| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sachem Head | city | Connecticut | United States | 41.25 | -72.70 | 0 | |
| Salem | city | Connecticut | United States | 41.49 | -72.28 | 347 | |
| Salisbury | city | Connecticut | United States | 41.98 | -73.42 | 830 | |
| Salmon Brook | city | Connecticut | United States | 41.96 | -72.80 | 200 | |
| Sandy Beach | city | Connecticut | United States | 41.69 | -73.22 | 1000 | |
| Sandy Hook | city | Connecticut | United States | 41.42 | -73.28 | 272 | |
| Sandy Point | city | Connecticut | United States | 41.35 | -72.18 | 19 | |
| Sanfordtown | city | Connecticut | United States | 41.29 | -73.36 | 830 | |
| Saugatuck | city | Connecticut | United States | 41.12 | -73.37 | 29 | |
| Saugatuck Shores | city | Connecticut | United States | 41.10 | -73.37 | 0 | |
| Saunders Point | city | Connecticut | United States | 41.34 | -72.19 | 19 | |
| Savin Rock | city | Connecticut | United States | 41.26 | -72.95 | 0 | |
| Saybrook Manor | city | Connecticut | United States | 41.29 | -72.40 | 6 | |
| Saybrook Point | city | Connecticut | United States | 41.28 | -72.35 | 0 | |
| Saybrooke Village | city | Connecticut | United States | 41.75 | -72.70 | 88 | |
| Scantic | city | Connecticut | United States | 41.90 | -72.55 | 167 | |
| Schoonhoven Park | city | Connecticut | United States | 41.14 | -73.23 | 0 | |
| Scitico | city | Connecticut | United States | 41.98 | -72.52 | 173 | |
| Scotland | city | Connecticut | United States | 41.70 | -72.08 | 288 | |
| Scovill Landing | city | Connecticut | United States | 41.49 | -72.47 | 137 | |
| Sea Bluff | city | Connecticut | United States | 41.25 | -72.96 | 0 | |
| Seaside | city | Connecticut | United States | 41.30 | -72.13 | 0 | |
| Seaside | city | Connecticut | United States | 41.30 | -72.13 | 0 | |
| Seaview Beach | city | Connecticut | United States | 41.27 | -72.58 | 0 | |
| Selleck Four Corners (historical) | city | Connecticut | United States | 41.30 | -73.40 | 288 | |
| Sellecks Corners | city | Connecticut | United States | 41.19 | -73.53 | 396 | |
| Seymour | city | Connecticut | United States | 41.40 | -73.08 | 95 | |
| Shady Rest | city | Connecticut | United States | 41.45 | -73.28 | 200 | |
| Shailerville | city | Connecticut | United States | 41.47 | -72.50 | 3 | |
| Shaker Pines | city | Connecticut | United States | 42.03 | -72.54 | 180 | |
| Sharon | city | Connecticut | United States | 41.88 | -73.48 | 830 | |
| Sharon Valley | city | Connecticut | United States | 41.88 | -73.49 | 830 | |
| Shelton | city | Connecticut | United States | 41.32 | -73.09 | 42 | |
| Sherman | city | Connecticut | United States | 41.58 | -73.50 | 830 | |
| Sherman Corner | city | Connecticut | United States | 41.77 | -72.14 | 403 | |
| Sherwood Manor | city | Connecticut | United States | 42.01 | -72.56 | 167 | |
| Shewville | city | Connecticut | United States | 41.49 | -71.99 | 154 | |
| Shippan Point | city | Connecticut | United States | 41.03 | -73.52 | 0 | |
| Shorehaven | city | Connecticut | United States | 41.09 | -73.39 | 0 | |
| Short Beach | city | Connecticut | United States | 41.26 | -72.84 | 13 | |
| Showtucket (historical) | city | Connecticut | United States | 41.56 | -72.05 | 36 | |
| Silver Beach | city | Connecticut | United States | 41.20 | -73.06 | 0 | |
| Silver Falls | city | Connecticut | United States | 41.41 | -72.22 | 193 | |
| Silvermine | city | Connecticut | United States | 41.15 | -73.45 | 160 | |
| Silvermine Acres | city | Connecticut | United States | 41.83 | -72.91 | 396 | |
| Simsbury | city | Connecticut | United States | 41.88 | -72.80 | 187 | |
| Simsbury Center | city | Connecticut | United States | 41.88 | -72.80 | 187 | |
| Skinnerville | city | Connecticut | United States | 41.56 | -72.51 | 396 | |
| Slineyville (historical) | city | Connecticut | United States | 41.30 | -72.92 | 0 | |
| Smith Corner | city | Connecticut | United States | 41.59 | -72.13 | 360 | |
| Smith Tower Housing | city | Connecticut | United States | 41.76 | -72.67 | 45 | |
| Snug Harbor | city | Connecticut | United States | 41.44 | -73.45 | 830 | |
| Sodom | city | Connecticut | United States | 42.04 | -73.30 | 830 | |
| Somers | city | Connecticut | United States | 41.99 | -72.45 | 269 | |
| Somersville | city | Connecticut | United States | 41.98 | -72.49 | 160 | |
| Sound View | city | Connecticut | United States | 41.29 | -72.29 | 42 | |
| South Britain | city | Connecticut | United States | 41.47 | -73.25 | 396 | |
| South Canaan | city | Connecticut | United States | 41.96 | -73.33 | 830 | |
