We have implemented Connecticut’s new planning districts over the former county names in our product.
Download the full table.
| Zip Code | State | FIPS Code | State FIPS | County FIPS | County Name | Old County FIPS | Old County FIPS |
| 06001 | CT | 09110 | 09 | 110 | Capitol | 003 | Hartford |
| 06468 | CT | 09120 | 09 | 120 | Greater Bridgeport | 001 | Fairfield |
| 06333 | CT | 09130 | 09 | 130 | Lower CT River Valley | 011 | New London |
| 06010 | CT | 09140 | 09 | 140 | Naugatuck Valley | 003 | Hartford |
| 06230 | CT | 09150 | 09 | 150 | Northeastern CT | 015 | Windham |
| 06018 | CT | 09160 | 09 | 160 | Northwest Hills | 005 | Litchfield |
| 06405 | CT | 09170 | 09 | 170 | South Central CT | 009 | New Haven |
| 06249 | CT | 09180 | 09 | 180 | Southeastern CT | 011 | New London |
| 06404 | CT | 09190 | 09 | 190 | Western CT | 001 | Fairfield |
