| Sackville | 2756 | Macquarie | Hawkesbury | Hawkesbury City Council |
| Sackville North | 2756 | Berowra | Hawkesbury | The Hills Shire Council |
| Saddleback Mountain | 2533 | Gilmore | Kiama | The Council of the Municipality of Kiama |
| Sadleir | 2168 | Werriwa | Liverpool | Liverpool City Council |
| Safety Beach | 2456 | Page | Coffs Harbour | Coffs Harbour City Council |
| Salamander Bay | 2317 | Paterson | Port Stephens | Port Stephens Council |
| Salisbury | 2420 | Lyne | Upper Hunter | Dungog Shire Council |
| Salisbury Plains | 2358 | New England | Northern Tablelands | Uralla Shire Council |
| Sallys Flat | 2850 | Calare | Bathurst | Bathurst Regional Council |
| Salt Ash | 2318 | Paterson | Port Stephens | Port Stephens Council |
| Saltwater | 2430 | Lyne | Myall Lakes | Mid-Coast Council |
| San Isidore | 2650 | Riverina | Wagga Wagga | Wagga Wagga City Council |
| San Remo | 2262 | Shortland | Swansea | Central Coast Council |
| Sancrox | 2446 | Lyne | Port Macquarie | Port Macquarie-Hastings Council |
| Sanctuary Point | 2540 | Gilmore | South Coast | Shoalhaven City Council |
| Sandbar | 2428 | Lyne | Myall Lakes | Mid-Coast Council |
| Sandgate | 2304 | Newcastle | Newcastle | Newcastle City Council |
| Sandigo | 2700 | Farrer | Cootamundra | Narrandera Shire Council |
| Sandilands | 2469 | Page | Lismore | Kyogle Council |
| Sandon | 2463 | Page | Clarence | Clarence Valley Council |
| Sandringham | 2219 | Cook | Rockdale | Bayside Council |
| Sandy Beach | 2456 | Page | Coffs Harbour | Coffs Harbour City Council |
| Sandy Creek (Cobar) | 2835 | Parkes | Barwon | Cobar Shire Council |
| Sandy Creek (Upper Hunter Shire) | 2338 | New England | Upper Hunter | Upper Hunter Shire Council |
| Sandy Crossing | 2460 | Page | Clarence | Clarence Valley Council |
| Sandy Flat | 2372 | New England | Lismore | Tenterfield Shire Council |
| Sandy Gully | 2729 | Riverina | Wagga Wagga | Snowy Valleys Council |
| Sandy Hill | 2372 | New England | Lismore | Tenterfield Shire Council |
| Sandy Hollow | 2333 | New England | Upper Hunter | Muswellbrook Shire Council |
| Sandy Point | 2172 | Hughes | Holsworthy | Sutherland Shire Council |
| Sanger | 2646 | Farrer | Albury | Federation Council |
| Sans Souci | 2219 | Cook | Rockdale | Bayside Council 68% Georges River Council 31% |
| Sapphire | 2360 | New England | Northern Tablelands | Inverell Shire Council |
| Sapphire Beach | 2450 | Page | Coffs Harbour | Coffs Harbour City Council |
| Saratoga | 2251 | Robertson | Terrigal | Central Coast Council |
| Sassafras | 2622 | Gilmore | South Coast 90% Kiama 10% | Shoalhaven City Council |
| Saumarez | 2350 | New England | Northern Tablelands | Uralla Shire Council |
| Saumarez Ponds | 2350 | New England | Northern Tablelands | Uralla Shire Council |
| Savernake | 2646 | Farrer | Albury 64% Murray 36% | Federation Council 64% Berrigan Shire Council 36% |
| Sawpit Creek | 2474 | Page | Lismore | Kyogle Council |
| Sawtell | 2452 | Cowper | Coffs Harbour | Coffs Harbour City Council |
| Sawyers Gully | 2326 | Hunter 60% Paterson 40% | Cessnock | Cessnock City Council |
| Scarborough | 2515 | Cunningham | Heathcote | Wollongong City Council |
| Scheyville | 2756 | Macquarie | Hawkesbury | Hawkesbury City Council |
| Schofields | 2762 | Chifley 61% Greenway 39% | Riverstone 57% Londonderry 43% | Blacktown City Council |
