Croydon Population Estimates by age bands
| Age (years) | Numbers |
| 0-4 years | 28,652 |
| 5-10 years | 32,796 |
| 11-17 years | 32,997 |
| 18-64 years | 238,608 |
| 65+ years | 50,248 |
| Total Population | 383,301 |
Source : ONS, Mid Year Population Estimates, 2016, revised March 2018.
Croydon Population Estimates by single year of age
| Age (years) | Numbers | Age (years) | Numbers | Age (years) | Numbers |
|
0 |
6,012 | 31 | 5,877 | 61 | 3,841 |
| 1 | 5,708 | 32 | 5,706 | 62 | 3,571 |
| 2 | 5,601 | 33 | 5,899 | 63 | 3,341 |
| 3 | 5,650 | 34 | 6,374 | 64 | 3,381 |
| 4 | 5,681 | 35 | 6,115 | 65 | 3,142 |
| 5 | 5,675 | 36 | 6,002 | 66 | 2,995 |
| 6 | 5,608 | 37 | 6,019 | 67 | 2,897 |
| 7 | 5,442 | 38 | 5,662 | 68 | 3,161 |
| 8 | 5,659 | 39 | 5,558 | 69 | 3,344 |
| 9 | 5,365 | 40 | 5,536 | 70 | 2,591 |
| 10 | 5,047 | 41 | 5,464 | 71 | 2,332 |
| 11 | 4,892 | 42 | 5,117 | 72 | 2,331 |
| 12 | 4,705 | 43 | 5,105 | 73 | 2,277 |
| 13 | 4,594 | 44 | 5,444 | 74 | 2,029 |
| 14 | 4,486 | 45 | 5,479 | 75 | 1,819 |
| 15 | 4,562 | 46 | 5,274 | 76 | 1,903 |
| 16 | 4,810 | 47 | 5,503 | 77 | 1,863 |
| 17 | 4,948 | 48 | 5,420 | 78 | 1,859 |
| 18 | 4,636 | 49 | 5,419 | 79 | 1,772 |
| 19 | 3,845 | 50 | 5,943 | 80 | 1,673 |
| 20 | 3,628 | 51 | 5,669 | 81 | 1,569 |
| 21 | 3,606 | 52 | 5,758 | 82 | 1,444 |
| 22 | 3,961 | 53 | 5,658 | 83 | 1,286 |
| 23 | 4,396 | 54 | 5,373 | 84 | 1,218 |
| 24 | 4,753 | 55 | 4,880 | 85 | 1,071 |
| 25 | 5,334 | 56 | 4,791 | 86 | 947 |
| 26 | 5,313 | 57 | 4,525 | 87 | 813 |
| 27 | 5,594 | 58 | 4,219 | 88 | 752 |
| 28 | 5,710 | 59 | 4,002 | 89 | 655 |
| 29 | 5,792 | 60 | 3,943 | 90+ | 2,505 |
| 30 | 6,083 |
Source : ONS, Mid Year Population Estimates, 2016, Revised March 2018.