Map of San Marcos, California, United States

San Marcos is a city in California, United States, with a population of about 92,931. It lies at 33.1434°N, 117.1661°W, about 177 m above sea level. San Marcos is about 3,636 km (2,259 mi) west of Washington, D.C., the capital. The nearest city on our map is Escondido, 8 km to the east.

San Marcos at a glance

Where is San Marcos?

• Located in the Northern and Western hemispheres.
• Daylight ranges from about 9 h 57 min on the shortest day to 14 h 21 min on the longest day (around 21 December and 21 June).

Cities near San Marcos

• Escondido — 8 km east
• Vista — 10 km northwest
• Encinitas — 17 km southwest
• Carlsbad — 17 km west
• Oceanside — 21 km west
• Poway — 23 km southeast
• Santee — 38 km southeast
• Temecula — 39 km north
• El Cajon — 43 km southeast
• La Mesa — 44 km south

Largest cities in California

• Los Angeles — 3,820,914
• San Diego — 1,404,452
• San Jose — 997,368
• San Francisco — 827,526
• Fresno — 542,107
• Sacramento — 524,943
• Long Beach — 474,140
• Oakland — 419,267
• Bakersfield — 373,640
• Anaheim — 350,742

Largest cities in United States

• New York City — 8,804,190
• Los Angeles — 3,820,914
• Brooklyn — 2,736,074
• Chicago — 2,664,452
• Queens — 2,316,841
• Houston — 2,314,157
• Phoenix — 1,650,070
• Philadelphia — 1,573,916
• San Antonio — 1,526,656
• Manhattan — 1,487,536

Map of United States and all its cities →

Other places named San Marcos

• San Marcos — Sucre Department, Colombia
• San Marcos — Texas, United States
• San Marcos — San Salvador Department, El Salvador
• San Marcos — San Marcos, Guatemala

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.