| South Chaplin | city | Connecticut | United States | 41.78 | -72.13 | 344 | |
| South Coventry | city | Connecticut | United States | 41.77 | -72.31 | 830 | |
| South Ellsworth | city | Connecticut | United States | 41.82 | -73.43 | 1217 | |
| South End | city | Connecticut | United States | 41.24 | -72.89 | 0 | |
| South End | city | Connecticut | United States | 41.04 | -73.54 | 16 | |
| South Farms | city | Connecticut | United States | 41.55 | -72.64 | 9 | |
| South Glastonbury | city | Connecticut | United States | 41.67 | -72.60 | 98 | |
| South Kent | city | Connecticut | United States | 41.68 | -73.47 | 830 | |
| South Killingly | city | Connecticut | United States | 41.79 | -71.83 | 830 | |
| South Lyme | city | Connecticut | United States | 41.31 | -72.26 | 68 | |
| South Meriden | city | Connecticut | United States | 41.52 | -72.83 | 104 | |
| South Norfolk | city | Connecticut | United States | 41.92 | -73.21 | 1131 | |
| South Norwalk | city | Connecticut | United States | 41.09 | -73.42 | 16 | |
| South Wethersfield | city | Connecticut | United States | 41.69 | -72.66 | 59 | |
| South Willington | city | Connecticut | United States | 41.86 | -72.30 | 830 | |
| South Wilton | city | Connecticut | United States | 41.17 | -73.42 | 200 | |
| South Windham | city | Connecticut | United States | 41.68 | -72.17 | 200 | |
| South Windsor | city | Connecticut | United States | 41.82 | -72.62 | 59 | |
| South Woodstock | city | Connecticut | United States | 41.94 | -71.96 | 347 | |
| Southbury | city | Connecticut | United States | 41.48 | -73.21 | 229 | |
| Southford | city | Connecticut | United States | 41.46 | -73.16 | 830 | |
| Southington | city | Connecticut | United States | 41.60 | -72.88 | 196 | |
| Southport | city | Connecticut | United States | 41.14 | -73.28 | 3 | |
| Southwood Acres | city | Connecticut | United States | 41.96 | -72.57 | 134 | |
| Spoonville | city | Connecticut | United States | 41.90 | -72.74 | 108 | |
| Spoonville (historical) | city | Connecticut | United States | 41.90 | -72.75 | 98 | |
| Spring Glen | city | Connecticut | United States | 41.36 | -72.91 | 98 | |
| Spring Hill | city | Connecticut | United States | 41.79 | -72.22 | 830 | |
| Spring Village | city | Connecticut | United States | 41.92 | -72.62 | 68 | |
| Springdale | city | Connecticut | United States | 41.09 | -73.52 | 104 | |
| Spruce Corner (historical) | city | Connecticut | United States | 41.33 | -72.59 | 124 | |
| Stafford | city | Connecticut | United States | 41.98 | -72.29 | 830 | |
| Stafford Springs | city | Connecticut | United States | 41.95 | -72.30 | 830 | |
| Staffordville | city | Connecticut | United States | 41.99 | -72.26 | 830 | |
| Stamford | city | Connecticut | United States | 41.05 | -73.54 | 22 | |
| Stamfordas | city | Connecticut | United States | 41.05 | -73.54 | 22 | |
| Stanwich | city | Connecticut | United States | 41.12 | -73.62 | 393 | |
| Stemford | city | Connecticut | United States | 41.05 | -73.54 | 22 | |
| Stepney | city | Connecticut | United States | 41.30 | -73.25 | 400 | |
| Sterling | city | Connecticut | United States | 41.71 | -71.83 | 393 | |
| Sterling City | city | Connecticut | United States | 41.38 | -72.34 | 68 | |
| Stetson Corner | city | Connecticut | United States | 41.79 | -72.01 | 830 | |
| Stevenson | city | Connecticut | United States | 41.38 | -73.18 | 190 | |
| Stillmans Corner | city | Connecticut | United States | 41.56 | -72.86 | 223 | |
| Stonington | city | Connecticut | United States | 41.34 | -71.91 | 0 | |
| Stony Creek | city | Connecticut | United States | 41.26 | -72.75 | 9 | |
| Storrs | city | Connecticut | United States | 41.81 | -72.25 | 830 | |
| Stowe Village Housing Project | city | Connecticut | United States | 41.79 | -72.67 | 55 | |
| Straitsville | city | Connecticut | United States | 41.47 | -73.03 | 291 | |
| Stratfield | city | Connecticut | United States | 41.21 | -73.24 | 180 | |
| Stratford | city | Connecticut | United States | 41.18 | -73.13 | 26 | |
| Strathmore Woods | city | Connecticut | United States | 41.49 | -72.89 | 298 | |
| Suffield | city | Connecticut | United States | 41.98 | -72.65 | 131 | |
| Suffield Depot | city | Connecticut | United States | 41.98 | -72.65 | 131 | |
| Sunnyside | city | Connecticut | United States | 41.30 | -73.07 | 98 | |
| Sunnyside (historical) | city | Connecticut | United States | 41.52 | -72.07 | 298 | |
| Sunnyside Trailer Park | city | Connecticut | United States | 41.29 | -73.07 | 196 |