Mexico
Northern America · 21 specs
Direct Answer
Mexico (MX / MEX / 484) operates on a 127 V / 60 Hz electrical grid using NEMA 1-15 (Type A) and NEMA 5-15 (Type B) sockets. Traffic drives on the right (RHT). The official currency is the Mexican Peso (MXN, $), country calling code is +52, emergency dispatch is 911, and the metric system (SI) is mandatory for trade and road speed limits.
Source: Secretaría de Economía (NOM) / CFE / ISO 3166-1 / Correos de México · Last reviewed Aug 28, 2026
Specs
| Official English Name | United Mexican States ISO 3166-1 |
| Local Endonym | Estados Unidos Mexicanos (México) |
| ISO 3166-1 Alpha-2 | MX |
| ISO 3166-1 Alpha-3 | MEX |
| ISO 3166-1 Numeric / UN M49 | 484 UN M49 (Code 419 / 021) |
| Country Calling Code | +52 IFT (ITU-T E.164) |
| International Exit Code (IDD) | 00 dial prefix for international calls |
| Internet ccTLD | .mx NIC México |
| Vehicle Registration Code | MEX UNECE 1968 Convention |
| National Currency (ISO 4217) | Mexican Peso (MXN, $) 100 Centavos (¢) |
| Mains Electricity Standard | 127 V (±10%), 60 Hz NOM-001-SEDE / CFE Standard |
| Electrical Plug Sockets | Type A (NEMA 1-15) & Type B (NEMA 5-15) 15 A / 125 V rating |
| Road Traffic Driving Side | Right-Hand Traffic (RHT / LHD) Reglamento de Tránsito |
| Primary Measurement System | Metric (SI) NOM-008-SCFI-2002 Standard |
| Standard Office Paper Format | Carta (Letter / 215.9 × 279.4 mm) & Oficio NMX-N-001-SCFI |
| Standard Business Envelope | Sobre Carta / #10 Commercial |
| Consolidated Emergency Number | 911 SESNSP Unified Dispatch |
| Postal Code Regex / Format | 5 Digits (NNNNN, e.g. 06000 CDMX) Correos de México (SEPOMEX) |
| Primary Time Zones | UTC-5 to UTC-8 (4 zones; Southeast, Central, Pacific, NW) National standard |
| Date Format Standard | DD/MM/YYYY (e.g., 23/08/2026) Mexican Standard |
| Number Radix / Separators | $1,234.56 (Comma thousands, Dot decimal) Commercial Standard |
National 2022 Abolition of Daylight Saving Time
On October 30, 2022, the Mexican Congress officially enacted the Ley de los Husos Horarios, abolishing nationwide Daylight Saving Time (Horario de Verano) across all 31 federal states.
- Border Zone Exception: Central and southern Mexico remain permanently on standard time year-round. Only 33 northern border municipalities in Baja California, Chihuahua, Coahuila, Nuevo León, and Tamaulipas continue observing DST to maintain cross-border trade synchronization with the United States.
Electrical Grid, Voltage & Plug Compatibility
- Nominal Grid Parameters: Operates on a single-phase standard of 127 V (±10%), 60 Hz.
- Plug & Socket Hardware: Type A (NEMA 1-15) & Type B (NEMA 5-15). Uses North American style Type A (2-blade ungrounded) and Type B (3-prong grounded) receptacles.
- International Traveler Guidance: Devices operating on 100–240 V (smartphones, laptops) require only a mechanical pin adapter. Single-voltage appliances from differing voltage regions require a certified step-down/step-up power transformer.
Telecommunications, Dialing & Emergency Dispatch
- International Dialing: The country calling code is +52. Outbound international calls from within the country require dial prefix 00 followed by the destination country code.
- Emergency Dispatch: Consolidated emergency services are reached at 911. Calls are automatically routed to local public safety answering points with emergency vehicle dispatch.
Transportation, Driving Standards & Road Regulations
- Traffic Flow: Road traffic drives on the right (RHT) with Left-Hand Drive (LHD) vehicles.
- Standard Speed Limits: General regulatory speed limits default to 50 km/h (31 mph) in built-up urban and residential zones, 80–100 km/h (50–62 mph) on undivided rural roads, and 110–130 km/h (68–81 mph) on grade-separated divided motorways/expressways (unless lower local limits are posted).
- Safety Requirements: Mandatory seatbelt compliance for all occupants, zero-distraction handheld mobile phone bans while driving, and mandatory in-vehicle warning triangles.
Commerce, Currency & Document Standards
- Official Currency: Legal tender is the Mexican Peso (MXN, $).
- Document & Paper Standards: Standard office printing, official government gazettes, and legal filings strictly utilize Carta (Letter / 215.9 × 279.4 mm) & Oficio. Standard business correspondence pairs with standard business envelopes.
- National Time Zone: Regulated under Standard time.
Postal Addressing & Administrative Divisions
- Postal Architecture: Postal delivery utilizes 5 Digits (NNNNN, e.g. 06000 CDMX).
- Standard Address Format: Structured in standardized hierarchy: Recipient Name → Street Address / Building Unit → Postal Code + City/Town → Province/State → United Mexican States.