| Scone | 2337 | New England | Upper Hunter | Upper Hunter Shire Council |
| Scotia | 2648 | Parkes 65% Farrer 35% | Barwon 65% Murray 35% | Unincorporated - Far West Area 65% Wentworth Shire Council 35% |
| Scotland Island | 2105 | Mackellar | Pittwater | Northern Beaches Council |
| Scotts Creek | 2338 | New England | Upper Hunter | Upper Hunter Shire Council |
| Scotts Flat | 2330 | Hunter | Upper Hunter | Singleton Council |
| Scotts Head | 2447 | Cowper | Oxley | Nambucca Valley Council |
| Seaforth | 2092 | Warringah | Manly | Northern Beaches Council |
| Seaham | 2324 | Lyne | Port Stephens | Port Stephens Council |
| Seahampton | 2286 | Hunter 61% Paterson 39% | Cessnock | Lake Macquarie City Council |
| Seal Rocks | 2423 | Lyne | Myall Lakes | Mid-Coast Council |
| Sebastopol | 2666 | Riverina | Cootamundra | Temora Shire Council |
| Sedgefield | 2330 | Hunter | Upper Hunter | Singleton Council |
| Seelands | 2460 | Page | Clarence | Clarence Valley Council |
| Sefton | 2162 | Blaxland | Auburn | Canterbury-Bankstown Council |
| Segenhoe | 2337 | New England | Upper Hunter | Upper Hunter Shire Council |
| Seven Hills | 2147 | McMahon 46% Parramatta 27% Greenway 27% | Winston Hills 55% Prospect 45% | Blacktown City Council |
| Seven Oaks | 2440 | Cowper | Oxley | Kempsey Shire Council |
| Sextonville | 2470 | Page | Lismore | Kyogle Council |
| Shadforth | 2800 | Calare | Orange | Orange City Council |
| Shallow Bay | 2428 | Lyne | Myall Lakes | Mid-Coast Council |
| Shalvey | 2770 | Chifley | Mount Druitt | Blacktown City Council |
| Shanes Park | 2747 | Chifley | Londonderry | Blacktown City Council |
| Shannon Brook | 2470 | Page | Clarence | Richmond Valley Council |
| Shannon Vale | 2370 | New England | Northern Tablelands | Glen Innes Severn Shire Council |
| Shannondale | 2460 | Page | Clarence | Clarence Valley Council |
| Shannons Flat | 2630 | Eden-Monaro | Monaro | Snowy Monaro Regional Council |
| Shark Creek | 2463 | Page | Clarence | Clarence Valley Council |
| Sharps Creek | 2729 | Riverina | Wagga Wagga | Snowy Valleys Council |
| Sheedys Gully | 2790 | Calare | Bathurst | Lithgow City Council |
| Shell Cove | 2529 | Whitlam | Shellharbour | Shellharbour City Council |
| Shellharbour | 2529 | Whitlam | Shellharbour | Shellharbour City Council |
| Shellharbour City Centre | 2529 | Whitlam | Shellharbour | Shellharbour City Council |
| Shelly Beach | 2261 | Dobell | The Entrance | Central Coast Council |
| Sherwood (Clarence Valley) | 2450 | Page | Clarence 79% Coffs Harbour 21% | Clarence Valley Council 79% Coffs Harbour City Council 21% |
| Sherwood (Kempsey) | 2440 | Cowper | Oxley | Kempsey Shire Council |
| Sherwood (Kyogle) | 2474 | Page | Lismore | Kyogle Council |
| Shoal Bay | 2315 | Paterson | Port Stephens | Port Stephens Council |
| Shoalhaven Heads | 2535 | Gilmore | Kiama | Shoalhaven City Council |
| Shooters Hill | 2787 | Calare | Bathurst | Oberon Council |
| Shortland | 2307 | Newcastle | Wallsend | Newcastle City Council |
| Silent Grove | 2372 | New England | Lismore | Tenterfield Shire Council |
| Silverdale | 2752 | Hume | Wollondilly | Wollondilly Shire Council |
| Silverton | 2880 | Parkes | Barwon | Unincorporated - Far West Area |
| Silverwater (Lake Macquarie) | 2264 | Hunter | Lake Macquarie | Lake Macquarie City Council |
