For a quick overview, Michael Dolan, in his November 2021 Fluoridation Review, listed this information on fluoridated cities and towns obtained from Fluoride Free New Zealand, 2020.
Fluoridated cities and towns:
Ashhurst, Auckland, Buckland, Clarks Beach, Dunedin, Feilding, Gisborne, Hamilton, Hawera, Hibiscus Coast (Orewa), Invercargill, Linton, Lower Hutt, Manukau, Masterton, Methven Township, Mosgiel, North Shore City, Palmerston North, Papakura, Paraparaumu, Patamahoe, Patea, Porirua, Pukekohe, Stratford, Taupo, Thames, Tokoroa, Turangi, Upper Hutt, Waiau Pa, Waikanae, Waitakere, Waverly, Wellington, Whakatane.
Non-fluoridated cities and towns:
Ahaura, Ahipara, Ahititi, Ahuroa, Aka Aka, Akaroa, Akitio, Albany, Albert Town, Albury, Alexandra, Allanton, Amberley, Anakiwa, Aramoana, Aranga, Arapohue, Arrowtown, Arundel, Ashburton, Ashley, Auroa, Awanui, Balclutha*, Balfour, Barrhill, Barrytown, Beachlands, Beaumont, Bell Block, Benhar, Bideford, Blackball, Blenheim, Bluff, Brighton, Brightwater, Broadwood, Bulls, Bunnythorpe, Burnt Hill, Cambridge, Canvastown, Carterton, Charlton, Cheviot, Christchurch, Clarksville, Clarkville, Clevedon, Clinton, Clive, Clyde, Coatesville, Collingwood, Colville, Coopers Creek, Coroglen, Coromandel, Cromwell, Culverden, Cust, Dairy Flat, Dannevirke, Darfield, Dargaville, Dipton, Dobson, Doyleston, Drury, Duntroon, Eastbourne, Edendale, Edgecumbe, Egmont Village, Eketahuna, Eltham, Ettrick, Eyrewell Forest, Fairhall, Fairlie, Fairfax, Featherston, Fernside, Flaxmere*, Flaxton, Fox Glacier, Foxton, Foxton Beach, Frankton (Otago), Frankton (Waikato), Franz Josef, Geraldine, Glen Massey, Glenorchy, Glentui, Gordonton, Gore, Granity, Greymouth, Greytown, Grovetown, Gummie Bush, Haast, Hakataramea, Halcombe, Hanmer Springs, Hari Hari, Harrisville, Haruru, Hastings*, Haupiri, Havelock North*, Helensville, Henley, Herbert, Herekino, Hikuai, Hikurangi, Hikutaia, Hinuera, Hokitika, Hope, Horeke, Horotiu, Horsham Downs, Houhora, Howick, Huapai, Huiakama, Huirangi, Hukerenui, Hunterville, Huntly*, Hurleyville, Inangahua Junction, Inglewood, Jack’s Point, Jacobs River, Kaeo, Kaiapoi, Kaihu, Kaikohe, Kaikoura, Kaimata, Kaingaroa, Kaipara Flats, Kairaki, Kaitaia, Kaitangata*, Kaiwaka, Kakanui, Kakaramea, Kaniere, Kapiro, Kaponga, Karamea, Karetu, Karitane, Katikati, Kaukapakapa, Kauri, Kawakawa, Kawerau, Kennedy Bay, Kerikeri, Kihikihi, Kingston, Kinloch, Kiripaka, Kirwee, Kohukohu, Koitiata, Kokatahi, Kokopu, Koromiko, Kumara, Kumeu, Kurow, Lake Hawea, Lake Tekapo, Lauriston, Lawrence, Leeston, Leigh, Lepperton, Levin, Lincoln, Linkwater, Little River, Loburn, Luggate, Lumsden, Lytteton, Makahu, Mamaku, Manaia (Coromandel), Manaia (Taranaki), Manakau, Manapouri, Mangakino, Mangamuka, Mangatangi, Mangatoki, Mangawhai, Maniaiti/Benneydale, Manurewa, Manutahi, Mapua, Maraetai, Marahau, Marco, Maromaku, Marsden Bay, Martinborough, Marton, Maruia, Matakana, Matakohe, Matamata, Milton*, Mimi, Minginui, Moana, Moawhango, Moenui, Moeraki, Moerewa, Mokau, Mokoia, Morrinsville, Mossburn, Motatau, Motueka, Mount