Demographic Characteristics of Decatur County, Iowa
Total Population: 8,689
Decatur County, Iowa Age/Gender Statistics
 Male Population: 4,248 (48.89%) |
 Female Population: 4,441 (51.11%) |
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| Under 5 years | 481 | 45 to 54 years: | 1,040 |
| 5 to 9 years: | 545 | 55 to 59 years: | 427 |
| 10 to 14 years: | 589 | 60 to 64 years: | 397 |
| 15 to 19 years: | 886 | 65 to 74 years: | 749 |
| 20 to 24 years: | 914 | 75 to 84 years: | 542 |
| 25 to 34 years: | 797 | 85 years and over: | 244 |
| 35 to 44 years: | 1,078 | ||
| Median Age: 36.4 | |||
Decatur County, Iowa Racial Statistics
One Race
8,592
White
8,381
Black or African American
85
American Indian and Alaska Native
21
Asian
55
Asian Indian
5
Chinese
13
Filipino
6
Japanese
10
Korean
12
Vietnamese
1
Other Asian
8
Native Hawaiian and Other Pacific Islander
10
Native Hawaiian
7
Guamanian or Chamorro
0
Samoan
1
Other Pacific Islander
2
Some other race
40
Two or more races
97
Decatur County, Iowa Hispanic Population Statistics
| Total Hispanic or Latino Population: 148 | |||
| Mexican | Puerto Rican | Cuban | Other |
| 88 | 5 | 1 | 54 |
Decatur County, Iowa Relationship Statistics
| In households: 7,920 (91.15%) | In group quarters: 769 (8.85%) | ||
| Householder | 3,337 | Institutionalized | 106 |
| Spouse | 1,812 | Noninstitutionalized | 663 |
| Child | 2,182 | ||
| Own child under 18 years | 1,850 | ||
| Other relatives | 224 | ||
| Under 18 years | 89 | ||
| Nonrelatives | 365 | ||
| Unmarried partner | 129 | ||