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33,774 Zip Codes
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Connecticut County List
| County | State | Population |
|---|---|---|
| Capitol Planning Region, Connecticut | Connecticut | 969,029 |
| Western Connecticut Planning Region, Connecticut | Connecticut | 621,232 |
| South Central Connecticut Planning Region, Connecticut | Connecticut | 566,803 |
| Naugatuck Valley Planning Region, Connecticut | Connecticut | 452,303 |
| Greater Bridgeport Planning Region, Connecticut | Connecticut | 326,296 |
| Southeastern Connecticut Planning Region, Connecticut | Connecticut | 279,025 |
| Lower Connecticut River Valley Planning Region, Connecticut | Connecticut | 174,983 |
| Northwest Hills Planning Region, Connecticut | Connecticut | 112,848 |
| Northeastern Connecticut Planning Region, Connecticut | Connecticut | 95,829 |
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