| Silverwater (Parramatta) | 2128 | Reid | Parramatta | City of Parramatta Council |
| Simpkins Creek | 2469 | Page | Lismore | Kyogle Council |
| Singleton | 2330 | Hunter | Upper Hunter | Singleton Council |
| Singleton Heights | 2330 | Hunter | Upper Hunter | Singleton Council |
| Singleton Military Area | 2331 | Hunter | Upper Hunter | Singleton Council |
| Singletons Mill | 2775 | Berowra | Hornsby | The Council of the Shire of Hornsby |
| Six Mile Swamp | 2469 | Page | Clarence | Richmond Valley Council |
| Skennars Head | 2478 | Richmond | Ballina | Ballina Shire Council |
| Skillion Flat | 2440 | Cowper | Oxley | Kempsey Shire Council |
| Skinners Shoot | 2481 | Richmond | Ballina | Byron Shire Council |
| Sleepy Hollow | 2483 | Richmond | Tweed | Tweed Shire Council |
| Smeaton Grange | 2567 | Macarthur | Camden | Camden Council |
| Smiggin Holes | 2624 | Eden-Monaro | Monaro | Snowy Monaro Regional Council |
| Smithfield | 2164 | McMahon | Prospect 72% Fairfield 16% Granville 12% | Fairfield City Council 52% Cumberland Council 48% |
| Smiths Creek (Clarence Valley) | 2460 | Page | Clarence | Clarence Valley Council |
| Smiths Creek (Kyogle) | 2474 | Page | Lismore | Kyogle Council |
| Smiths Creek (Tweed) | 2484 | Richmond | Lismore | Tweed Shire Council |
| Smiths Lake | 2428 | Lyne | Myall Lakes | Mid-Coast Council |
| Smithtown | 2440 | Cowper | Oxley | Kempsey Shire Council |
| Snakes Plain | 2824 | Parkes | Barwon | Warren Shire Council |
| Snowball | 2622 | Eden-Monaro | Monaro | Queanbeyan-Palerang Regional Council |
| Snowy Plain | 2628 | Eden-Monaro | Monaro | Snowy Monaro Regional Council |
| Sodwalls | 2790 | Calare | Bathurst | Lithgow City Council |
| Sofala | 2795 | Calare | Bathurst | Mid-Western Regional Council 68% Bathurst Regional Council 32% |
| Soldiers Point | 2317 | Paterson | Port Stephens | Port Stephens Council |
| Somersby | 2250 | Robertson | Gosford | Central Coast Council |
| Somerton | 2340 | New England | Tamworth | Tamworth Regional Council |
| South Albury | 2640 | Farrer | Albury | Albury City Council |
| South Arm (Clarence Valley) | 2460 | Page | Clarence | Clarence Valley Council |
| South Arm (Nambucca Valley) | 2449 | Cowper | Oxley | Nambucca Valley Council |
| South Ballina | 2478 | Richmond | Ballina | Ballina Shire Council |
| South Bathurst | 2795 | Calare | Bathurst | Bathurst Regional Council |
| South Bowenfels | 2790 | Calare | Bathurst | Lithgow City Council |
| South Coogee | 2034 | Kingsford Smith | Coogee 76% Maroubra 24% | Randwick City Council |
| South Durras | 2536 | Gilmore | Bega | Eurobodalla Shire Council |
| South Golden Beach | 2483 | Richmond | Ballina | Byron Shire Council |
| South Grafton | 2460 | Page | Clarence | Clarence Valley Council |
| South Granville | 2142 | Blaxland | Granville | Cumberland Council |
| South Gundagai | 2722 | Riverina | Cootamundra | Cootamundra-Gundagai Regional Council |
| South Gundurimba | 2480 | Page | Lismore | Lismore City Council |
| South Guyra | 2365 | New England | Northern Tablelands | Armidale Regional Council |
| South Hurstville | 2221 | Banks 76% Barton 24% | Kogarah 53% Oatley 48% | Georges River Council |
| South Kempsey | 2440 | Cowper | Oxley | Kempsey Shire Council |
| South Lismore | 2480 | Page | Lismore | Lismore City Council |