Maunganui, Mount Somers, Murchison, Murupara, Napier, Naseby, National Park, Nelson, New Brighton, New Plymouth, Ngaere, Ngamatapouri, Ngapara, Ngaruawahia*, Ngataki, Ngatea, Ngongotaha, Ngunguru, Nightcaps, Norfolk, Normanby, Norsewood, ?akura, Oamaru, Oban, Ohaeawai, Ohakune, Ohangai, Ohoka, Ohope, Ohura, Okaihau, Okato, Okiwi Bay, Okuku, Omanaia, Omarama, Omata, Omokoroa, Onewhero, Opononi, Opotiki, Opua, Opunake, Oratia, Orewa, Oromahoe, Oruaiti, Otaika, Otaki, Otakou, Otautau, Otiria, Otorohanga, Owhango, Owaka, Oxford, Paekakariki, Paeroa, Pahiatua, Paihia, Pakaraka, Pakiri, Pakotai, Palmerston, Paeroa, Pamapuria, Panguru, Papamoa, Paparoa, Paptoetoe, Parakai, Paremoremo, Pareora, Paroa, Parua Bay, Pauanui, Pauatahanui, Pegasus, Peka Peka, Pembroke, Peria, Petone, Picton, Piopio, Pipiwai, Pirinoa, Pirongia, Pleasant Point, Plimmerton, Pokeno, Poroti, Port Chalmers, Portland, Portobello, Pukepoto, Pukerua Bay, Puketona, Pukeuri, Punakaiki, Purua, Putaruru, Putorino, Queenstown, Raetihi, Raglan, Rahotu, Rai Valley, Rakaia, Ramarama, Ranfurly, Rangiora, Rapaura, Ratapiko, Raumati Beach, Raumati South, Rawene, Rawhitiroa, Reefton, Renwick, Reporoa, Richmond, Riverhead, Riverlands, Riversdale, Riversdale Beach, Riverton, Riwaka, Rolleston, Ross, Rotorua, Roxburgh, Ruakaka, Ruatoria, Ruawai, Runanga, Russell, Saint Andrews, Saint Arnaud, Saint Bathans, Sanson, Seacliff, Seddon, Seddonville, Sefton, Shannon, Sheffield, Silverdale, Snells Beach, Spring Creek, Springfield, Springston, Stirling, Swannanoa, Taharoa, Taieri Mouth, Taihape, Taipa-Mangonui, Tairua, Takaka, Tangiteroria, Tangowahine, Tapanui*, Tapawera, Tapora, Tapu, Taradale, Tauhoa, Taumarunui, Taupaki, Tauranga, Tauraroa, Tautoro, Te Anau, Te, Arai, Te Aroha Te Awamutu, Te Awanga, Te Hapua, Te Horo, Te Kao, Te Kauwhata, Te Kopuru, Te Kuiti, Te Poi, Te Puke, Te Puru, te Rerenga, Temuka, Tikorangi, Timaru, Tinopai, Tinwald, Tirau, Titoki, Tokanui, Tokarahi, Toko, Tokomaru, Tolaga Bay, Tomarata, Towai, Tuahiwi, Tuai, Tuakau, Tuamarina, Tuatapere, Turua, Twizel, Umawera, Upper Moutere, Urenui, Uruti, View Hill, Waddington, Waharoa, Waiharara, Waiheke Island, Waihi, Waihi Beach, Waihola, Waikaia, Waikaka, Waikanae, Waikawa (Marlborough), Waikawa (Southland), Waikouaiti, Waikuku, Waikuku Beach, Waima, Waimangaroa, Waimate, Waimate North, Waimauku, Wainui, Wainuiomata, Waioneke, Waiotira, Waiouru, Waipango, Waipawa, Waipukurau, Wairakei, Wairau Valley, Wairio, Wairoa, Waitahuna, Waitara, Waitaria Bay, Waitati, Waitoa, Waitoki, Waitomo, Waitoriki, Waitotara, Waiuku, Waiwera, Wakefield, Wallacetown, Walton, Wanaka, Ward, Wardville, Warkworth, Warrington, Wellsford, Weston, Westport, Whakamura, Whananaki, Whangamata, Whangamomona, Whanganui, Whangaparaoa, Whangarei, Whangarei Heads, Whangaruru, Whataroa, Whatuwhiwhi, Whenuakite, Whenuakura, Whiritoa, Whitby, Whitford, Whitianga, Willowby, Wimbledon, Winchester, Windsor, Windwhistle, Winscombe, Winton, Woodend, Woodend Beach, Woodhill, Woodville, Wyndham (* temporarily suspended).