Why may the Census estimate base for April 2020 differ slightly from the original 2020 enumeration?
Note
The April 2020 estimate base may differ from the 2020 Census count because the estimates program makes technical adjustments.
The estimates base can adjust the original census count for geographic changes, corrections, and other technical reasons. Comparing that base with later annual estimates maintains methodological continuity within a population series. The technical base should be tracked rather than silently replaced by a decennial count.
