For defining PUMAs, the best thing to do is to work with your State Data Center. https://www.census.gov/sdc/network.html
Each PUMA needs to have a minimum of 100,000 population, so small counties will never have their own PUMA. https://www.census.gov/geo/reference/puma.html
The next round of PUMA definition will not likely occur until just after the 2020 Decennial Census.
If you figure out the PUMA (or PUMAs) that best match your geography, contact me, and we will see if we have sufficient staff time to pull these out especially for you.
Thank you very much Elaine,
Is there any way for us to make the PUMA geography match the boundary for San Luis Obispo County?
San Luis Obispo Council of Governments
In case you haven’t seen these, we posted new profile sheets that use the 2006-2008 ACS and the 2011-2013 ACS Public Use Microdata Sample.
In these profiles, Baby Boomers are defined as those born between 1946 and 1964, and Millennials are defined as those born between 1983 and 2000.
For the 2006-2008 ACS, many of the Millennials were not yet of working age.
The geography is limited only to those Counties for which PUMA geography has matching boundaries.
I have seen some recent forecasts about declining gasoline prices, so we will see how this impacts the mode to work and auto ownership for younger workers in the near future.
FHWA Office of Planning
206-220-4460 (in Seattle)