10.4 M
Foreign-born
27% (1st in the U.S.)
5.6 M
Naturalized citizens
4.8 M
Non-citizen residents
≈ 150,000
Annual new immigrants
2023
≈ 165,000
Annual naturalizations
2023
Mexico
Top origin
≈ 38% of immigrants
Philippines
2nd origin
China
3rd origin
≈ 1.8 M
Undocumented residents
Est.
44%
Bilingual households
Historical data
Long-run evolution of the key indicators, so you can see the trend — not just today's snapshot.
Foreign-born share
1900–202327%▲ 9%
Share of residents born outside the U.S.
Data table
| Foreign-born | 10.4 M | 27% (1st in the U.S.) |
| Naturalized citizens | 5.6 M | |
| Non-citizen residents | 4.8 M | |
| Annual new immigrants | ≈ 150,000 | 2023 |
| Annual naturalizations | ≈ 165,000 | 2023 |
| Top origin | Mexico | ≈ 38% of immigrants |
| 2nd origin | Philippines | |
| 3rd origin | China | |
| Undocumented residents | ≈ 1.8 M | Est. |
| Bilingual households | 44% |
Compared to the United States
Coming soon
Side-by-side comparison of California vs. the U.S. average.
Compared to other states
Coming soon
How this indicator ranks against every other state.
National ranking
Coming soon
The national ranking for this metric will appear here.
Overview
This page tracks migration flows for California, part of our immigration data. Foreign-born population, origins and migration flows. As real data is published, you'll find key indicators, historical trends, a full data table, comparisons with the United States and other states, and the corresponding national ranking here.