Analyst Resource Center (ARC)

Census Bureau American Community Survey 1-Year Data (2011-2017) WDC

DP02, DP03, DP04, or DP05. A full list of variables and groups can be found here

STATE, COUNTY, US to group or specific GEO_ID. A full list of areas can be found here

This connects to the US Census Bureau API, please review the Census documentation