Population (BEA midyear estimate)

Midyear (1 July) population by county, from the BEA Regional accounts (table CAINC1, line 2), beginning in 1969.

This is the denominator, published for that purpose. BEA carries it so its per-capita series can be reproduced, and it originates with the Census Bureau's population estimates rather than with BEA. Where we also publish the Census Population Estimates Program series directly, prefer that one as the population source; this one is here so that income ÷ population reproduces BEA's own per-capita figure exactly.

Revisions. BEA restates its regional estimates every year, and the restatement reaches back: a figure for 2019 is not the figure that was published in 2019. We do not overwrite what came before — each run stores its values under a new vintage, so a number cited last year stays retrievable after BEA revises it. This is the dataset the vintage model exists for.

Nominal dollars. Published as current dollars for the year in question, with no deflation and no inflation adjustment of ours. Comparing 1969 to 2024 directly compares two different dollars.