Considering the difficulties, the Census Bureau does a remarkably good
job at counting people. There are two current techniques for evaluati
ng or adjusting the census: (a) demographic analysis uses administrati
ve records to make independent population estimates which can be compa
red to census counts; (b) data from an independent sample survey can b
e used to estimate population coverage. If there is a large undercount
, these techniques may be accurate enough for adjustment with a small
undercount it is unlikely that current adjustment methodologies can im
prove on the census; instead, adjustment could easily degrade the accu
racy of the data. This article reviews plans for Census 2000, includin
g proposals for adjustment in the light of past experience.