1. US Census Bureau. American Community Survey: 2011–2015. Washington, DC: US Census Bureau; 2010. https://www.census.gov/programs-surveys/acs
2. Agency for Healthcare Research and Quality. 2014 national healthcare quality and disparities report chartbook on rural health care. AHRQ Pub. No. 15–0007–9-EF. Rockville, MD: Agency for Healthcare Research and Quality; 2015.
3. US Census Bureau. 2017 poverty thresholds. Washington, DC: US Census Bureau; 2017. https://www.census.gov/data/tables/time-series/demo/income-poverty/historical-poverty-thresholds.html
4. Pew Research Center. What unites and divides urban, suburban and rural communities. Washington, DC: Pew Research Center; 2018. https://www.pewsocialtrends.org/2018/05/22/demographic-and-economic-trends-in-urban-suburban-and-rural-communities
5. Eberhardt MS, Ingram DD, Makuc DM, Urban and rural health chartbook. Health, United States, 2001. Hyattsville, MD: National Center for Health Statistics, CDC; 2001.