Westley, CA-Peer Comparisons by Rank and Percentile. The table below compares Westley to the other 1,523 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2015 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.