Population.us > Counties > Iowa > Decatur County

Population of Decatur County

Last official estimated population of Decatur County was 8,415 (year 2014)[1]. This was 0.003% of total US population and 0.3% of total Iowa state population. Area of Decatur County is 533.5 mi² (=1381.7 km²), in this year population density was 15.77 p/mi². If population growth rate would be same as in period 2010-2014 (-0.12%/yr), Decatur County population in 2024 would be 8,311 [0].


Historical population

Historical population of Decatur 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] +24.56 %/yr
[1860-1870] +3.31 %/yr
[1870-1880] +2.47 %/yr
[1880-1890] +0.2 %/yr
[1890-1900] +1.48 %/yr
[1900-1910] -1.02 %/yr
[1910-1920] +0.13 %/yr
[1920-1930] -1.05 %/yr
[1930-1940] -0.61 %/yr
[1940-1950] -1.06 %/yr
[1950-1960] -1.77 %/yr
[1960-1970] -0.79 %/yr
[1970-1980] +0.06 %/yr
[1980-1990] -1.6 %/yr
[1990-2000] +0.41 %/yr
[2000-2005] -0.16 %/yr
[2005-2010] -0.38 %/yr
[2010-2014] -0.12 %/yr

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Demography

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

Age Gr. (M) (F) Total
0 to 4 209 210 419
5 to 9 281 255 536
10 to 14 271 256 527
15 to 19 410 379 789
20 to 24 554 434 988
25 to 29 193 188 381
30 to 34 195 198 393
35 to 39 180 191 371
40 to 44 207 196 403
45 to 49 201 186 387
50 to 54 248 256 504
55 to 59 260 274 534
60 to 64 265 253 518
65 to 69 214 210 424
70 to 74 151 179 330
75 to 79 124 164 288
80 to 84 114 132 246
85+ 73 152 225

Decatur 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
NH 4034 4011 8,045
WAC 3966 3998 7,964
WA 3920 3951 7,871
NHWAC 3860 3908 7,768
NHWA 3822 3866 7,688
H 116 102 218
BAC 131 68 199
HWAC 106 90 196
NHBAC 120 66 186
HWA 98 85 183
BA 113 50 163
NHBA 107 49 156
AAC 54 47 101
TOM 49 49 98
NHAAC 52 43 95
NHTOM 41 44 85
IAC 34 46 80
AA 35 36 71
NHAA 33 32 65
NHIAC 30 35 65
IA 16 25 41
NHIA 15 18 33
NAC 19 7 26
NHNAC 18 7 25
NA 17 2 19
NHNA 16 2 18
HIAC 4 11 15
HBAC 11 2 13
HTOM 8 5 13
HIA 1 7 8
HBA 6 1 7
HAA 2 4 6
HAAC 2 4 6
HNAC 1 0 1
HNA 1 0 1

Counties near Decatur County

Warren County population 43 mi, 15°
Madison County 42.8 mi, 343°
Union County 31.4 mi, 310°
Clarke County 20.2 mi,
Harrison County 29.1 mi, 202°
Lucas County 31.3 mi, 49°
Wayne County 23.7 mi, 89°
Ringgold County 24.1 mi, 269°
Mercer County 24.6 mi, 152°
Worth County 37.7 mi, 241°


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

Iowa Notes

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