Census[6]
2012 Estimate[7]

2010 census

The 2010 census recorded a population of 40,648 in the county, with a population density of 71.0232/sq mi (27.4222/km2). There were 16,831 housing units, of which 15,538 were occupied.[1]

2000 census

2000 Census Age Pyramid for Marshall County

As of the census[8] of 2000, there were 39,311 people, 15,338 households, and 10,460 families residing in the county. The population density was 69 people per square mile (27/km²). There were 16,324 housing units at an average density of 28 per square mile (11/km²). The racial makeup of the county was 90.44% White, 0.93% Black or African American, 0.35% Native American, 0.78% Asian, 0.06% Pacific Islander, 6.03% from other races, and 1.42% from two or more races. 8.96% of the population were Hispanic or Latino of any race.

There were 15,338 households out of which 31.10% had children under the age of 18 living with them, 55.40% were married couples living together, 9.30% had a female householder with no husband present, and 31.80% were non-families. 26.90% of all households were made up of individuals and 12.20% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 3.00.

In the county the population was spread out with 25.30% under the age of 18, 8.10% from 18 to 24, 26.30% from 25 to 44, 23.90% from 45 to 64, and 16.40% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 99.20 males. For every 100 females age 18 and over, there were 96.50 males.

The median income for a household in the county was $38,268, and the median income for a family was $46,627. Males had a median income of $33,809 versus $24,063 for females. The per capita income for the county was $19,176. About 7.10% of families and 10.20% of the population were below the poverty line, including 14.30% of those under age 18 and 8.60% of those age 65 or over.

Communities

Incorporated cities

Unincorporated communities

See also

References

External links

Coordinates: 42°02′03″N 93°00′04″W / 42.03417°N 93.00111°W / 42.03417; -93.00111

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