The city of Napa grew by 6 percent between 2000 and 2010: According to population figures released today by the U.S. Census Bureau and the California Department of Finance, the city's head count increased from 72,585 to 76,915 over the 10-year period.
Napa County's population has grown by 9.8 percent since the 2010 census, when there were 124,279 residents: Last year, the county was 136,484 strong, according to today's report.
The county's fastest-growing city was American Canyon, where the population jumped by 99 percent, from 9,774 in 2000 to 19,454 in 2010.
Upvalley cities lost population over the decade: Yountville's latest numbers are 11 percent lower than in the last census, St. Helena's 2.3 percent lower and Calistoga's .07 percent lower.
That translates to 364 fewer Yountville residents, 136 fewer St. Helenans and 35 fewer Calistogans.
Statewide, Napa County was the 34th most-populous county in both 2010 and 2011.
The data — divided by census blocks, voting districts, cities, counties and school districts — includes information on population, race, ethnicity and voting age.
In December, the Bureau released state population information used to determine the redistricting of state representation in national government.
In 2010, eight states gained congressional seats, but for the first time since 1920 California wasn't one of them — due to inordinately slow population growth over the last decade. California's population total was 37,253,956 residents in 2010, an almost 10 percent population growth since 2000, and right on par with the country's 9.7 percent population increase. So, California retains its 53 seats in the House of Representatives.
This is just a quick look at the results released this afternoon; we'll have further analysis on Napa Patch throughout the week.