The county grew by 14% between 2000 and 2010, to 543,376 people.
During the 1970s, the county grew, thanks to a rapid expansion of oil production.
The county grew rapidly through the first years of the 1870s.
The 20 counties around Yellowstone have grown in population by more than 11 percent over the past six years.
It was a little place which had grown up as my county grows.
The new courthouse was finished in 1712 but 60 years later the county had out grown it.
By 1820 the county had grown to 387,914 in total population.
The county grew slowly, reaching a population of just 281 by 1870.
But over all, the county - like the rest of the state - is growing again after the long California recession.
Need for a second courthouse became apparent as the county grew in population.