How this map is made
Each dot is one person counted in the 2020 Census. The Census reports how many people of each group live in every census block (often a single city block). We place each person's dot at a random point inside their block, so dots show where people live at the block level, not at real addresses.
Groups follow the Census question on Hispanic or Latino origin and race. "Hispanic or Latino" includes people of any race; every other group is non-Hispanic. "Multiracial" means two or more races. "Native American/Other" combines American Indian and Alaska Native, Native Hawaiian and Other Pacific Islander, and Some Other Race (the newer estimates have no "Some other race" category, so there it covers only the first two).
Where dots overlap, the color is a blend of the groups in that spot, and denser areas appear more solid.
The dots show the 2020 Census; the figures in the table come from the Census Bureau's population estimates, which update each county's population every year from births, deaths, and migration. Change is measured from the estimates' April 2020 starting point, which matches the census except that "Some other race" is assigned to a specific race, so small differences from the 2020 counts are expected. Estimates are not published for individual blocks, so the dots can't be updated past 2020.