| South Littleton | 2790 | Calare | Bathurst | Lithgow City Council |
| South Maitland | 2320 | Paterson | Maitland | Maitland City Council |
| South Maroota | 2756 | Berowra | Hawkesbury | The Hills Shire Council |
| South Murwillumbah | 2484 | Richmond | Lismore 77% Tweed 23% | Tweed Shire Council |
| South Nowra | 2541 | Gilmore | Kiama 61% South Coast 39% | Shoalhaven City Council |
| South Pambula | 2549 | Eden-Monaro | Bega | Bega Valley Shire Council |
| South Penrith | 2750 | Lindsay | Penrith | Penrith City Council |
| South Tamworth | 2340 | New England | Tamworth | Tamworth Regional Council |
| South Turramurra | 2074 | Bradfield | Wahroonga | Ku-ring-gai Council |
| South Wentworthville | 2145 | Blaxland 86% Parramatta 13% | Granville | Cumberland Council |
| South West Rocks | 2431 | Cowper | Oxley | Kempsey Shire Council |
| South Windsor | 2756 | Macquarie | Hawkesbury | Hawkesbury City Council |
| South Wolumla | 2550 | Eden-Monaro | Bega | Bega Valley Shire Council |
| Southampton | 2460 | Page | Clarence | Clarence Valley Council |
| Southgate | 2460 | Page | Clarence | Clarence Valley Council |
| Speers Point | 2284 | Shortland | Lake Macquarie | Lake Macquarie City Council |
| Speewa | 2735 | Farrer | Murray | Murray River Council |
| Spencer | 2775 | Robertson | Gosford | Central Coast Council |
| Spicers Creek | 2820 | Calare | Dubbo | Dubbo Regional Council |
| Spicketts Creek | 2454 | Cowper | Oxley | Bellingen Shire Council 58% Nambucca Valley Council 42% |
| Splitters Creek | 2640 | Farrer | Albury | Albury City Council |
| Spring Creek | 2800 | Calare | Orange | Orange City Council |
| Spring Farm | 2570 | Hume | Camden | Camden Council |
| Spring Flat | 2850 | Calare | Dubbo | Mid-Western Regional Council |
| Spring Grove | 2470 | Page | Clarence 86% Lismore 14% | Richmond Valley Council 86% Lismore City Council 14% |
| Spring Hill (Orange) | 2800 | Calare | Orange | Cabonne Shire Council 54% Orange City Council 46% |
| Spring Hill (Wollongong) | 2500 | Cunningham | Wollongong | Wollongong City Council |
| Spring Mountain | 2360 | New England | Northern Tablelands | Inverell Shire Council |
| Spring Plains | 2388 | Parkes | Barwon | Narrabri Shire Council |
| Spring Ridge | 2343 | New England 73% Parkes 27% | Tamworth | Liverpool Plains Shire Council 73% Gunnedah Shire Council 27% |
| Spring Terrace | 2798 | Calare | Orange | Cabonne Shire Council 83% Orange City Council 17% |
| Springdale | 2666 | Riverina | Cootamundra | Temora Shire Council |
| Springdale Heights | 2641 | Farrer | Albury | Albury City Council |
| Springfield (Central Coast) | 2250 | Robertson | Terrigal | Central Coast Council |
| Springfield (Snowy Monaro Regional) | 2630 | Eden-Monaro | Monaro | Snowy Monaro Regional Council |
| Springrange | 2618 | Riverina | Goulburn | Yass Valley Council |
| Springside | 2800 | Calare | Orange | Cabonne Shire Council 58% Orange City Council 42% |
| Springvale | 2650 | Riverina | Wagga Wagga | Wagga Wagga City Council |
| Springwood | 2777 | Macquarie | Blue Mountains | Blue Mountains City Council |
| St Albans | 2775 | Macquarie | Hawkesbury | Hawkesbury City Council |
| St Andrews | 2566 | Macarthur | Macquarie Fields | Campbelltown City Council |
| St Clair (Penrith) | 2759 | McMahon | Badgerys Creek | Penrith City Council |
