Last official estimated population of Decatur County was 25,795 (year 2014)[1]. This was 0.008% of total US population and 0.4% of total Indiana state population. Area of Decatur County is 373.3 mi² (=966.9 km²), in this year population density was 69.10 p/mi². If population growth rate would be same as in period 2010-2014 (+0.05%/yr), Decatur County population in 2024 would be 25,933 [0].
Historical population of Decatur County for period 1830-2014 [1] , [2] , [3]:
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.
Population • Density • Changes • Legends • Position
[1830-1840] +7.53 %/yr
[1840-1850] +2.18 %/yr
[1850-1860] +1.36 %/yr
[1860-1870] +0.97 %/yr
[1870-1880] +0.37 %/yr
[1880-1890] -0.26 %/yr
[1890-1900] +0.12 %/yr
[1900-1910] -0.38 %/yr
[1910-1920] -0.53 %/yr
[1920-1930] -0.29 %/yr
[1930-1940] +0.24 %/yr
[1940-1950] +0.28 %/yr
[1950-1960] +0.95 %/yr
[1960-1970] +1.28 %/yr
[1970-1980] +0.47 %/yr
[1980-1990] -0.08 %/yr
[1990-2000] +0.38 %/yr
[2000-2005] +0.66 %/yr
[2005-2010] +0.29 %/yr
[2010-2014] +0.05 %/yr
Looking for settlements in Decatur County? Visit this page: Settlements in Decatur County, IN
Population of Decatur County by age groups male (M) and female (F)[1b]
Age Gr. | (M) | (F) | Total |
0 to 4 | 811 | 768 | 1,579 |
5 to 9 | 912 | 884 | 1,796 |
10 to 14 | 1042 | 979 | 2,021 |
15 to 19 | 910 | 844 | 1,754 |
20 to 24 | 789 | 874 | 1,663 |
25 to 29 | 816 | 762 | 1,578 |
30 to 34 | 747 | 802 | 1,549 |
35 to 39 | 817 | 801 | 1,618 |
40 to 44 | 882 | 811 | 1,693 |
45 to 49 | 853 | 839 | 1,692 |
50 to 54 | 1007 | 981 | 1,988 |
55 to 59 | 951 | 944 | 1,895 |
60 to 64 | 805 | 816 | 1,621 |
65 to 69 | 618 | 692 | 1,310 |
70 to 74 | 405 | 512 | 917 |
75 to 79 | 347 | 421 | 768 |
80 to 84 | 201 | 325 | 526 |
85+ | 196 | 360 | 556 |
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 | 12855 | 13196 | 26,051 |
WAC | 12814 | 13137 | 25,951 |
WA | 12694 | 13038 | 25,732 |
NHWAC | 12586 | 12935 | 25,521 |
NHWA | 12478 | 12842 | 25,320 |
H | 254 | 219 | 473 |
HWAC | 228 | 202 | 430 |
HWA | 216 | 196 | 412 |
AAC | 194 | 204 | 398 |
NHAAC | 186 | 198 | 384 |
AA | 168 | 178 | 346 |
NHAA | 161 | 174 | 335 |
TOM | 125 | 105 | 230 |
BAC | 132 | 97 | 229 |
NHTOM | 112 | 99 | 211 |
NHBAC | 112 | 90 | 202 |
IAC | 80 | 75 | 155 |
BA | 89 | 56 | 145 |
NHIAC | 69 | 65 | 134 |
NHBA | 78 | 51 | 129 |
IA | 25 | 35 | 60 |
NHIA | 18 | 27 | 45 |
HBAC | 20 | 7 | 27 |
NAC | 17 | 9 | 26 |
NHNAC | 17 | 9 | 26 |
HIAC | 11 | 10 | 21 |
HTOM | 13 | 6 | 19 |
HBA | 11 | 5 | 16 |
HIA | 7 | 8 | 15 |
HAAC | 8 | 6 | 14 |
NA | 8 | 3 | 11 |
NHNA | 8 | 3 | 11 |
HAA | 7 | 4 | 11 |
HNAC | 0 | 0 | 0 |
HNA | 0 | 0 | 0 |
• Johnson County population
34.4 mi, 292°
• Bartholomew County
22.4 mi, 252°
• Dearborn County
30.2 mi, 111°
• Shelby County
21.7 mi, 314°
• Jefferson County
36.2 mi, 174°
• Ripley County
19.1 mi, 137°
• Jennings County
22.5 mi, 197°
• Fayette County
28.5 mi, 36°
• Franklin County
24.2 mi, 72°
• Rush County
21.9 mi, 4°
[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 Indiana Notes
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