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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Colby. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Colby, Kansas is approximatly 5450.
Racial profile for Colby:
| White : | 5272 |
| Black : | 35 |
| Native American : | 21 |
| Asian : | 21 |
| Pacific Islander : | 1 |
| Other : | 55 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Colby, Kansas :
| 18 - 19 : | 176 |
| 20 : | 75 |
| 21 : | 39 |
| 22 - 24 : | 110 |
| 25 - 29 : | 147 |
| 30 - 34 : | 134 |
| 35 - 39 : | 182 |
| 40 - 44 : | 197 |
| 45 - 49 : | 189 |
| 50 - 54 : | 134 |
| 55 - 59 : | 104 |
| 60 - 61 : | 37 |
| 62 - 64 : | 52 |
| 65 - 66 : | 43 |
| 67 - 69 : | 51 |
| 70 - 74 : | 70 |
| 75 - 79 : | 71 |
| 80 - 84 : | 53 |
| 85+ : | 32 |
Population by age for females in Colby, Kansas :
| 18 - 19 : | 197 |
| 20 : | 115 |
| 21 : | 58 |
| 22 - 24 : | 125 |
| 25 - 29 : | 152 |
| 30 - 34 : | 140 |
| 35 - 39 : | 183 |
| 40 - 44 : | 190 |
| 45 - 49 : | 196 |
| 50 - 54 : | 136 |
| 55 - 59 : | 116 |
| 60 - 61 : | 43 |
| 62 - 64 : | 68 |
| 65 - 66 : | 47 |
| 67 - 69 : | 58 |
| 70 - 74 : | 95 |
| 75 - 79 : | 121 |
| 80 - 84 : | 91 |
| 85+ : | 110 |
The total amount of households in Colby, Kansas is 2223. With 5169 people of the population in these households. The average household size is 2.33.
4043 people in Colby, Kansas are part of a family. The average family size in Colby is 2.96 people.
There are 989 married families in Colby, Kansas.
Number of married families by number of members in the family :
| 0 - 2 : | 134 | 3 - 4 : | 113 | 5 : | 47 | 6 - 11 : | 358 | 12 - 17 : | 337 |