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Dickinson County
Dickinson County
County
	Dickinson County Courthouse
	Location within the U.S. state of Iowa
	Iowa's location within the U.S.
	Coordinates: 43°22′33″N 95°08′59″W / 43.375833333333°N 95.149722222222°W
Country	United States
State	Iowa
Founded	1857
Named for	Daniel S. Dickinson
Seat	Spirit Lake
Largest city	Spirit Lake
Area
• Total	404 sq mi (1,050 km2)
• Land	381 sq mi (990 km2)
• Water	23 sq mi (60 km2) 5.8%
Population (2020)
• Total	17,703
• Density	44/sq mi (17/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	4th
Website	dickinsoncountyiowa.gov

Dickinson County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 17,703.^[1] The county seat is Spirit Lake.^[2] The county was organized in 1857 and is named in honor of Daniel S. Dickinson,^[3] a U.S. Senator for New York.

Dickinson County comprises the Spirit Lake, IA Micropolitan Statistical Area.

Geography

According to the U.S. Census Bureau, the county has a total area of 404 square miles (1,050 km²), of which 381 square miles (990 km²) is land and 23 square miles (60 km²) (5.8%) is water.^[4] It is the smallest county by land area in Iowa, and the fifth-smallest by total area.

A region known as the Iowa Great Lakes is in Dickinson County, making it a popular vacation destination for Iowans, and explaining the recent high population growth in the area. The lakes include West Okoboji Lake, East Okoboji Lake, and Spirit Lake.

Major highways

Adjacent counties

Demographics

Historical population
Census	Pop.	Note	%±
1860	180		—
1870	1,389		671.7%
1880	1,901		36.9%
1890	4,328		127.7%
1900	7,995		84.7%
1910	8,137		1.8%
1920	10,241		25.9%
1930	10,982		7.2%
1940	12,185		11.0%
1950	12,756		4.7%
1960	12,574		−1.4%
1970	12,565		−0.1%
1980	15,629		24.4%
1990	14,909		−4.6%
2000	16,424		10.2%
2010	16,667		1.5%
2020	17,703		6.2%
2023 (est.)	18,056	^[5]	2.0%
U.S. Decennial Census^[6] 1790-1960^[7] 1900-1990^[8] 1990-2000^[9] 2010-2018^[10]

2020 census

Population of Dickinson County from US census data

2022 US Census population pyramid for Dickinson County from ACS 5-year estimates

The 2020 census recorded a population of 17,703 in the county, with a population density of 43.6672/sq mi (16.8600/km²). 96.84% of the population reported being of one race. 92.71% were non-Hispanic White, 0.45% were Black, 2.29% were Hispanic, 0.12% were Native American, 0.46% were Asian, 0.01% were Native Hawaiian or Pacific Islander, and 3.96% were some other race or more than one race. There were 13,691 housing units of which 7,976 were occupied.^[1]

2010 census

The 2010 census recorded a population of 16,667 in the county, with a population density of 43.7385/sq mi (16.8875/km²). There were 12,849 housing units, of which 7,554 were occupied.^[11]

2000 census

As of the census^[12] of 2000, there were 16,424 people, 7,103 households, and 4,759 families residing in the county. The population density was 43 inhabitants per square mile (17/km²). There were 11,375 housing units at an average density of 30 per square mile (12/km²). The racial makeup of the county was 98.90% White, 0.18% Black or African American, 0.21% Native American, 0.18% Asian, 0.01% Pacific Islander, 0.10% from other races, and 0.43% from two or more races. 0.66% of the population were Hispanic or Latino of any race.

There were 7,103 households, out of which 26.10% had children under the age of 18 living with them, 57.80% were married couples living together, 6.70% had a female householder with no husband present, and 33.00% were non-families. 28.60% of all households were made up of individuals, and 13.70% had someone living alone who was 65 years of age or older. The average household size was 2.27 and the average family size was 2.78.

In the county, the population was spread out, with 21.90% under the age of 18, 6.60% from 18 to 24, 23.90% from 25 to 44, 26.90% from 45 to 64, and 20.60% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 95.00 males. For every 100 females age 18 and over, there were 92.30 males.

The median income for a household in the county was $39,020, and the median income for a family was $47,739. Males had a median income of $30,523 versus $22,131 for females. The per capita income for the county was $21,929. 6.00% of the population and 4.20% of families were below the poverty line. Out of the total people living in poverty 5.90% of those under the age of 18 and 7.00% of those 65 and older were living below the poverty line.

Communities

Cities

A picture postcard postmarked Okoboji Iowa Aug 1, 1907

Unincorporated community

Montgomery

Townships

Dickinson County is divided into twelve townships:

Population ranking

The population ranking of the following table is based on the 2020 census of Dickinson County.^[1] † county seat

Rank	City/Town/etc.	Municipal type	Population (2020 Census)
1	† Spirit Lake	City	5,439
2	Milford	City	3,321
3	Lake Park	City	1,167
4	Arnolds Park	City	1,110
5	Okoboji	City	768
6	Orleans	City	521
7	Wahpeton	City	345
8	Terril	City	334
9	West Okoboji	City	308
10	Superior	City	132

Politics

United States presidential election results for Dickinson County, Iowa^[13]
Year	Republican		Democratic		Third party(ies)
Year	No.	%	No.	%	No.	%
2024	7,775	69.21%	3,297	29.35%	162	1.44%
2020	7,438	66.15%	3,661	32.56%	145	1.29%
2016	6,753	65.22%	3,056	29.52%	545	5.26%
2012	5,912	58.19%	4,095	40.31%	152	1.50%
2008	5,162	52.10%	4,625	46.68%	120	1.21%
2004	5,337	55.87%	4,140	43.34%	76	0.80%
2000	4,225	52.03%	3,660	45.07%	236	2.91%
1996	3,129	40.92%	3,562	46.59%	955	12.49%
1992	3,196	38.49%	3,106	37.40%	2,002	24.11%
1988	3,678	51.80%	3,342	47.06%	81	1.14%
1984	4,064	56.68%	3,025	42.19%	81	1.13%
1980	4,028	54.13%	2,620	35.21%	794	10.67%
1976	3,795	54.14%	3,074	43.85%	141	2.01%
1972	3,739	58.60%	2,373	37.19%	269	4.22%
1968	3,472	56.45%	2,286	37.16%	393	6.39%
1964	2,443	41.14%	3,490	58.77%	5	0.08%
1960	3,575	56.99%	2,696	42.98%	2	0.03%
1956	3,641	59.14%	2,498	40.57%	18	0.29%
1952	4,401	71.05%	1,748	28.22%	45	0.73%
1948	2,304	48.34%	2,324	48.76%	138	2.90%
1944	2,133	46.10%	2,473	53.45%	21	0.45%
1940	2,736	47.65%	2,985	51.99%	21	0.37%
1936	2,322	40.10%	3,399	58.69%	70	1.21%
1932	2,074	44.07%	2,500	53.12%	132	2.80%
1928	3,045	70.57%	1,251	28.99%	19	0.44%
1924	2,967	66.18%	435	9.70%	1,081	24.11%
1920	3,298	80.42%	760	18.53%	43	1.05%
1916	1,249	57.24%	893	40.93%	40	1.83%
1912	457	24.54%	502	26.96%	903	48.50%
1908	1,109	66.57%	503	30.19%	54	3.24%
1904	1,320	78.01%	312	18.44%	60	3.55%
1900	1,352	73.16%	445	24.08%	51	2.76%
1896	1,131	67.36%	517	30.79%	31	1.85%