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