I see that in the ACS PUMS 5-year data, the countyfips variable is available for some of the counties in some of the states. Are these, when weighted, applicable to the county? In previous questions, the answer appears to be yes:
However, on the Census and IPUMS websites, it still says that PUMAs are the lowest level of geography available:
“The smallest identifiable geographic unit is the PUMA, containing at least 100,000 persons. PUMAs do not cross state boundaries.” https://usa.ipums.org/usa/sampdesc.shtml#us2014c
So which one is correct? Is PUMA or county the lowest level of geography that can be tabulated using the PUMS data? And for what years/samples does this apply?
If it supposed to be applicable to the county level, I believe I’ve found an error when using the perwt variable for Canyon County, Idaho (county fips 027) in the 2014 5 year PUMS for Idaho (state fips 16). I’m finding that I get the correct estimate for national-level and state-level for Idaho, but not for Canyon County. The population estimate I get for Canyon County is 79,070 but it should be closer to 195,353 (based on ACS Table DP05 for 2010-14).
Thank you in advance for your help.