Population.us > Counties > Iowa > Buchanan County

Population of Buchanan County

Last official estimated population of Buchanan County was 20,946 (year 2014)[1]. This was 0.007% of total US population and 0.7% of total Iowa state population. Area of Buchanan County is 573.1 mi² (=1484.4 km²), in this year population density was 36.55 p/mi². If population growth rate would be same as in period 2010-2014 (-0.01%/yr), Buchanan County population in 2024 would be 20,916 [0].


Historical population

Historical population of Buchanan 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] +31.36 %/yr
[1860-1870] +7.98 %/yr
[1870-1880] +0.85 %/yr
[1880-1890] +0.24 %/yr
[1890-1900] +1.21 %/yr
[1900-1910] -0.81 %/yr
[1910-1920] +0.07 %/yr
[1920-1930] -0.17 %/yr
[1930-1940] +0.71 %/yr
[1940-1950] +0.44 %/yr
[1950-1960] +0.17 %/yr
[1960-1970] -0.25 %/yr
[1970-1980] +0.52 %/yr
[1980-1990] -0.94 %/yr
[1990-2000] +0.12 %/yr
[2000-2005] -0.25 %/yr
[2005-2010] +0.12 %/yr
[2010-2014] -0.01 %/yr

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Demography

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

Age Gr. (M) (F) Total
0 to 4 694 730 1,424
5 to 9 806 802 1,608
10 to 14 858 791 1,649
15 to 19 725 634 1,359
20 to 24 564 538 1,102
25 to 29 574 583 1,157
30 to 34 699 634 1,333
35 to 39 607 579 1,186
40 to 44 599 567 1,166
45 to 49 627 671 1,298
50 to 54 785 769 1,554
55 to 59 739 779 1,518
60 to 64 656 613 1,269
65 to 69 513 535 1,048
70 to 74 383 411 794
75 to 79 299 343 642
80 to 84 167 239 406
85+ 177 348 525

Buchanan 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 10329 10461 20,790
NH 10304 10439 20,743
WA 10236 10346 20,582
NHWAC 10178 10348 20,526
NHWA 10088 10236 20,324
H 168 127 295
HWAC 151 113 264
HWA 148 110 258
BAC 113 105 218
TOM 95 119 214
NHTOM 91 116 207
NHBAC 105 99 204
AAC 72 66 138
NHAAC 69 66 135
IAC 56 52 108
BA 66 33 99
AA 48 43 91
NHAA 47 43 90
NHBA 59 29 88
NHIAC 44 42 86
IA 27 23 50
NHIA 19 14 33
HIAC 12 10 22
HIA 8 9 17
HBAC 8 6 14
HBA 7 4 11
NAC 3 7 10
NHNAC 3 6 9
HTOM 4 3 7
HAAC 3 0 3
NA 0 2 2
HAA 1 0 1
HNAC 0 1 1
HNA 0 1 1
NHNA 0 1 1

Counties near Buchanan County

Linn County population 29.8 mi, 155°
Black Hawk County 23.9 mi, 270°
Benton County 28.4 mi, 203°
Bremer County 32.8 mi, 310°
Fayette County 27.2 mi, 359°
Jones County 43.9 mi, 122°
Clayton County 36.6 mi, 45°
Delaware County 24 mi, 89°
Tama County 44.6 mi, 232°
Chickasaw County 47.4 mi, 329°


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

*Delaware Iowa Notes

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