| St Clair (Singleton) | 2330 | Hunter | Upper Hunter | Singleton Council |
| St Fillans | 2850 | Calare | Dubbo | Mid-Western Regional Council |
| St George | 2622 | Gilmore | Kiama | Shoalhaven City Council |
| St Georges Basin | 2540 | Gilmore | South Coast | Shoalhaven City Council |
| St Helens Park | 2560 | Macarthur | Campbelltown | Campbelltown City Council |
| St Huberts Island | 2257 | Robertson | Terrigal | Central Coast Council |
| St Ives | 2075 | Bradfield | Davidson | Ku-ring-gai Council |
| St Ives Chase | 2075 | Bradfield | Davidson | Ku-ring-gai Council |
| St Johns Park | 2176 | Fowler | Cabramatta | Fairfield City Council |
| St Leonards | 2065 | Bradfield 69% Bennelong 31% | Willoughby 59% Lane Cove 23% North Shore 19% | Willoughby City Council 58% Lane Cove Municipal Council 31% North Sydney Council 10% |
| St Marys | 2760 | Lindsay | Londonderry | Penrith City Council |
| St Peters | 2044 | Grayndler | Heffron | Inner West Council 83% Council of the City of Sydney 17% |
| Stanborough | 2360 | New England | Northern Tablelands | Inverell Shire Council |
| Stanbridge | 2705 | Farrer | Murray | Leeton Shire Council |
| Stanford Merthyr | 2327 | Hunter | Cessnock | Cessnock City Council |
| Stanhope | 2335 | Hunter | Upper Hunter | Singleton Council |
| Stanhope Gardens | 2768 | Greenway | Riverstone | Blacktown City Council |
| Stanmore | 2048 | Grayndler | Newtown | Inner West Council |
| Stannifer | 2369 | New England | Northern Tablelands | Inverell Shire Council |
| Stannum | 2371 | New England | Lismore 80% Northern Tablelands 20% | Tenterfield Shire Council 80% Glen Innes Severn Shire Council 20% |
| Stanwell Park | 2508 | Cunningham | Heathcote | Wollongong City Council |
| Stanwell Tops | 2508 | Cunningham | Heathcote | Wollongong City Council |
| State Mine Gully | 2790 | Calare | Bathurst | Lithgow City Council |
| Steam Plains | 2710 | Farrer | Murray | Edward River Council |
| Steeple Flat | 2631 | Eden-Monaro | Monaro 73% Bega 27% | Snowy Monaro Regional Council 73% Bega Valley Shire Council 27% |
| Stewarts Brook | 2337 | New England | Upper Hunter | Upper Hunter Shire Council |
| Stewarts River | 2443 | Lyne | Port Macquarie | Mid-Coast Council |
| Stockinbingal | 2725 | Riverina | Cootamundra | Cootamundra-Gundagai Regional Council 86% Temora Shire Council 14% |
| Stockrington | 2322 | Paterson 83% Hunter 17% | Cessnock | Cessnock City Council |
| Stockton | 2295 | Newcastle | Newcastle | Newcastle City Council |
| Stockyard Creek | 2460 | Page | Clarence | Clarence Valley Council |
| Stokers Siding | 2484 | Richmond | Lismore 79% Tweed 21% | Tweed Shire Council |
| Stonehenge | 2370 | New England | Northern Tablelands | Glen Innes Severn Shire Council |
| Stonequarry | 2580 | Riverina | Goulburn | Upper Lachlan Shire Council |
| Stony Chute | 2480 | Page | Lismore | Lismore City Council 90% Kyogle Council 10% |
| Stony Creek (Bega Valley) | 2550 | Eden-Monaro | Bega | Bega Valley Shire Council |
| Stony Creek (Mid-Western Regional) | 2850 | Calare | Dubbo | Mid-Western Regional Council |
| Stony Crossing | 2734 | Farrer | Murray | Murray River Council |
| Stotts Creek | 2487 | Richmond | Tweed | Tweed Shire Council |
| Stratford | 2422 | Lyne | Upper Hunter | Mid-Coast Council |
| Strathcedar | 2429 | Lyne | Myall Lakes | Mid-Coast Council |
| Stratheden | 2470 | Page | Clarence | Richmond Valley Council |
