Mexico Accent Mark: México in Spanish, Mexico in English

The Mexico accent mark belongs to Spanish spelling, and English leaves it off.

The table sets the Spanish and the English verdicts side by side, each read from a page that answered AccentPad on 2026-10-18. The Diccionario panhispánico de dudas, the Spanish academies' guide, refused its own web page that day (HTTP 403). Its México entry is quoted from the press dossier the RAE publishes for the dictionary, which reprints the entry whole.

Merriam-Webster and Britannica refused as well, and nothing here comes from them.

Why does México take an accent in Spanish?

Because of where the stress falls. Wiktionary splits the word Mé-xi-co, and the stress is on the first of those syllables, the third from the end. Spanish writes the mark on every word stressed there: FundéuRAE explains that imagen gains a tilde in the plural, imágenes, for exactly that reason. Without the é, a Spanish reader would stress xi.

The mark records stress, not a sound of its own, so it comes and goes inside one family of words:

Word	Syllables	Stressed syllable	Written accent	Source
México	Mé-xi-co	the third from the end	yes	Wiktionary
Méjico	Mé-ji-co	the third from the end	yes	Wiktionary
mexicano	me-xi-ca-no	ca, next to last: [mejikáno]	no	Diccionario panhispánico de dudas

So the adjective is plain mexicano, and the capital M at the start of México is no reason to drop the é either; capitals are covered further down.

Why is the x in México said like a Spanish j?

Because the spelling is older than the sound. The Diccionario panhispánico de dudas gives the pronunciation as [méjiko] and marks [méksiko] as incorrect.

In this name, as in Oaxaca and Texas, the x keeps an older value: in earlier Spanish it wrote the sound that the letter j writes today. Wiktionary transcribes the modern name /ˈmexiko/ and the Early Modern Spanish one /ˈmeʃiko/, with an sh sound.

The name itself is older still. Wiktionary and Wikipedia trace it to Classical Nahuatl Mēxihco, a name for the Valley of Mexico, whose people were the Mexica. English kept the Spanish letters and reads them its own way. Dictionary.com gives the American pronunciation as /ˈmɛksɪˌkoʊ/, with ks for the x and the stress still on the first syllable.

Is Méjico, with a j, a spelling mistake?

No. The Diccionario panhispánico de dudas calls the forms with j correct as well. It says Méjico and mejicano were the usual spellings in Spain until not long ago. It still recommends the x, because the country itself writes it, as does most of Spanish America. Wiktionary labels Méjico uncommon and places it in Spain and Argentina.

English dictionaries can lag behind. The British entry on Dictionary.com comes from Collins English Dictionary. It gives the official name United Mexican States and the Spanish name Méjico, with no mention of México. For Spanish written for Mexican readers, México is the form to use: it is the spelling the academies recommend because Mexico uses it.

Which places share the name México?

Spanish uses México for the country, for its capital and for one of its states, and English gives each its own name. Wiktionary lists each of them among the senses of México, along with the Spanish names that tell them apart. Two more names reach beyond the border.

In English	In Spanish	What it is	Source
Mexico, officially the United Mexican States	México, Estados Unidos Mexicanos	the country	Collins; Wikipedia
Mexico City	Ciudad de México, the Distrito Federal until 2016	the capital	Wiktionary; The Guardian
State of Mexico, Mexico State	Estado de México	the state around the capital, with Toluca as its capital	Wiktionary; Dictionary.com
New Mexico	Nuevo México	a state of the United States	Wikipedia
Gulf of Mexico	Golfo de México	the arm of the Atlantic between Mexico, Cuba and the United States	Dictionary.com

The capital's Spanish name is recent. In January 2016 President Enrique Peña Nieto officially renamed the Federal District, which residents had called the DF for decades, Mexico City.

The Guardian's report on the change keeps the accents on people's names, Peña Nieto and Adrián Rueda. It writes the country and the city as Mexico. New Mexico keeps the Spanish form in its own symbols. Wikipedia lists "Así Es Nuevo México" among its state anthems, and before statehood the region was Santa Fe de Nuevo México.

Does MÉXICO in capital letters keep the accent?

In Spanish, yes. The Diccionario panhispánico de dudas, in its entry on capital letters, says writing in capitals does not exempt a word from the tilde: ÁFRICA, like África. Only acronyms, written wholly in capitals, never take one, so CIA and not CÍA.

FundéuRAE calls the belief that capitals go without accents widespread and wrong, and adds that the RAE never set such a rule. A Spanish heading, sign or form therefore reads MÉXICO, and the capital É is in the methods table above.

In English the question does not come up. MEXICO in an English headline is the English name in capitals, with nothing missing.

Should you write México in an English sentence?

Usually not: in English copy the Mexico accent mark comes off. The AP Stylebook keeps accent marks for people, "not places", in its Ask the Editors answer as CJR quotes it, so AP copy writes Mexico. The Guardian's style guide keeps accents on the names of people and places but leaves them off anglicised names, and its own reporting writes Mexico.

Keep México where the Spanish is the point: a Spanish name such as Ciudad de México, a postal address, a quotation, or a text in Spanish. Even in English, writing Mexico with accent mark intact is no error.

Wiktionary records México as an alternative English spelling of Mexico, with quotations from books published in 1968 and 2009. The dictionaries in the table still head their entries Mexico.