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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Decorah. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Decorah, Iowa is approximatly 8172.
Racial profile for Decorah:
| White : | 7844 |
| Black : | 92 |
| Native American : | 8 |
| Asian : | 131 |
| Pacific Islander : | 1 |
| Other : | 34 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Decorah, Iowa :
| 18 - 19 : | 362 |
| 20 : | 257 |
| 21 : | 232 |
| 22 - 24 : | 281 |
| 25 - 29 : | 150 |
| 30 - 34 : | 172 |
| 35 - 39 : | 164 |
| 40 - 44 : | 212 |
| 45 - 49 : | 222 |
| 50 - 54 : | 187 |
| 55 - 59 : | 123 |
| 60 - 61 : | 53 |
| 62 - 64 : | 78 |
| 65 - 66 : | 55 |
| 67 - 69 : | 59 |
| 70 - 74 : | 154 |
| 75 - 79 : | 113 |
| 80 - 84 : | 93 |
| 85+ : | 89 |
Population by age for females in Decorah, Iowa :
| 18 - 19 : | 539 |
| 20 : | 353 |
| 21 : | 297 |
| 22 - 24 : | 249 |
| 25 - 29 : | 160 |
| 30 - 34 : | 158 |
| 35 - 39 : | 193 |
| 40 - 44 : | 245 |
| 45 - 49 : | 227 |
| 50 - 54 : | 194 |
| 55 - 59 : | 143 |
| 60 - 61 : | 77 |
| 62 - 64 : | 86 |
| 65 - 66 : | 55 |
| 67 - 69 : | 104 |
| 70 - 74 : | 196 |
| 75 - 79 : | 182 |
| 80 - 84 : | 192 |
| 85+ : | 244 |
The total amount of households in Decorah, Iowa is 2819. With 6009 people of the population in these households. The average household size is 2.13.
4383 people in Decorah, Iowa are part of a family. The average family size in Decorah is 2.80 people.
There are 972 married families in Decorah, Iowa.
Number of married families by number of members in the family :
| 0 - 2 : | 130 | 3 - 4 : | 95 | 5 : | 52 | 6 - 11 : | 296 | 12 - 17 : | 399 |