| 994 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) | 
| 983 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) | 
| 835 | A New Dictionary of Kanji Usage | 
| 4768 | Classic Nelson (Andrew Nelson) | 
| 964 | Essential Kanji (P.G. O’Neill) | 
| 970 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) | 
| 524 | Kanji and Kana (Spahn and Hadamitzky) | 
| 533 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) | 
| 226 | Kanji in Context (Nishiguchi and Kono) | 
| 763 | Kodansha Compact Kanji Guide | 
| 2121 | Kodansha Kanji Dictionary (Jack Halpern) | 
| 1107 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) | 
| 1506 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) | 
| 1864 | Les Kanjis dans la tete (Yves Maniette) | 
| 39485 | Morohashi | 
| 1687 | New Japanese English Character Dictionary (Jack Halpern) | 
| 6147 | New Nelson (John Haig) | 
| 1847 | Remembering The Kanji (James Heisig) | 
| 1990 | Remembering The Kanji, 6th edition (James Heisig) | 
| 935 | Tuttle Kanji Cards (Alexander Kask) | 
      mail, stagecoach stop
    
    - On:
 - ユウ
 
      Jōyō kanji, taught in grade 6
    
    
      JLPT level N2
    
    
      917 of 2500 most used kanji in newspapers
    
Stroke order
On reading compounds
- 郵政省 【ユウセイショウ】 (former) Ministry of Posts and Telecommunications (now Ministry of Internal Affairs and Communications)
 - 郵政 【ユウセイ】 postal system
 - 電郵 【デンユウ】 (an item of) electronic mail (e-mail), e-mail message, electronic mail (e-mail) service, electronic mail (e-mail) system
 - 携帯電郵 【ケイタイデンユウ】 email from a cell phone or mobile phone
 
Readings
- Korean:
 - u
 
Spanish
- correo
 - servicio postal
 
Portuguese
- correio
 - parada de diligência
 
French
- courrier
 - relais de poste
 
| 2244 | 2001 Kanji | 
| 2d8.12 | The Kanji Dictionary | 
| 1-8-3 | SKIP code | 
| 1-8-2 | SKIP code | 
| 2712.7 | Four corner code | 
| 1-45-25 | JIS X 0208-1997 kuten code | 
| 90f5 | Unicode hex code |