I made an unofficial Touhou height chart:

Touhou 6

  • Reimu: 167cm (5’ 5.8”)
  • Marisa: 162cm (5’ 3.8”)
  • Rumia: 151cm (4’ 11.5”)
  • Daiyousei: 156cm (5’ 1.5”)
  • Cirno: 155cm (5’ 1”)
  • Meiling: 190cm (6’ 3”)
  • Koakuma: 171cm (5’ 7.5”)
  • Patchouli: 163cm (5’ 4”)
  • Sakuya: 178cm (5’ 10”)
  • Remilia: 156cm (5’ 1.5”)
  • Flandre: 154cm (5’ 0.5”)

Touhou 7

  • Letty: 178cm (5’ 10”)
  • Chen: 148cm (4’ 10.5”)
  • Alice: 172cm (5’ 7.8”)
  • Lily White: 154cm (5’ 0.5”)
  • Merlin: 157cm (5’ 1.8”)
  • Lyrica: 162cm (5’ 3.8”)
  • Lunasa: 162cm (5’ 3.8”)
  • Youmu: 164cm (5’ 4.5”)
  • Yuyuko: 173cm (5’ 8”)
  • Ran: 187cm (6’ 1.5”)
  • Yukari: 180cm (5’ 10.8”)

Touhou 7.5

  • Suika: 157cm (5’ 1.8”) 20 meters (as a giant)

Touhou 8

  • Wriggle: 153cm (5’ 0”)
  • Mystia: 154cm (5’ 0.5”)
  • Keine: 181cm (5’ 11.3”)
  • Tewi: 154cm (5’ 0.5”)
  • Reisen: 170cm (5’ 7”)
  • Eirin: 181cm (5’ 11.3”)
  • Kaguya: 168cm (5’ 6”)
  • Mokou: 166cm (5’ 5.3”)

Touhou 9

  • Aya: 173cm (5’ 8”)
  • Medicine: 153cm (5’ 0”)
  • Yuuka: 184cm (6’ 0.5”)
  • Komachi: 187cm (6’ 1.5”)
  • Eiki: 163cm (5’ 4”)

Touhou 10

  • Shizuha: 167cm (5’ 5.8”)
  • Minoriko: 168cm (5’ 6”)
  • Hina: 166cm (5’ 5.3”)
  • Nitori: 156cm (5’ 1.5”)
  • Momiji: 172cm (5’ 7.8”)
  • Sanae: 169cm (5’ 6.5”)
  • Kanako: 193cm (6’ 4”)
  • Suwako: 157cm (5’ 1.8”)

Touhou 10.5

  • Tenshi: 165cm (5’ 5”)
  • Iku: 175cm (5’ 9”)

Touhou 11

  • Kisume: 153cm (5’ 0.3”)
  • Yamame: 162cm (5’ 3.8”)
  • Parsee: 171cm (5’ 7.3”)
  • Yuugi: 202cm (6’ 7.5”)
  • Satori: 158cm (5’ 2”)
  • Rin: 171cm (5’ 7.3”)
  • Utsuho: 185cm (6’ 0.8”)
  • Koishi: 156cm (5’ 1.5”)

Touhou 12

  • Nazrin: 153cm (5’ 0.3”)
  • Kogasa: 165cm (5’ 5”)
  • Ichirin: 171cm (5’ 7.3”)
  • Murasa: 168cm (5’ 6”)
  • Shou: 187cm (6’ 1.5”)
  • Byakuren: 178cm (5’ 10”)
  • Nue: 168cm (5’ 6”)

Touhou 12.5

  • Hatate: 174cm (5’ 8.5”)

Touhou 13

  • Kyouko: 153cm (5’ 0.3”)
  • Yoshika: 161cm (5’ 3.3”)
  • Seiga: 174cm (5’ 8.5”)
  • Tojiko: 171cm (5’ 7.3”)
  • Futo: 160cm (5’ 3”)
  • Miko: 171cm (5’ 7.3”)
  • Mamizou: 172cm (5’ 7.8”)

Touhou 13.5

  • Kokoro: 168cm (5’ 6”)

Touhou 14

  • Wakasagihime: 231cm (7’ 7”) (remember she has long tail)
  • Sekibanki: 168cm (5’ 6”)
  • Kagerou: 185cm (6’ 0.8”)
  • Benben: 172cm (5’ 7.8”)
  • Yatsuhashi: 168cm (5’ 6”)
  • Seija: 168cm (5’ 6”)
  • Sukuna: 15cm (6 in.) or 150cm (4’ 11”)
  • Raiko: 172cm (5’ 7.8”)

Touhou 14.5

  • Kasen: 186cm (6’ 1”)

Touhou 15

  • Reiran: 158cm (5’ 2”)
  • Ringo: 157cm (5’ 1.8”)
  • Doremy: 175cm (5’ 8”)
  • Sagume: 177cm (5’ 9.8”)
  • Clownpiece: 158cm (5’ 2”)
  • Junko: 188cm (6’ 2”)
  • Hecatia: 175cm (5’ 9”)

Touhou 15.5

  • Sumireko: 165cm (5’ 5”)
  • Joon: 162cm (5’ 3.8”)
  • Shion: 168cm (5’ 6”)

Touhou 16

  • Larva: 156cm (5’ 1.5”)
  • Nemuno: 185cm (6’ 0.8”)
  • Aunn: 158cm (5’ 2.3”)
  • Narumi: 168cm (5’ 6”)
  • Mai: 167cm (5’ 5.8”)
  • Satono: 165cm (5’ 5”)
  • Okina: 173cm (5’ 8”)

Touhou 17

  • Eika: 163cm (5’ 4”)
  • Urumi: 185cm (6’ 0.8”)
  • Kutaka: 171cm (5’ 7.3”)
  • Yachie: 177cm (5’ 9.8”)
  • Mayumi: 172cm (5’ 7.8”)
  • Keiki: 175cm (5’ 9”)
  • Saki: 188cm (6’ 2”)

Touhou 17.5

  • Yuuma: 162cm (5’ 3.8”)

Touhou 18

  • Mike: 167cm (5’ 5.8”)
  • Takane: 163cm (5’ 4”)
  • Sannyo: 178cm (5’ 10”)
  • Misumaru: 174cm (5’ 8.5”)
  • Tsukasa: 165cm (5’ 5”)
  • Megumu: 172cm (5’ 7.8”)
  • Tenkyu: 172cm (5’ 7.8”)
  • Momoyo: 178cm (5’ 10”)

Others

  • Sunny: 155cm (5’ 1”)
  • Luna: 156cm (5’ 1.5”)
  • Star: 156cm (5’ 1.5”)
  • Rei’sen: 160cm (5’ 3”)
  • Yorihime: 178cm (5’ 10”)
  • Toyohime: 177cm (5’ 9.8”)
  • Miyoi: 186cm (6’ 1”)
  • Renko: 171cm (5’ 7.3”)
  • Maribel: 167cm (5’ 5.8”)
  • Rinnosuke: 195cm (6’ 4.8”)

Special

  • Youki Konpaku: 186cm (6’ 1”)
  • Previous Miko: 190cm (6’ 2.8”)
  • Myouren Hijiri: 193cm (6’ 4”)
  • Mima: 191cm (6’ 3”)
  • Sariel: 202cm (6’ 7.5”)