| Strathfield | 2135 | Reid | Strathfield | Strathfield Municipal Council 86% Burwood Council 12% |
| Strathfield South | 2136 | Watson | Strathfield | Strathfield Municipal Council |
| Stroud | 2425 | Lyne | Upper Hunter | Mid-Coast Council |
| Stroud Hill | 2420 | Lyne | Upper Hunter | Dungog Shire Council |
| Stroud Road | 2415 | Lyne | Upper Hunter | Mid-Coast Council |
| Stuart Town | 2820 | Calare | Dubbo | Dubbo Regional Council |
| Stuarts Point | 2441 | Cowper | Oxley | Kempsey Shire Council |
| Stubbo | 2852 | Calare | Dubbo | Mid-Western Regional Council |
| Stud Park | 2710 | Farrer | Murray | Edward River Council |
| Suffolk Park | 2481 | Richmond | Ballina | Byron Shire Council |
| Sugarloaf | 2420 | Lyne | Upper Hunter | Dungog Shire Council |
| Summer Hill (Dungog) | 2421 | Lyne | Upper Hunter | Dungog Shire Council |
| Summer Hill (Inner West) | 2130 | Grayndler | Summer Hill | Inner West Council |
| Summer Hill Creek | 2800 | Calare | Orange | Cabonne Shire Council |
| Summer Island | 2440 | Cowper | Oxley | Kempsey Shire Council |
| Summerland Point | 2259 | Shortland | Swansea | Central Coast Council |
| Sun Valley | 2777 | Macquarie | Blue Mountains | Blue Mountains City Council |
| Sunny Corner | 2795 | Calare | Bathurst | Bathurst Regional Council 83% Lithgow City Council 17% |
| Sunset Strip | 2879 | Parkes | Barwon | Central Darling Shire Council |
| Sunshine | 2264 | Hunter | Lake Macquarie | Lake Macquarie City Council |
| Sunshine Bay | 2536 | Gilmore | Bega | Eurobodalla Shire Council |
| Suntop | 2820 | Calare | Dubbo | Dubbo Regional Council |
| Surf Beach | 2536 | Gilmore | Bega | Eurobodalla Shire Council |
| Surfside | 2536 | Gilmore | Bega | Eurobodalla Shire Council |
| Surry Hills | 2010 | Sydney | Sydney | Council of the City of Sydney |
| Sussex Inlet | 2540 | Gilmore | South Coast | Shoalhaven City Council |
| Sutherland | 2232 | Hughes 83% Cook 16% | Heathcote 87% Miranda 13% | Sutherland Shire Council |
| Sutton | 2620 | Riverina 74% Eden-Monaro 26% | Goulburn 74% Monaro 26% | Yass Valley Council 74% Queanbeyan-Palerang Regional Council 26% |
| Sutton Forest | 2577 | Whitlam | Goulburn | Wingecarribee Shire Council |
| Swan Bay (Port Stephens) | 2324 | Paterson | Port Stephens | Port Stephens Council |
| Swan Bay (Richmond Valley) | 2471 | Page | Clarence | Richmond Valley Council |
| Swan Creek | 2462 | Page | Clarence | Clarence Valley Council |
| Swan Vale | 2370 | New England | Northern Tablelands | Inverell Shire Council |
| Swanbrook | 2360 | New England | Northern Tablelands | Inverell Shire Council |
| Swanhaven | 2540 | Gilmore | South Coast | Shoalhaven City Council |
| Swans Crossing | 2439 | Lyne | Port Macquarie | Port Macquarie-Hastings Council |
| Swansea | 2281 | Shortland | Swansea | Lake Macquarie City Council |
| Swansea Heads | 2281 | Shortland | Swansea | Lake Macquarie City Council |
| Sweetmans Creek | 2325 | Hunter | Cessnock | Cessnock City Council |
| Sydenham | 2044 | Grayndler | Heffron | Inner West Council |
| Sydney | 2000 | Sydney | Sydney | Council of the City of Sydney |
| Sydney Olympic Park | 2127 | Reid | Parramatta | City of Parramatta Council |
| Sylvania | 2224 | Cook | Miranda | Sutherland Shire Council |
| Sylvania Waters | 2224 | Cook | Miranda | Sutherland Shire Council |