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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Adelphi. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Adelphi, Maryland is approximatly 14998.
Racial profile for Adelphi:
| White : | 4421 |
| Black : | 5974 |
| Native American : | 42 |
| Asian : | 1493 |
| Pacific Islander : | 9 |
| Other : | 2255 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Adelphi, Maryland :
| 18 - 19 : | 217 |
| 20 : | 106 |
| 21 : | 149 |
| 22 - 24 : | 524 |
| 25 - 29 : | 812 |
| 30 - 34 : | 734 |
| 35 - 39 : | 650 |
| 40 - 44 : | 574 |
| 45 - 49 : | 463 |
| 50 - 54 : | 363 |
| 55 - 59 : | 278 |
| 60 - 61 : | 88 |
| 62 - 64 : | 136 |
| 65 - 66 : | 78 |
| 67 - 69 : | 99 |
| 70 - 74 : | 165 |
| 75 - 79 : | 139 |
| 80 - 84 : | 75 |
| 85+ : | 46 |
Population by age for females in Adelphi, Maryland :
| 18 - 19 : | 192 |
| 20 : | 152 |
| 21 : | 134 |
| 22 - 24 : | 470 |
| 25 - 29 : | 762 |
| 30 - 34 : | 686 |
| 35 - 39 : | 597 |
| 40 - 44 : | 542 |
| 45 - 49 : | 490 |
| 50 - 54 : | 458 |
| 55 - 59 : | 344 |
| 60 - 61 : | 101 |
| 62 - 64 : | 140 |
| 65 - 66 : | 94 |
| 67 - 69 : | 118 |
| 70 - 74 : | 217 |
| 75 - 79 : | 182 |
| 80 - 84 : | 110 |
| 85+ : | 106 |
The total amount of households in Adelphi, Maryland is 5332. With 14764 people of the population in these households. The average household size is 2.77.
11144 people in Adelphi, Maryland are part of a family. The average family size in Adelphi is 3.35 people.
There are 2062 married families in Adelphi, Maryland.
Number of married families by number of members in the family :
| 0 - 2 : | 422 | 3 - 4 : | 254 | 5 : | 123 | 6 - 11 : | 708 | 12 - 17 : | 555 |