San Diego metro city quiz
San Diego County. Name all 18 cities and towns and 39 communities on a blank map. Boundaries are especially helpful here, where dozens of cities sit side by side.
Largest cities in the San Diego area
| # | City | Population | Land area (sq mi) | People per sq mi |
|---|---|---|---|---|
| 1 | San Diego | 1,406,106 | 326.0 | 4,313 |
| 2 | Chula Vista | 275,533 | 49.8 | 5,538 |
| 3 | Oceanside | 170,483 | 41.3 | 4,131 |
| 4 | Escondido | 146,030 | 37.4 | 3,910 |
| 5 | Carlsbad | 112,260 | 37.8 | 2,969 |
| 6 | El Cajon | 101,755 | 14.5 | 7,013 |
| 7 | Vista | 98,274 | 19.0 | 5,180 |
| 8 | San Marcos | 94,908 | 24.6 | 3,863 |
| 9 | Encinitas | 60,736 | 19.1 | 3,187 |
| 10 | La Mesa | 59,914 | 9.1 | 6,591 |
Population: Census Bureau July 2025 estimates.
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Questions
How many cities are in the San Diego metro area?
San Diego County. Its 1 counties hold 18 incorporated cities and towns (18 cities) and 39 unincorporated communities, for 57 places in this quiz.
Which counties are in the San Diego quiz?
San Diego County. The list follows the federal metropolitan area definition.
What is the largest city in the San Diego metro?
San Diego, CA, with 1,406,106 people (July 2025 estimate). The next largest are Chula Vista, Oceanside, and Escondido.
How does the metro quiz work?
Type a city, town or community and press Enter. If it is in the quiz, its real boundary fills in green on a blank street map that has highways, parks and water but no place names. A name shared by several places, like Springfield, fills in all of them at once. Hover a found city to see its population, land area and density, ranked within its state. Only places inside the metro’s counties count.