Civic · 6 pages · 12 min

How a census counts and also misses

A census tries to count every person once, and some people are still missed or counted twice.

From the opening

A census is an attempt to list every person in a defined place, once, at a defined moment. It also misses people who are hidden, moving, or left off forms, and it can count others twice, so the published total is a count plus coverage error. The opening covers forms miss people inside households, mobility creates duplicates, and follow-up still leaves gaps.

The rest of the brief — the later sections and the reading notes — opens after Stripe confirms payment.

Inside

  • Forms miss people inside households
  • Mobility creates duplicates
  • Follow-up still leaves gaps
  • Coverage checks measure the miss
  • Where the idea stops applying
  • A distinction worth keeping

Sources

  • Census coverage error
  • Post-enumeration survey