Skip to main content

HLA Census Workshop 2016: Census Geography

Guide created to accompany a workshop on Census data held at the Hawaii Library Association Annual Conference in 2016.


American FactFinder provides access to data about the United States, Puerto Rico and the Island Areas. The data in American FactFinder come from several censuses and surveys.

Standard Hierarchy of Census Geographic Entities diagram

Guide Creator


Angela Barr



Finding My Geography

magnifying glass and map image

If you don't know your census tract number, your block group number, or your block number, click on the link below for a step by step tutorial on how to find this information:

Finding my geographical information tutorial

Hawai`i Census Geography Reference Maps

Use these maps to locate and see the boundaries of enumeration units such as Census-designated places (CDPs), Census tracts, block groups, blocks, counties, Hawaiian home lands, zip code tabulation areas (ZCTAs), political subdivisions, and more.

Zip Code Tabulation Areas in Hawai`i