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Issued by:
Ohio Department of Development , Office of Strategic Research
P.O. Box 1001, Columbus, Ohio 43266-0101, Telephone: (614) 466-2115, March, 1997
| COHORTS | 1990 | 1995 | 2000 | 2005 | 2010 | 2015 |
| 0-4 | 36,100 | 36,900 | 35,400 | 34,500 | 35,500 | 37,100 |
| 5-9 | 35,800 | 36,000 | 36,700 | 35,300 | 34,300 | 35,500 |
| 10-14 | 33,900 | 36,100 | 35,900 | 37,100 | 35,300 | 34,900 |
| 15-19 | 35,300 | 35,800 | 37,500 | 38,300 | 38,800 | 38,300 |
| 20-24 | 37,200 | 35,100 | 34,800 | 37,500 | 37,500 | 39,100 |
| 25-29 | 41,100 | 36,100 | 33,500 | 33,800 | 35,900 | 36,300 |
| 30-34 | 44,300 | 41,100 | 35,900 | 33,700 | 33,700 | 36,200 |
| 35-39 | 41,500 | 44,200 | 40,700 | 35,900 | 33,300 | 33,700 |
| 40-44 | 37,700 | 41,100 | 43,500 | 40,400 | 35,400 | 33,200 |
| 45-49 | 27,900 | 37,200 | 40,400 | 43,000 | 39,700 | 35,100 |
| 50-54 | 24,200 | 27,400 | 36,200 | 39,600 | 41,900 | 39,000 |
| 55-59 | 23,300 | 23,400 | 26,200 | 35,100 | 38,000 | 40,700 |
| 60-64 | 25,500 | 22,000 | 21,800 | 24,800 | 32,800 | 36,000 |
| 65-69 | 24,600 | 23,300 | 19,800 | 20,000 | 22,500 | 30,000 |
| 70-74 | 18,300 | 21,200 | 19,900 | 17,200 | 17,200 | 19,600 |
| 75-79 | 13,000 | 14,500 | 16,700 | 15,800 | 13,600 | 13,800 |
| 80-84 | 8,400 | 9,400 | 10,500 | 12,100 | 11,500 | 10,000 |
| 85+ | 6,900 | 6,800 | 7,300 | 7,900 | 8,900 | 9,000 |
| TOTAL | 515,000 | 527,600 | 532,700 | 542,000 | 545,800 | 557,600 |