Just after noon today, the US Census Bureau released detailed census data about California. This is the data state and local officials will use to redraw their political districts over the course of the year. Of course, it’s also just interesting!

As of April 1 of last year, 37,253,956 people lived in California, the country’s most populous state. That’s an increase of 10 percent since 2000.

Among the less shocking results, the census found that the state’s most populous county is Los Angeles, weighing in at 9,818,605 people, which is 3.1 percent higher than its count from ten years ago. Numbers two through five, and the only others to top 2 million, are San Diego, Orange, Riverside, and San Bernardino, respectively.

More shocking are the growth rates in Riverside and Placer Counties, which have 41.7 and 40.3 percent more residents than they did in 2000. Rounding out the top five in this category, and all in the low- to mid-twenty percent range, are Kern, Imperial, and Madera, with plenty of others following close behind. Most of the fastest growing counties are those in the inland valley regions.

The US Census press release is here, a few custom spreadsheets are here, the map of total population by county is here, the map of population change by county is here, a fun little interactive map is here, and the data is available in different formats here and here (don’t use this last one unless you really know what you’re doing). Finally, the California Department of Finance has prepared a number of interesting and useful tables and maps that you can find here.