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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 | 14,900 | 15,500 | 14,100 | 12,800 | 12,400 | 13,100 |
| 5-9 | 15,000 | 15,400 | 16,100 | 14,600 | 13,400 | 13,100 |
| 10-14 | 15,000 | 15,100 | 15,500 | 16,200 | 14,800 | 13,600 |
| 15-19 | 14,400 | 13,900 | 14,200 | 14,700 | 15,700 | 14,400 |
| 20-24 | 14,000 | 11,600 | 11,600 | 12,100 | 13,300 | 14,700 |
| 25-29 | 17,600 | 12,900 | 10,700 | 10,800 | 11,500 | 12,900 |
| 30-34 | 19,800 | 20,200 | 15,700 | 13,600 | 14,000 | 14,800 |
| 35-39 | 17,800 | 19,900 | 20,300 | 15,900 | 13,800 | 14,100 |
| 40-44 | 16,500 | 17,000 | 19,200 | 19,600 | 15,400 | 13,400 |
| 45-49 | 13,800 | 15,900 | 16,500 | 18,600 | 19,200 | 15,100 |
| 50-54 | 10,700 | 13,100 | 15,200 | 15,800 | 18,000 | 18,600 |
| 55-59 | 10,000 | 9,900 | 12,300 | 14,400 | 15,100 | 17,200 |
| 60-64 | 10,200 | 8,900 | 8,900 | 11,200 | 13,300 | 14,000 |
| 65-69 | 9,400 | 8,800 | 7,700 | 7,800 | 9,900 | 11,900 |
| 70-74 | 6,800 | 7,900 | 7,400 | 6,500 | 6,600 | 8,500 |
| 75-79 | 4,700 | 5,600 | 6,500 | 6,100 | 5,500 | 5,600 |
| 80-84 | 2,800 | 3,600 | 4,200 | 4,900 | 4,600 | 4,200 |
| 85+ | 2,100 | 3,300 | 4,100 | 4,700 | 5,200 | 5,400 |
| TOTAL | 215,500 | 218,500 | 220,300 | 220,200 | 221,700 | 224,700 |