How Many Cities Named Fullerton Exist Worldwide?

There are two incorporated cities named Fullerton in the United States:

1. Fullerton, California – Orange County, population ~143,000 (2020). Home to Cal State Fullerton, historic downtown, and aerospace heritage.
2. Fullerton, Nebraska – Nance County, population ~1,200. Agricultural community in the central Platte Valley.

Beyond the U.S.

No other sovereign country has a city, town, or municipality officially named Fullerton. The name appears in:

• Unincorporated communities (e.g., Fullerton, Maryland; Fullerton, Pennsylvania).
• Neighborhoods or streets (e.g., Fullerton Avenue in Chicago, Fullerton, Singapore—a condo development).
• Institutions (Fullerton College, Fullerton Hotel).

So, strictly speaking: two cities worldwide bear the name Fullerton as an incorporated municipal entity.