1970
County Total: 816,737
- Hartford (city) 158,017
- New Britain (city) 83,441
- West Hartford 68,031
- East Hartford 57,583
- Bristol (city) 55,487
- Manchester 47,994
- Enfield 46,189
- Southington 30,946
- Wethersfield 26,662
- Newington 26,037
- Windsor 22,502
- Glastonbury 20,651
- Bloomfield 18,301
- Simsbury 17,475
- Plainville 16,733
- South Windsor 15,553
- Windsor Locks 15,080
- Farmington 14,390
- Berlin 14,149
- Rocky Hill 11,103
- Suffield 8,634
- East Windsor 8,513
- Avon 8,352
- Canton 6,868
- Granby 6,150
- Burlington 4,070
- East Granby 3,532
- Marlborough 2,991
- Hartland 1,303
Read more about this topic: Historical United States Census Totals For Hartford County, Connecticut