Omnummeren means to renumber.
In the past, addresses often changed from one census/population register to the next. The houses would be omgenummerd; renumbered. This can make it difficult to find the modern locations of historical addresses. See tips for finding the address where your ancestors lived for some ideas.
Some archives have omnummerlijsten (renumber lists) or omnummerregisters (renumber registers), either created in the past and part of their records, or created in the modern period as an aid to researchers. For example, the Amsterdam City Archives publishes omnummerregisters for Amsterdam addresses.
Changed house number in Ezinge, Groningen. Photo by author
About Yvette Hoitink
Congratulation on your appointment. My family is from Nijmegan. Do you know of an geneology association the city of Nijmegan. That I can contact? Thank you.
An example: I grew up on a dike that belonged to the village named Maasdam, but the dike was surrounded on all sides by farmland belonging to the village of Strijen. At the southern end of the dike, belonging to Strijen, numbering started from 1, while at the largest, northern part of the dike, belong to Maasdam, the numbering started from 1, too. So, when the dike was incorporated in Strijen, the northern part was renumbered and my parent’s house number changed from 131 to 51, but the dike’s name stayed the same.