It seems like the Overpass API does not return a complete result set

gistfile1.md

I'm using Overpass Turbo: http://overpass-turbo.eu/

This is the query I'm using to collect all places that are Admin Level 8 within California:

[out:json];
area['admin_level'='4']['name'='California'];
(relation['admin_level'='8'](area););
out;

That doesn't return all items, though. For example, Pacifica is not included.