I have written several articles on the demographics of the DC region. Along with series of articles on the demographics of Prince George’s County and on demographic changes in the region over the past fifty years, I’ve written several on-off articles on demographics in the region:

I hope to eventually follow up on the voter registration article with a follow-up analysis of voter turnout in different sorts of elections. I’m particularly interested in how different schedules for municipal elections (either synchronized with or separate from state and county elections) affect voter turnout.


Prince George’s County’s Demographics

My map of Census tracts in the DC region with median incomes above twice the national median income, color-coded by majority race.

My home county, Prince George’s County, Maryland, is a significant demographic outlier, as the suburban county in the US with the largest Black population and the highest-income majority-Black county in the country. I have written several articles for Greater Greater Washington analyzing this diversity, the more recent of which is based on my discovery that the county has the majority of the high-income majority-Black Census tracts in the country.

In addition, in October 2018, I wrote an article—”Prince George’s sends fewer students to Maryland’s flagship university than other counties. Why?“—discussing the surprising fact that relatively few Prince George’s County students attend the University of Maryland, College Park.


Historical Demographics: 1970-Present

My map of the racial distribution of population in the DC region each decade from 1970 to present.

Between July 2019 and January 2020, I wrote a series of four articles for the D.C. Policy Center with maps of population density and race, income, and education demographics in the DC area from 1970 to present, based on data from the National Historical GIS Database:

I hope to eventually extend this analysis back to 1860 or earlier by hand-entering data from Census reports into minor civil division geometries derived from old maps. However, this will be a major undertaking and I have no estimate of when I will be able to complete it.