14 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| New Haven | 1 | 141,686 | 129,314 | 1.48% | 7,581 | 19 | City |
| Hamden | 2 | 61,708 | 60,736 | 0.16% | 1,891 | 33 | Township |
| Meriden | 3 | 60,962 | 60,622 | 0.09% | 2,569 | 24 | City |
| West Haven | 4 | 55,292 | 55,553 | -0.08% | 5,143 | 11 | City |
| Wallingford | 5 | 44,651 | 44,533 | 0.29% | 1,140 | 39 | Township |
| Branford | 6 | 28,890 | 28,132 | 0.77% | 1,323 | 22 | Township |
| East Haven | 7 | 28,391 | 27,832 | 0.78% | 2,309 | 12 | Township |
| North Haven | 8 | 25,698 | 24,129 | 1.69% | 1,233 | 21 | Township |
| Guilford | 9 | 22,486 | 22,021 | 0.5% | 478 | 47 | Township |
| Madison | 10 | 17,898 | 17,618 | 0.59% | 495 | 36 | Township |
| Orange | 11 | 14,493 | 14,229 | 0.21% | 844 | 17 | Township |
| North Branford | 12 | 13,653 | 13,504 | 0.37% | 551 | 25 | Township |
| Woodbridge | 13 | 9,264 | 9,057 | 0.73% | 492 | 19 | Township |
| Bethany | 14 | 5,372 | 5,281 | 0.45% | 255 | 21 | Township |
New Haven is the largest city in South Central CT Planning Region, with a population of 141,686.
Bethany is the smallest city in South Central CT Planning Region, with a population of 5,372.
There are 14 cities in South Central CT Planning Region, Connecticut.