According to English Wikipedia, The Mandalorian was filmed in Los Angeles, California. Much of the production took place at Manhattan Beach Studios, with additional location filming in the Los Angeles area.
The production used a mixture of physical sets, practical effects, and digital environments rather than relying entirely on conventional on-location shooting. Industrial Light & Magic’s StageCraft system displayed real-time virtual backgrounds on a large LED video wall, allowing performers and filmmakers to work inside changing Star Wars environments.
The city answer can be confusing because the show depicts planets across the galaxy, including deserts, forests, and icy landscapes. Those settings are fictional or digitally constructed; they do not mean the production filmed in places such as London, Vancouver, or Atlanta. Los Angeles identifies the real-world production base.