children in poverty by race at the county level

You might be looking for small area income and poverty estimates www.census.gov/.../saipe.html

Hi Tim. Thanks for the suggestion. I don't think SAIPE has race data, does it? At least the interactive tool doesn't show race. www.census.gov/.../

You’re right! 

It would be great if it did have race.

One thing about SAIPE estimates they use an SAE (small area estimation) model to computes the SAIPE poverty variable The "small areas" are county and school district. For the SAIPE estimates the Census uses ACS data in combination with administrative data https://www.census.gov/programs-surveys/saipe/guidance/model-input-data.html  The administrate data includes IRS data SNAP benefit data, and Current Population Survey (CPS) data  Details and public use  files are here https://www.census.gov/data/datasets/time-series/demo/saipe/model-tables.html and  https://www.census.gov/programs-surveys/saipe/technical-documentation/methodology.html  The details of the county model are here https://www.census.gov/programs-surveys/saipe/technical-documentation/methodology/counties-states/county-level.html  By contrast the ACS "B" detail tables are "direct estimates."

In any case, the SAIPE, estimates may not be comparable to the ACS tables variable Above/Below Poverty Level, which I believe, relies on items from the ACS form alone. (Please correct me if needed).  There is another recent thread about how the ACS calculates their poverty.  See that for more details.

Dave Dorer

One thing about SAIPE estimates they use an SAE (small area estimation) model to computes the SAIPE poverty variable The "small areas" are county and school district. For the SAIPE estimates the Census uses ACS data in combination with administrative data https://www.census.gov/programs-surveys/saipe/guidance/model-input-data.html  The administrate data includes IRS data SNAP benefit data, and Current Population Survey (CPS) data  Details and public use  files are here https://www.census.gov/data/datasets/time-series/demo/saipe/model-tables.html and  https://www.census.gov/programs-surveys/saipe/technical-documentation/methodology.html  The details of the county model are here https://www.census.gov/programs-surveys/saipe/technical-documentation/methodology/counties-states/county-level.html  By contrast the ACS "B" detail tables are "direct estimates."

In any case, the SAIPE, estimates may not be comparable to the ACS tables variable Above/Below Poverty Level, which I believe, relies on items from the ACS form alone. (Please correct me if needed).  There is another recent thread about how the ACS calculates their poverty.  See that for more details.

Dave Dorer

Yup, sounds right.