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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 | 9,400 | 9,400 | 9,400 | 9,500 | 9,400 | 9,500 |
| 5-9 | 10,100 | 9,700 | 9,700 | 9,700 | 9,900 | 9,800 |
| 10-14 | 9,700 | 10,000 | 9,600 | 9,600 | 9,600 | 9,800 |
| 15-19 | 13,700 | 13,600 | 14,300 | 14,200 | 14,600 | 15,000 |
| 20-24 | 17,000 | 16,500 | 16,600 | 17,100 | 17,200 | 17,500 |
| 25-29 | 11,300 | 13,100 | 12,400 | 12,300 | 12,600 | 12,300 |
| 30-34 | 11,700 | 9,400 | 11,500 | 10,600 | 10,800 | 10,900 |
| 35-39 | 11,000 | 11,000 | 8,800 | 10,800 | 10,100 | 10,200 |
| 40-44 | 9,700 | 10,500 | 10,600 | 8,300 | 10,400 | 9,600 |
| 45-49 | 7,800 | 9,400 | 10,200 | 10,300 | 8,100 | 10,100 |
| 50-54 | 6,300 | 7,500 | 9,000 | 9,800 | 9,900 | 7,800 |
| 55-59 | 6,000 | 5,900 | 7,100 | 8,600 | 9,300 | 9,400 |
| 60-64 | 5,500 | 5,500 | 5,400 | 6,500 | 8,000 | 8,600 |
| 65-69 | 4,800 | 4,800 | 4,800 | 4,700 | 5,800 | 7,000 |
| 70-74 | 3,400 | 4,000 | 4,000 | 4,000 | 3,900 | 4,800 |
| 75-79 | 2,500 | 2,900 | 3,300 | 3,300 | 3,300 | 3,300 |
| 80-84 | 1,500 | 1,800 | 2,000 | 2,300 | 2,400 | 2,400 |
| 85+ | 1,100 | 1,600 | 2,000 | 2,200 | 2,400 | 2,500 |
| TOTAL | 142,600 | 146,400 | 150,700 | 153,800 | 157,600 | 160,600 |