Surname distribution maps for Dejong
Dejong in the 1881 Census
Dejong in the 21st Century
The maps, if available, show both where there are more people named Dejong and where they are most concentrated.
The darker the colour, the more people in that county are named Dejong.
The larger the dot, the greater the proportion of people in that county are named Dejong.
Hovering over the dots will give you the individual statistics for that county.