Postal codes in Mexico

Postal codes in Mexico are issued by Correos de México, the national postal service. They are of five digits and modelled on the United States Postal Service's ZIP Code system.

The first two digits identify a federal entity (or part thereof).

The 01–16 range refers to Mexico City with each corresponds to a borough (demarcación territorial) of the city.
The 20–99 range is used to identify the 31 states (estados). Code assignments to the states are done alphabetically by their names according to the old Spanish orthography, where the digraph ⟨ch⟩ was treated as a single letter and places after other words begin with ⟨c⟩.
Postal codes beginning with 00, 17, 18, 19 are not in use.

The later three digits identify municipalities (municipios) or other local settlements.

Range	Federal entity		Range	Federal entity		Range	Federal entity
01–16	Mexico City	CMX	20	Aguascalientes	AGU	21–22	Baja California	BCN
23	Baja California Sur	BCS	24	Campeche	CAM	25–27	Coahuila	COA
28	Colima	COL	29–30	Chiapas	CHP	31–33	Chihuahua	CHH
34–35	Durango	DUR	36–38	Guanajuato	GUA	39–41	Guerrero	GRO
42–43	Hidalgo	HID	44–49	Jalisco	JAL	50–57	México (state)	MEX
58–61	Michoacán	MIC	62	Morelos	MOR	63	Nayarit	NAY
64–67	Nuevo León	NLE	68–71	Oaxaca	OAX	72–75	Puebla	PUE
76	Querétaro	QUE	77	Quintana Roo	ROO	78–79	San Luis Potosí	SLP
80–82	Sinaloa	SIN	83–85	Sonora	SON	86	Tabasco	TAB
87–89	Tamaulipas	TAM	90	Tlaxcala	TLA	91–96	Veracruz	VER
97	Yucatán	YUC	98–99	Zacatecas	ZAC	—