Compared to the other cities in California and cities in all other U.S. states, how safe is Vista, CA? From the gauges displayed above, you will notice that Vista, CA has been ranked safer than 46% of other cities in the state of California. In addition, Vista, CA is safer than 36% of cities in the entire United States. To achieve these results, all California and United States cities were analyzed to determine how many locations had a lower crime rate than Vista, CA. By studying this data, it was possible to determine that Vista, CA is below average in safety when compared with other United States cities.