Population.us > Counties > Iowa > Iowa County

Population of Iowa County

Last official estimated population of Iowa County was 16,320 (year 2014)[1]. This was 0.005% of total US population and 0.5% of total Iowa state population. Area of Iowa County is 587.5 mi² (=1521.6 km²), in this year population density was 27.78 p/mi². If population growth rate would be same as in period 2010-2014 (-0.05%/yr), Iowa County population in 2024 would be 16,233 [0].


Historical population

Historical population of Iowa County for period 1850-2014 [1] , [2] , [3]:

Maps: Population, population density, population changes

Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.

PopulationDensityChangesLegendsPosition

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Annual growth rate

[1850-1860] +25.6 %/yr
[1860-1870] +7.56 %/yr
[1870-1880] +1.45 %/yr
[1880-1890] -0.51 %/yr
[1890-1900] +0.68 %/yr
[1900-1910] -0.6 %/yr
[1910-1920] +0.1 %/yr
[1920-1930] -0.7 %/yr
[1930-1940] -0.18 %/yr
[1940-1950] -0.72 %/yr
[1950-1960] +0.35 %/yr
[1960-1970] -0.61 %/yr
[1970-1980] +0.01 %/yr
[1980-1990] -0.53 %/yr
[1990-2000] +0.7 %/yr
[2000-2005] +0.77 %/yr
[2005-2010] +0.07 %/yr
[2010-2014] -0.05 %/yr

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Demography

Population of Iowa County by age groups male (M) and female (F)[1b]

Age Gr. (M) (F) Total
0 to 4 506 460 966
5 to 9 557 518 1,075
10 to 14 554 531 1,085
15 to 19 543 528 1,071
20 to 24 436 416 852
25 to 29 380 396 776
30 to 34 500 459 959
35 to 39 466 452 918
40 to 44 462 483 945
45 to 49 548 530 1,078
50 to 54 662 646 1,308
55 to 59 676 646 1,322
60 to 64 568 507 1,075
65 to 69 377 379 756
70 to 74 285 333 618
75 to 79 252 328 580
80 to 84 170 282 452
85+ 170 369 539

Iowa County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.

Race Male Female Total
WAC 8000 8150 16,150
WA 7937 8094 16,031
NH 7898 8074 15,972
NHWAC 7806 7974 15,780
NHWA 7749 7926 15,675
H 214 189 403
HWAC 194 176 370
HWA 188 168 356
BAC 86 86 172
NHBAC 73 81 154
TOM 69 57 126
NHTOM 62 49 111
BA 54 57 111
NHBA 45 53 98
IAC 49 43 92
AAC 42 43 85
NHAAC 41 41 82
AA 33 37 70
NHAA 33 35 68
NHIAC 36 29 65
IA 17 18 35
HIAC 13 14 27
HBAC 13 5 18
NHIA 7 11 18
HIA 10 7 17
HTOM 7 8 15
HBA 9 4 13
NHNAC 5 0 5
NAC 5 0 5
HAAC 1 2 3
NHNA 2 0 2
NA 2 0 2
HAA 0 2 2
HNAC 0 0 0
HNA 0 0 0

Counties near Iowa County

Linn County population 36.1 mi, 41°
Johnson County 24.3 mi, 92°
Benton County 28.2 mi,
Mahaska County 38.6 mi, 230°
Washington County 30 mi, 144°
Poweshiek County 23.9 mi, 270°
Cedar County 48.2 mi, 82°
Tama County 36.3 mi, 318°
Jefferson County 47 mi, 174°
Keokuk County 25 mi, 192°


Sources, notices

[0] Calculated by population.us from last known population growth rate, not official data.

[1] County population - 2014, archived from the original, retrieved 02/23/2016

[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016

[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016

[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016

[4] County area, latitude longitude data, retrieved 02/23/2016

[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016

*Johnson Iowa Notes

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