Hello,
I have limited experience with the ACS data. I am working with 2020 ACS data in Los Angeles County. I am comparing People with Disabilities vs Age & Sex (and other tables that have the same population total). The total population is different with People with Disabilities vs Age & Sex population. The Age & Sex population is equal to other tables i am using well.
I am using the following tables:
ACSDT5Y2020.C18108-Data - C18108 Age by Number of Disabilities
Estimate Los Angeles County, California!!
Total: 9,970,085
Margin of Error: +/- 2117
ACSST5Y2020.S0101-Data - S0101 AGE AND SEX
Los Angeles County, California!! California
Estimate Los Angeles County
Total population: 10,040,682
Margin of Error: *****
ACSDT5Y2020.B03002-Data - B03002 HISPANIC OR LATINO ORIGIN BY RACE
Los Angeles County, California!
Total: 10,040,682
Is there any reason the total population for Peoples with Disabilities is different from other tables (B03002 & S0101)?
Disability tables use the Civilian Noninstitutionalized Population universe. So that difference is the number of people in institutional GQs or active duty military.
Just to add a note about PUMS data. With the PUMS data the individual disability variables like DEYE are defined for the total population. If you want to "recreate" the detail tables on data.census.gov from PUMS data you need to look at the MIL PUMS variable and the TYPEHUGQ variable.