This overview shows the number of person records which have been transcribed from the three censuses for each parish (1865) or municipality (1875, 1900 and 1910).
| General legend: |
| Number |
= |
The number of persons in the census year. |
| ÷ |
= |
This parish or municipality did not exist at the time. |
| Legend for the 1965, 1900 and 1910 censuses: |
 |
= |
Censuses transcribed by the NHDC. |
 |
= |
Censuses transcribed by the Digital Archive (DA). |
| *Kristiania 1900 og 1910 has been transcribed by the NHDC and Digital Archive |
| Legend for the 1875 census only: |
| (Number) |
= |
Numbers in parenthesis represent a representative 2 % sample of households. |
| The 1875 census has been transcribed by the NHDC except for the following municipalities: |
| |